Intraplex VF-25 Four-Port PCM E&M Voice Module

Installation and Operation Manual Intraplex VF-25 Four-Port PCM E&M Voice Module VF-25 Voice Frequency Module MA-305C, MA-306C, MA-308C, MA-309C, & MA-310 Module Adapters Version 7.1

Publication Information 2014 GatesAir, Inc.. Proprietary and Confidential. GatesAir considers this document and its contents to be proprietary and confidential. Except for making a reasonable number of copies for your own internal use, you may not reproduce this publication, or any part thereof, in any form, by any method, for any purpose, or in any language other than English without the written consent of GatesAir. All others uses are illegal. This publication is designed to assist in the use of the product as it exists on the date of publication of this manual, and may not reflect the product at the current time or an unknown time in the future. This publication does not in any way warrant description accuracy or guarantee the use for the product to which it refers. GatesAir reserves the right, without notice to make such changes in equipment, design, specifications, components, or documentation as progress may warrant to improve the performance of the product. GatesAir reserves the right, without notice to make such changes in equipment, design, specifications, components, or documentation as progress may warrant to improve the performance of the product. Trademarks AudioLink PLUS, HD Link, IntraGuide, Intraplex, NetXpress, NetXpress LX, STL PLUS, SynchroCast, and SynchroCast3 are trademarks of GatesAir Corporation. Other trademarks are the property of their respective owners. Customer Service Contact Information www.gatesair.com GatesAir 3200 Wismann Lane Quincy, Il 62305 USA For Technical Support including Service, Training, Repair and Service Parts: www.gatesair.com/services/technical-support.aspx Americas: 24/7 Technical Support +1 217 222 8200 Email tsupport@gatesair.com Europe, Middle East and Africa: 24/7 Technical Support +1 217 222 8200 Email tsupport.europe@gatesair.com Asia: 24/7 Technical Support +1 217 222 8200 Email tsupport.asia@gatesair.com

Version Date Revision History Section Pages Editor 7 3/31/09 Put manual into new format. Updated appendix for new module adapters, dividing appendix into current and discontinued MAs. All All LD 7.1 11/03/09 Changed EB Lead to SG Lead in two occurrences. 2.2 2-1 LD

No header here Table of Contents Section 1 Introduction... 1-1 Section 2 Functional Description & Setup... 2-1 2.1 Transmit Side... 2-1 2.2 Receive Side... 2-1 2.3 E&M Signaling... 2-3 2.4 Alerts/Alarms... 2-3 2.5 Loopbacks... 2-3 2.6 Drop/Insert Operation... 2-4 2.7 Controls and Indicators... 2-4 2.8 Remote Control Interface... 2-7 2.8.1 P Codes...2-8 2.8.2 S Codes... 2-12 Section 3 Installation... 3-1 3.1 Inspection... 3-1 3.2 Configuration... 3-1 3.3 Mounting... 3-2 Section 4 Testing & Troubleshooting... 4-1 4.1 Local versus Remote Loopback... 4-1 4.2 VF-25 Loopback Setup Procedure... 4-1 Section 5 Specifications... 5-1 5.1 Detailed Specifications... 5-1 5.2 Notice of FCC Compliance... 5-2 Appendix A Module Adapters for VF-25 Voice Module... A-1 A.1 Current Module Adapters... A-1 A.1.1 MA-305 Four-wire, 50-pin Connector... A-1 A.1.2 MA-305C Four-Wire, 50-pin Connector... A-2 A.1.3 MA-306C Four-Wire, RJ-45 Connector... A-4 A.1.4 MA-308C Four-Wire, RJ-45 Connector... A-7 A.1.5 MA-309C Two-Wire, 50-pin Connector... A-11 A.1.6 MA-310 Two-Wire, RJ-45 Connector... A-16 A.2 Discontinued Module Adapters... A-22 A.2.1 MA-305B Four-wire, 50-pin Connector... A-22 A.2.2 MA-306 Four-Wire, RJ-45 Connector... A-23 A.2.3 MA-308 Four-Wire, RJ-45 Connector... A-26 GatesAir, Inc. i

Intraplex VF-25 Voice Module Table of Contents A.2.4 MA-308B Four-Wire, RJ-45 Connector... A-29 A.2.5 MA-309 Two-Wire, 50-pin Connector... A-34 Figures Figure 2-1. VF-25 Voice Module, Block Diagram... 2-2 Figure 2-2. E&M Signaling Types... 2-3 Figure 2-3. Three-Site System Using Drop/Insert... 2-4 Figure 2-4. VF-25 Voice Module, Front View... 2-4 Figure 2-5. VF-25 Voice Module, Top View... 2-5 Figure 2-6. Attenuation Level Controls (P3 P10)... 2-11 Figure 4-1: VF-25 Loopbacks... 4-1 Figure A-1. MA-305 Jumper Settings and Face Plate... A-2 Figure A-2. MA-305C Jumper Settings and Face Plate... A-3 Figure A-3. MA-306 Jumpers and Face Plate... A-4 Figure A-4. MA-306C Pin Assignments... A-6 Figure A-5. MA-308C Jumpers and Face Plate... A-8 Figure A-6. MA-308C Pin Assignments... A-9 Figure A-7. MA-309C Jumpers and Face Plate... A-11 Figure A-8. MA-309C Jumper Settings for Signaling Type Selection... A-12 Figure A-9. MA-309C Jumper Settings for Attenuation Control... A-14 Figure A-10. MA-310 Jumpers and Face Plate... A-16 Figure A-11. MA-310 Jumper Settings for Signaling Type Selection... A-17 Figure A-12. MA-310 Pin Assignments... A-18 Figure A-13. MA-310 Jumper Settings for Attenuation Control... A-19 Figure A-14. MA-305B Jumper Settings and Face Plate... A-22 Figure A-15. MA-306 Jumpers and Face Plate... A-23 Figure A-16. MA-306 Pin Assignments... A-25 Figure A-17. MA-308 Jumpers and Face Plate... A-26 Figure A-18. MA-308 Pin Assignments... A-28 Figure A-19. MA-308B Jumpers and Face Plate... A-30 Figure A-20. MA-308B Pin Assignments... A-32 Figure A-21. MA-309 Jumpers and Face Plate... A-34 Figure A-22. MA-309 Jumper Settings for Signaling Type Selection... A-35 Figure A-23. MA-309 Jumper Settings for Attenuation Control... A-37 Tables Table 2-1. Configuration Switches... 2-6 Table 2-2. Active Channel Selection SW2, Positions 2 & 3... 2-6 Table 2-3. Input/Output Level Jumper Settings... 2-6 Table 2-4. Starting Time Slot Selection SW1, Positions 1-5... 2-7 Table 2-5. Card Address Setting SW3... 2-8 Table 2-6. Remote Configuration Settings (P Codes)... 2-9 Table 2-7. Starting Time Slot Selection by Remote Access... 2-10 Table 2-8. Suggested P Codes to Achieve Desired db Gain... 2-12 ii GatesAir, Inc.

Table of Contents Intraplex VF-25 Voice Module Table 2-9. Remote Status Messages (S Codes)... 2-13 Table 3.1 Sample VF-25 Response To A CONFIG? Query... 3-2 Table A-1. Module Adapters for VF-25 Module... A-1 Table A-2. MA-305 Pin Assignments... A-1 Table A-3. MA-305C Pin Assignments... A-3 Table A-4. MA-306C Channel 1 Jumper Settings... A-5 Table A-5. MA-306C Channel 2 Jumper Settings... A-5 Table A-6. MA-306C Channel 3 Jumper Settings... A-5 Table A-7. MA-306C Channel 4 Jumper Settings... A-6 Table A-8. MA-306C Pin Assignments... A-6 Table A-9. MA-308C Alternate Jumper Settings... A-8 Table A-10. MA-308C Alternate Jumper Settings... A-9 Table A-11. MA-308C Pin Assignments... A-10 Table A-12. MA-308C Attenuator Switch Settings... A-10 Table A-13. Selectable Attenuation Control for Nominal Input Level of 0dBm... A-13 Table A-14. Selectable Attenuation Control for Nominal Input Levels of -16 & 0 dbm... A-13 Table A-15. MA-309C Pin Assignments... A-13 Table A-16. Selectable Attenuation Control for Nominal Input Level of 0dBm... A-14 Table A-17. Selectable Attenuation Control for Nominal Input Levels of -16 & 0 dbm... A-15 Table A-18. MA-309C Technical Specifications... A-15 Table A-19. Selectable Attenuation Control for Nominal Input Level of 0dBm... A-18 Table A-20. Selectable Attenuation Control for Nominal Input Levels of 16 & 0 dbm... A-18 Table A-21. MA-310 Pin Assignments... A-19 Table A-22. Selectable Attenuation Control for Nominal Input Level of 0dBm... A-20 Table A-23. Selectable Attenuation Control for Nominal Input Levels of -16 dbm & 0 dbm... A-20 Table A-24. MA-310 Technical Specifications... A-21 Table A-25. MA-305B Pin Assignments... A-22 Table A-26. MA-306 Channel 1 Jumper Settings... A-24 Table A-27. MA-306 Channel 2 Jumper Settings... A-24 Table A-28. MA-306 Channel 3 Jumper Settings... A-24 Table A-29. MA-306 Channel 4 Jumper Settings... A-25 Table A-30. MA-306 Pin Assignments... A-25 Table A-31. MA-308 Alternate Jumper Settings... A-27 Table A-32. MA-308 Alternate Jumper Settings... A-27 Table A-33. MA-308 Pin Assignments... A-28 Table A-34. MA-308 Switch Settings... A-29 Table A-35. MA-308B Channel 1 Alternate Jumper Settings... A-31 Table A-36. MA-308B Channel 2 Alternate Jumper Settings... A-31 Table A-37. MA-308B Channel 3 Alternate Jumper Settings... A-31 Table A-38. MA-308B Channel 5 Alternate Jumper Settings... A-32 Table A-39. MA-308B Pin Assignments... A-33 Table A-40. MA-308B Attenuator Switch Settings... A-33 Table A-41. Selectable Attenuation Control for Nominal Input Level of 0dBm... A-36 Table A-42. Selectable Attenuation Control for Nominal Input Levels of 16 dbm & 0 dbm... A-36 Table A-43. MA-309 Pin Assignments... A-36 Table A-44. Selectable Attenuation Control for Nominal Input Level of 0dBm... A-38 GatesAir, Inc. iii

Intraplex VF-25 Voice Module Table of Contents Table A-45. Selectable Attenuation Control for Nominal Input Levels of -16 dbm & 0 dbm... A-38 Table A-46. MA-309 Technical Specifications... A-39 iv GatesAir, Inc.

No header here Section 1 Introduction This manual describes the setup and installation procedures for the Intraplex VF-25 Voice Frequency Module. Experienced users may refer directly to the Section 2 tables for configuration data. Your Intraplex multiplexer operation manual contains additional information about this system. The VF-25 four-port voice frequency module is designed to use in the Intraplex terminal and drop/insert multiplexers and other Intraplex communications products. The voice interface is full duplex, two-wire or four-wire E&M with PCM coding, allowing four voice channels to be carried in four 64 kbps time slots on T1 and other digital communications facilities. Each VF-25 module provides high quality voice characteristics compatible with AT&T Pub. 43801 and supports E & M signaling Types I, II, III, and V. It has extended-range input and output signal level adjustments to facilitate interfaces in most two-wire or four-wire applications. VF-25 voice module features include One to four independent channels may be active simultaneously. Remote control configuration and status reporting. Selectable signaling format (Type I, II, III, or V). Selectable transmit/receive direction for use in drop/insert systems. Input/output attenuation adjustment. GatesAir, Inc. 1-1

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No header here Section 2 Functional Description & Setup This section s descriptions refer to one channel; each of the four channels on this module operates identically. Figure 2-1 shows a simplified block diagram of the VF-25 module. 2.1 Transmit Side Voice input goes through the module adapter at the rear of the shelf. The input signal goes to a balanced input transformer. The transformer output goes to an amplifier stage and then passes through an electronic level control, which allows the input level to be adjusted up or down from the nominal setting in <0.5 db increments. The normal factory-set input level is 0 dbm, referenced to 600 ohms, and clipping begins at input level of +3.0 dbm. Jumpers on the module allow the nominal input level to be set to -16 dbm. The control output then passes to the PCM CODEC, which converts it to an eight-bit digital signal using µ-law coding. The M-Lead Detector responds to an IDLE or BUSY signal from the external device. For Types I, II, and III signaling, a level of -48 volts at the M Lead equals BUSY, ground equals IDLE. For Type V signaling, ground at the M Lead equals BUSY, open equals IDLE. The M-Lead input impedance is greater than 20K Ohms. The Field Programmable Gate Array (FPGA) multiplexes the M-Lead signal together with the eight-bit output of the PCM encoder and places the resulting bitstream into the user-selectable time slot on the backplane for transmission in the desired direction. Each channel occupies one time slot; you select the time slot for Channel 1, and each additional active channel occupies the next sequential time slot. 2.2 Receive Side The FPGA gets the input signal from the appropriate time slot on the backplane and demultiplexes it. The E-Lead signal goes to the E Lead driver. When active in Type I, III, and V signaling modes, ground equals BUSY; open equals IDLE. In Type II signaling, the E-Lead and SG-Lead are both used. When signaling is active, the E-Lead and SG-Lead are tied together through the E-Lead relay. GatesAir, Inc. 2-1

Module Adapter M Input SB E Output SG VF-25 Module Intraplex VF-25 Voice Module 2 Functional Description & Setup TDM Bus Serial Control Bus Drivers & Receivers FPGA Local Loopback PCM CODEC 1 2 3 4 5 6 TERM TS1 TS0 SIG OFF REMOTE SERVICE 1 2 3 4 5 SELECT TIME SLOT 6 AUX (LOCAL LOOPBACK) 1 2 3 4 5 6 SET SCB ADDRESS Remote Loopback Level Control Input Xformer Output Xformer Select Type I, II, III, or V M Lead Detect E Lead Driver Channel 1 Chan. 2 Chan. 3 Chan. 4 Figure 2-1. VF-25 Voice Module, Block Diagram The PCM CODEC converts the eight-bit digital signal back to an analog audio signal and passes it to an electronic level control, which allows the output level to be adjusted up or down in <0.5 db increments. 2-2 GatesAir, Inc.

2 Functional Description & Setup Intraplex VF-25 Voice Module The control output passes to an amplifier stage and finally through the output transformer to the output connectors on the module adapter. With 0 dbm at the transmitter input, the output level is 0 dbm referenced to 600 ohms. Jumpers on the module allow the nominal output level to be set to +7 dbm. 2.3 E&M Signaling The VF-25 module supports E&M signaling Types I, II, III, and V and can also operate in Transmission Only mode with signaling turned off. When operated in the Transmission Only mode, signaling is disabled in all active channels. Settings on the module adapter (Appendix A) select the E&M signaling type. Figure 2-2 provides simplified block diagrams of these four signaling types. Figure 2-2. E&M Signaling Types 2.4 Alerts/Alarms The VF-25 module reports no module-level ALERT or ALARM signals to the shelf common module. 2.5 Loopbacks The VF-25 module provides two loopback types: 1. Local loopback of all four channels, used for testing the operation of the module during initial installation 2. Remote loopback of each channel individually, used when troubleshooting channel problems GatesAir, Inc. 2-3

Intraplex VF-25 Voice Module 2 Functional Description & Setup Figure 2-1 shows these loopback locations. Section 4 - Testing and Troubleshooting gives procedures for using these loopbacks. 2.6 Drop/Insert Operation A drop/insert multiplexer operates at a central point on a three (or more) point system. In Figure 2-3, Site 2 has a drop/insert multiplexer with a DI/A port connected to the transmission line to Site 1 and a DI/B port connected to the transmission line to Site 3. Individual payload channels may connect Sites 1 and 2, 1 and 3, or 2 and 3. Note: In the drop/insert multiplexer at Site 2, a VF-25 module can be set to transmit and receive either through the DI-A port (toward Site 1) or the DI-B port (toward Site 3) but not both. When a VF-25 module is installed in a terminal multiplexer (Site 1 or Site 3), its TERM switch must be set DOWN. However, when it is installed in a drop/insert multiplexer (Site 2) the TERM switch setting must be DOWN to transmit or receive through the DI/A port (toward Site 1) and UP to transmit or receive through the DI/B port (toward Site 3). Site 1 Terminal Multiplexer T1 or Aggregate Circuit Site 2 Drop/Insert Multiplexer Through Channels T1 or Aggregate Circuit Site 3 Terminal Multiplexer V F 2 5 V F 2 5 D/I A V F 2 5 Drop and Insert Channels V F 2 5 D/I B V F 2 5 V F 2 5 To/From Site 2 (TERM Switch DOWN) To/From Site 3 (TERM Switch DOWN) To/From Site 1 (TERM Switch DOWN) To/From Site 3 (TERM Switch UP) To/From Site 1 (TERM Switch DOWN) To/From Site 2 (TERM Switch DOWN) Figure 2-3. Three-Site System Using Drop/Insert 2.7 Controls and Indicators The VF-25 module has three switch banks, eight jumpers, and one green indicator light (Figures 2-4 and 2-5). The light indicates Service On; when it is on, the module is in service. Tables 2-1 through 2-5 describe the meaning and usage of the switches and jumpers on the module. TERMINAL TS1 LOCAL LOOPBACK TIME SLOT SELECT TS0 SIG OFF LOCAL/REMOTE SRVC ON/OFF SERVICE LIGHT 1 2 3 4 5 6 1 2 3 4 5 6 VF-25 Figure 2-4. VF-25 Voice Module, Front View 2-4 GatesAir, Inc.

AUX TERM TS1 TS0 SIG OFF REMOTE SRVC SRVC MSB LSB 2 Functional Description & Setup Intraplex VF-25 Voice Module IMPORTANT!!! All modules must be inserted so that the white eject tab is at the bottom in a full size (5 1/4" high) shelf, and at the right in a compact (1 3/4" high) shelf. JMP2 0dBm JMP1 0dBm JMP4 0dBm JMP3 0dBm JMP6 0dBm JMP5 0dBm JMP8 0dBm JMP7 0dBm SCB ADDRESS ON S3 1 2 3 4 5 6 S1 OPEN S2 OPEN 1 2 3 4 5 6 TIME SLOT SELECT 1 2 3 4 5 6 Figure 2-5. VF-25 Voice Module, Top View GatesAir, Inc. 2-5

0 d B m 0 d B m Intraplex VF-25 Voice Module 2 Functional Description & Setup Table 2-1. Configuration Switches Switch#/ Position Label Setting Description SW1/1-5 TIME SLOT SELECT Table 2-4 Select the desired starting time slot. SW1/6 AUX UP DOWN SW2/1 TERM UP DOWN NORMAL: Local loopback off Activate local loopback. Set the module to communicate through the DI-B port in a drop/insert multiplexer (Section 2.5 - Drop/Insert Operation). Set the module for use in a terminal multiplexer or to communicate through the DI-A port in a drop/insert multiplexer. SW2/2 & 3 TS1, TS0 Table 2-2 Select the number of active channels (1 to 4). SW2/4 SIG OFF UP DOWN SW2/5 REMOTE UP DOWN SW2/6 OFF UP DOWN NORMAL: Signaling is active. Signaling off (Transmission Only mode) Set module for local control. Set module for remote control. NORMAL: Module is in service. Take the module out of service. SW3/1-6 SCB ADDRESS Table 2-5 Set the remote access address for the module. Table 2-2. Active Channel Selection SW2, Positions 2 & 3 Switch Settings TS1 TS0 Channels Active UP UP Four channels active (channels 1-4) UP DOWN Three channels active (channels 1-3) DOWN UP Two channels active (channels 1-2) DOWN DOWN One channel active (channel 1 only) Table 2-3. Input/Output Level Jumper Settings = Normal Position = Reversed Position Jumper Description JMP1 Ch. 1 Tx input level: Normal = 0 dbm, Reversed = -16 dbm JMP2 Ch. 1 Rx output level: Normal = 0 dbm, Reversed = +7 dbm JMP3 Ch. 2 Tx input level: Normal = 0 dbm, Reversed = -16 dbm JMP4 Ch. 2 Rx output level: Normal = 0 dbm, Reversed = +7 dbm JMP5 Ch. 3 Tx input level: Normal = 0 dbm, Reversed = -16 dbm JMP6 Ch. 3 Rx output level: Normal = 0 dbm, Reversed = +7 dbm JMP7 Ch. 4 Tx input level: Normal = 0 dbm, Reversed = -16 dbm JMP8 Ch. 4 Rx output level: Normal = 0 dbm, Reversed = +7 dbm 2-6 GatesAir, Inc.

2 Functional Description & Setup Intraplex VF-25 Voice Module Table 2-4. Starting Time Slot Selection SW1, Positions 1-5 Time Slot* Positions** 1 2 3 4 5 Time Slot* Positions** 1 2 3 4 5 1 U U U U U 13 U D D U U 2 U U U U D 14 U D D U D 3 U U U D U 15 U D D D U 4 U U U D D 16 U D D D D 5 U U D U U 17 D U U U U 6 U U D U D 18 D U U U D 7 U U D D U 19 D U U D U 8 U U D D D 20 D U U D D 9 U D U U U 21 D U D U U 10 U D U U D 22 D U D U D 11 U D U D U 23 D U D D U 12 U D U D D 24 only D U D D D * Each active channel on the VF-25 module requires one time slot. The settings shown here select the first time slot; one to four consecutive time slots are used, depending on the number of active channels. For example, with all four channels active, selecting starting time slot 3 means this module would use time slots 3, 4, 5, and 6. Accordingly, starting time slots 22, 23, or 24 may be used only when fewer than four channels are active. ** U = UP, D = DOWN 2.8 Remote Control Interface VF-25 modules can be used under local or remote control. When under remote control, you can only change certain configuration parameters by the RS 232 remote port on the multiplexer. The multiplexer operation manual gives details on using ISiCL, the Intraplex Simple Command Language. Before the module can receive remote commands, it must first be assigned a card address. The card address is used to route remote commands and queries to a specific module in a multiplexer with the Serial Control Bus (SCB). In a full size shelf, it is generally set to the physical slot number the card occupies. It may be set to any number from 1 to 36 which is not in use by another card in the same multiplexer. The card address is determined by the SCB ADDRESS switch bank (SW3) settings (Table 2-5). GatesAir, Inc. 2-7

Intraplex VF-25 Voice Module 2 Functional Description & Setup Table 2-5. Card Address Setting SW3 Time Slot Positions* 1 2 3 4 5 6 Time Slot Positions* 1 2 3 4 5 6 1 0 0 0 0 0 1 19 0 1 0 0 1 1 2 0 0 0 0 1 0 20 0 1 0 1 0 0 3 0 0 0 0 1 1 21 0 1 0 1 0 1 4 0 0 0 1 0 0 22 0 1 0 1 1 0 5 0 0 0 1 0 1 23 0 1 0 1 1 1 6 0 0 0 1 1 0 24 0 1 1 0 0 0 7 0 0 0 1 1 1 25 0 1 1 0 0 1 8 0 0 1 0 0 0 26 0 1 1 0 1 0 9 0 0 1 0 0 1 27 0 1 1 0 1 1 10 0 0 1 0 1 0 28 0 1 1 1 0 0 11 0 0 1 0 1 1 29 0 1 1 1 0 1 12 0 0 1 1 0 0 30 0 1 1 1 1 0 13 0 0 1 1 0 1 31 0 1 1 1 1 1 14 0 0 1 1 1 0 32 1 0 0 0 0 0 15 0 0 1 1 1 1 33 1 0 0 0 0 1 16 0 1 0 0 0 0 34 1 0 0 0 1 0 17 0 1 0 0 0 1 35 1 0 0 0 1 1 18 0 1 0 0 1 0 36 1 0 0 1 0 0 * 0 = OFF, 1 = ON The VF-25 module reports itself as a TYPE 103 module. Its remote operation involves the use of P (parameter) codes and S (status) codes, as Sections 2.8.1 and 2.8.2 describe. 2.8.1 P Codes P codes, when used in the parameter field of a SET command, allow you to set parameters on the module by remote control, just like setting the switches on a module under local control. There are ten P codes for the VF-25 module, P1 through P10. Each is a number from 0 to 255, also represented as an eight-digit binary number (in parentheses). The first two P codes, P1 and P2, provide remote access to the settings controlled by the dip switches on the module itself, as well as allowing activation of the remote loopback feature. The remaining eight codes, P3 through P10, are used to change the input and output level settings for each of the four voice channels on the module. Table 2-6 describes the meanings of the P codes in detail. P codes also appear in the response to a CONFIG? query, showing the current parameter settings on the module. Note: When using binary numbers in the parameter field of a SET command, the numbers must be preceded by the letter B, for example: <MULTIPLEXER ADDRESS>:<CARD ADDRESS>:SET:P02 = B00000001; In addition to the P codes, you can turn service on or off for the module by sending SRVC = ON or SRVC = OFF in the ISiCL parameter field with a SET command. 2-8 GatesAir, Inc.

2 Functional Description & Setup Intraplex VF-25 Voice Module A typical VF-25 response to a CONFIG? query looks like this: * OK CHANNEL CARD 3, TYPE 103 UNDER REMOTE CONTROL SRVC = ON P01 = 195 (B11000011) P02 = 1 (B00000001) P03 = 124 (B01111100) P04 = 124 (B01111100) P05 = 124 (B01111100) P06 = 124 (B01111100) P07 = 124 (B01111100) P08 = 124 (B01111100) P09 = 124 (B01111100) P10 = 124 (B01111100); Table 2-6. Remote Configuration Settings (P Codes) P Code Digit(s) and Effect Value* Description P1 B00000000 --- TIME SLOT SELECT 00001 to 11111 From left to right, these five bits represent the binary value of the starting time slot (Table 2-7). B00000000 -- ----- 0 1 Normal - signaling active Signaling off (Transmit Only mode) B00000000 ------ ACTIVE CHANNELS 00 01 10 11 Four channels active Three channels active Two channels active One channel active P2 B00000000 ------- TERMINAL 0 1 Set to operate through the DI B port in a drop/insert multiplexer. Set to operate in a terminal multiplexer or by the DI-A port in a drop/insert multiplexer. B00000000 ------ - LOCAL LOOPBACK 0 1 Normal - local loopback off Local loopback active B00000000 ---- -- Not Used B00000000 --- ---- CH. 1 REMOTE LB 0 1 Normal - Channel 1 remote loopback off Channel 1 remote loopback active B00000000 -- ----- CH. 2 REMOTE LB 0 1 Normal - Channel 2 remote loopback off Channel 2 remote loopback active B00000000 - ------ CH. 3 REMOTE LB 0 1 Normal - Channel 3 remote loopback off Channel 3 remote loopback active B00000000 ------- CH. 4 REMOTE LB 0 1 Normal - Channel 4 remote loopback off Channel 4 remote loopback active GatesAir, Inc. 2-9

Intraplex VF-25 Voice Module 2 Functional Description & Setup Table 2-6. Remote Configuration Settings (P Codes) (continued) P Code Digit(s) and Effect Value* Description P3 P4 P5 P6 P7 P8 P9 P10 B00000000 CH.1 TX LEVEL B00000000 CH.1 RX LEVEL B00000000 CH.2 TX LEVEL B00000000 CH.2 RX LEVEL B00000000 CH.3 TX LEVEL B00000000 CH.3 RX LEVEL B00000000 CH.4 TX LEVEL B00000000 CH.4 RX LEVEL 0 255 Adjusts the input level for Channel 1 (Section 2.8.1.1 - Input and Output Level Adjustments). 0 255 Adjusts the output level for Channel 1. 0 255 Adjusts the input level for Channel 2. 0 255 Adjusts the output level for Channel 2. 0 255 Adjusts the input level for Channel 3. 0 255 Adjusts the output level for Channel 3. 0 255 Adjusts the input level for Channel 4. 0 255 Adjusts the output level for Channel 4. * These values are the only legal ones for setting the parameters. Setting any parameter to a value outside its specified range produces an unpredictable result. Table 2-7. Starting Time Slot Selection by Remote Access Time Slot P1 Positions* 5 4 3 2 1 Time Slot P1 Positions* 5 4 3 2 1 1 0 0 0 0 1 13 0 1 1 0 1 2 0 0 0 1 0 14 0 1 1 1 0 3 0 0 0 1 1 15 0 1 1 1 1 4 0 0 1 0 0 16 1 0 0 0 0 5 0 0 1 0 1 17 1 0 0 0 1 6 0 0 1 1 0 18 1 0 0 1 0 7 0 0 1 1 1 19 1 0 0 1 1 8 0 1 0 0 0 20 1 0 1 0 0 9 0 1 0 0 1 21 1 0 1 0 1 10 0 1 0 1 0 22 1 0 1 1 0 11 0 1 0 1 1 23 1 0 1 1 1 12 0 1 1 0 0 24 only 1 1 0 0 0 * These positions represent the five least significant digits of P1, as Table 2-6 shows. As with the physical time slot selection switches, the settings shown here select the first time slot; one to four 2-10 GatesAir, Inc.

Gain (Loss) in db 2 Functional Description & Setup Intraplex VF-25 Voice Module consecutive time slots are used, depending on the number of active channels. Starting time slots 22, 23, or 24 may be used only when fewer than four channels are active. 2.8.1.1 Input and Output Level Adjustments Each channel on the VF-25 module has nominal input and output levels determined by the jumper settings on the module (Table 2-3). The factory standard setting is 0 dbm input, 0 dbm output for all channels, with the option of -16 dbm input, +7 dbm output. Eight electronic level controls allow the input and output levels for each channel to be adjusted in <0.5 db increments. These adjustments must be made through the remote port using P codes P3 through P10. Each of these P codes can have a decimal value of 0 through 255. A value of 124 is the factory default setting; when the P code is 124, the actual level is within ±0.5 db of the nominal. Increasing the value toward 255 increases the gain and decreasing the value toward 0 decreases the gain. Note: When the VF-25 module is placed into local mode (Remote switch off), all eight level controls reset to the factory default value of 124. Figure 2-6 shows the effect of changing the P code setting. Note that on the transmit input, increasing the gain means that a lower input signal level can be accommodated, while on the receive output, increasing the gain means that a higher output level is provided. Table 2-8 converts each P Code to an equivalent decibel value. Figure 2-6 shows that setting the P code to 197 provides a gain increase of about +4dB. With the input/output level jumpers in the normal position, P3 = 197 would change the nominal input level for Channel 1 to 4 dbm and P4 = 197 would change the nominal output level for Channel 1 to +4 dbm. P=111 gives a setting of -1.0 db; P=139 gives a setting of +1.0 db. Within the range of P=111 to P=139, changing the P code setting by 3 results in approximately 0.2 db change in level. Table 2-8 provides suggested P code settings to achieve particular values of db gain. The P code can be varied from these settings to fine-tune the VF level. Warning! Do not adjust the level controls to provide input and output levels beyond the maximums specified for the VF-25 module: Input Output -16 dbm to +3 dbm -10 dbm to +10 dbm Settings outside this range may overdrive the input and output amplifiers. -16-14 -12-10 -8-6 -4-2 0 2 4 6-1.0 db 0 24 48 72 96 111 124 139 168 192 216 240 255 P-Code Setting Factory default setting: Jumper normal = 0 dbm in, 0 dbm out Jumper reversed = -16 dbm in, +7 dbm +1.0 db Figure 2-6. Attenuation Level Controls (P3 P10) GatesAir, Inc. 2-11

Intraplex VF-25 Voice Module 2 Functional Description & Setup Table 2-8. Suggested P Codes to Achieve Desired db Gain Gain P Code Gain P Code Gain P Code + 6.0 db 247 0 db 124* - 6.0 db 62 + 5.5 db 234-0.5 db 117-6.5 db 59 + 5.0 db 221-1.0 db 111-7.0 db 55 + 4.5 db 208-1.5 db 104-7.5 db 52 + 4.0 db 197-2.0 db 99-8.0 db 49 + 3.5 db 186-2.5 db 93-9.0 db 44 + 3.0 db 175-3.0 db 88-10.0 db 39 + 2.5 db 165-3.5 db 83-11.0 db 35 + 2.0 db 156-4.0 db 78-12.0 db 31 + 1.5 db 147-4.5 db 74-13.0 db 28 + 1.0 db 139-5.0 db 70-14.0 db 25 + 0.5 db 131-5.5 db 66-15.0 db 22 * The factory P Code setting is 124 2.8.2 S Codes S codes appear in response to a STATUS? query. Like the P codes, they are eight-digit binary numbers. There is one S code for the VF-25 module, S1. A typical VF-25 response to a STATUS? query looks like this: * OK CHANNEL CARD 3, TYPE 103 S01 = 0 (B00000000); The binary representation is more useful here than the digital, as each digit of the binary number represents the on/off status of one of the E- and M Leads, as Table 2-9 defines. 2-12 GatesAir, Inc.

2 Functional Description & Setup Intraplex VF-25 Voice Module Table 2-9. Remote Status Messages (S Codes) Position Value Description B00000000 ------- B00000000 ------ - B00000000 ----- -- B00000000 ---- --- B00000000 --- ---- B00000000 -- ----- B00000000 - ------ B00000000 ------- 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 M-Lead for Channel 1 is idle. M-Lead for Channel 1 is busy. M-Lead for Channel 2 is idle. M-Lead for Channel 2 is busy. M-Lead for Channel 3 is idle. M-Lead for Channel 3 is busy. M-Lead for Channel 4 is idle. M-Lead for Channel 4 is busy. E-Lead for Channel 1 is idle. Signaling is turned on and the E-Lead for Channel 1 is busy. E-Lead for Channel 2 is idle. Signaling is turned on and the E-Lead for Channel 2 is busy. E-Lead for Channel 3 is idle. Signaling is turned on and the E-Lead for Channel 3 is busy. E-Lead for Channel 4 is idle. Signaling is turned on and the E-Lead for Channel 4 is busy. GatesAir, Inc. 2-13

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No header here Section 3 Installation Refer to the figures and tables in Section 2 as needed during installation. Power supply and time slot considerations may affect the installation of this module into an existing multiplexer shelf. Refer to the sections on Channel Module Configuration Rules and Adding Channel Modules to Existing Systems in your multiplexer operation manual for more information. 3.1 Inspection Inspect the module for shipping damage. If you have questions regarding possible equipment damage or shipping errors, call Networking Customer Service at (217) 222-8200 or send an e-mail to tsupport@gatesair.com. 3.2 Configuration 1. Install this module in an unused physical slot in the Intraplex multiplexer and make sure to install the appropriate module adapter or cross-connect panel at the rear of the slot where you intend to mount this module. Appendix A gives information on selecting and installing module adapters. 2. Set for use in a terminal or drop/insert multiplexer using the TERM switch (SW2, position 1): UP to communicate through the DI-B port in a drop/insert multiplexer, DOWN in a terminal multiplexer or to communicate through the DI-A port in a drop/insert multiplexer. 3. Select the number of active voice channels using the TS0 and TS1 switches (SW2, positions 2 and 3) (Table 2-2). 4. Select the desired starting time slot using the TIME SLOT SELECT switches (SW1, positions 1-5) (Table 2-4). Warning! This module requires one time slot for each active channel. Do not select a starting time slot that would attempt to place data in a time slot higher than 24. 5. Set the address for the card using the SCB ADDRESS switch bank (SW3) (Table 2-5). You do not need to perform this step unless you are using the remote access and control capabilities of the multiplexer, but it is advisable to set each card to a different address during installation in order to simplify the activation of remote operation in the future. Note: Remove module before changing SCB address. 6. After completing the previous steps, set the module for local control or remote control operation: For local control: a. Set to local control: REMOTE switch (S2, position 5) UP. b. Turn service on: OFF switch (S2, position 6) UP. c. Install the module into the shelf (Section 3.3 - Mounting). For remote control operation: a. Set to local control: REMOTE switch (S2, position 5) UP. b. Turn service off: OFF switch (S2, position 6) DOWN. c. Install the module (Section 3.3 - Mounting). d. Wait 15 seconds; the parameter settings for the module load in the shelf common module. e. Remove the module and set to remote control: REMOTE switch DOWN. Do not turn service on. f. Reinstall the module. g. Verify the configuration by remote control issuing a CONFIG? query. Table 3-1 shows a typical VF-25 response to a CONFIG? query. h. Set service ON by remote control (ISiCL SET command, with SRVC = ON in the parameter field). You can now change the operating parameters for the module using GatesAir, Inc. 3-1

Intraplex VF-25 Voice Module 3 Installation ISiCL commands. Your multiplexer operation manual gives details on using the Intraplex Simple Command Language (ISiCL) for remote access and control. 3.3 Mounting Insert the module into the selected slot in the Intraplex multiplexer. Warning! The module must be inserted so that the white ejector tab is at the bottom in a full size (5¼" high) shelf or at the right in a compact (1¾" high) shelf. Table 3.1 Sample VF-25 Response to A CONFIG? Query Response * OK Valid command received. CHANNEL CARD 4, TYPE 103 UNDER REMOTE CONTROL SRVC = OFF VF-25 module is in physical slot 4. Remote control is on. Service is off. Meaning P01 = 12 (B00001100) Four channels active, signaling on, using time slots 12, 13, 14, and 15. P02 = 1 (B00000001) P03 =124 (B01111100) P04 =124 (B01111100) P05 =124 (B01111100) P06 =124 (B01111100) P07 =124 (B01111100) P08 =124 (B01111100) P09 =124 (B01111100) P10 =124 (B01111100) Terminal operation, all loopbacks off. Ch. 1 Tx level control set to 0 db. Ch. 1 Rx level control set to 0 db. Ch. 2 Tx level control set to 0 db. Ch. 2 Rx level control set to 0 db. Ch. 3 Tx level control set to 0 db. Ch. 3 Rx level control set to 0 db. Ch. 4 Tx level control set to 0 db. Ch. 4 Rx level control set to 0 db. 3-2 GatesAir, Inc.

No header here Section 4 Testing & Troubleshooting 4.1 Local versus Remote Loopback Every VF-25 module is tested before it leaves the factory. In addition, each module provides local and remote loopbacks for on-site testing and troubleshooting purposes. The local loopback on the VF-25 module loops back all four channels together and is intended for use during initial installation and testing. This loopback occurs directly after the analog-to-digital PCM conversion; that is, the analog audio enters the module, is coded to 8-bit PCM data, and is then immediately decoded and passed back out as analog. The remote loopback on the VF-25 module allows each channel to be looped back independently, making it useful for testing one channel while the other channels on the module remain in service. For this loopback, the analog signal is encoded and transmitted over the T1 circuit, is decoded by the module at the far end, and is then looped back, re-encoded, and sent back to the originating end. Location 1 Location 2 VF Port 1 VF Port 2 VF Port 3 VF Port 4 PCM Coder Decoder T1 or other aggregate circuit PCM Coder Decoder VF Port 1 VF Port 2 VF Port 3 VF Port 4 Local Loopback (all four channels) Remote Loopback (each channel separately) Figure 4-1: VF-25 Loopbacks 4.2 VF-25 Loopback Setup Procedure 1. Activate the desired loopback using P code P2 (Section 2.8.1 - P Codes). A local loopback of all four channels may also be activated using the LOOPBACK switch (Switch 1, position 6; it may be labeled AUX on some modules.) When doing a local loopback, test each channel sequentially. 2. Verify that the input and output level jumpers for the channel being tested are in the Normal position (Table 2-3). 3. Connect the output of an audio signal generator (Convex 806A TIMS or equivalent) to the input leads for the desired channel. Insert a 1004 Hz test tone at 0 dbm referenced to 600 Ohms. 4. Measure channel output at the output leads for the channel being tested. The output should be 0 dbm referenced to 600 Ohms, ±0.5 db. 5. Measure signal-to-noise ratio with C message weighting, which should be greater than 33 db S/N. 6. If you are performing a remote loopback, deactivate the loopback for this channel and activate the loopback for the next channel to be tested. If you are using a local loopback, leave the loopback up until all channels have been tested. GatesAir, Inc. 4-1

Intraplex VF-25 Voice Module 4 Testing & Troubleshooting 7. Repeat the previous steps for each active channel. 8. Remove the test equipment and deactivate all loopbacks. If there is an apparent malfunction, first check that the configuration is appropriate for the transmission system in use. If you are doing end-to-end testing, check that the transmit and receive configurations are identical. Problems may occur at the common equipment or facility level that affect the operation of this module. The Troubleshooting section in your multiplexer operation manual gives system analysis procedures. 4-2 GatesAir, Inc.

No header here 5.1 Detailed Specifications Section 5 Specifications Configuration System Compatibility Frequency Response Input/Output Level Level Range Impedance Idle Channel Noise Signal to Noise Coding Format Signaling M-Lead Input Input Output Four independent voice frequency channels Intraplex ACS-160 Series T1 Multiplexers Intraplex DCS-9560 and DCS-9565 Series CrossConnect Multiplexers Intraplex NetXpress IP Multiplexer 300 to 3000 Hz, +/-0.5 db Selectable: Nominal 0 dbm input, 0 dbm output or nominal -16 dbm input, +7 dbm output Adjustable in <0.5 db steps -16.0 dbm to +3.0 dbm -10.0 dbm to +10.0 dbm Balanced, 600 ohms input and output Less than 23 dbrnc0 1004 Hz input, 0 to -30 dbm: Less than 33 db in C Message weighting -law PCM, 64 kbps per channel Selectable, E&M Type I, II, III, or V or Transmission Only (TO) operation Type I, II, and III: Busy = -20 to -60 Volts Idle = Ground Type V: Busy = Ground Idle = Open E-Lead Output Type I, III and V: Busy = Ground Idle = Open Type II: Busy = Contact closure to SG Idle = Open Time slots Loopbacks One to four sequential time slots (one for each active channel). Starting time slot is user-selectable. Local and remote analog loopbacks GatesAir, Inc. 5-1

Intraplex VF-25 Voice Module 5 Specifications Indicator light Environmental Power Consumption Green light indicates Service On Temperature: 0-50 C Operating Humidity: 0% - 90% Non-condensing 2.0 Watts nominal with all four channels active Specifications are subject to change without notice. 5.2 Notice of FCC Compliance This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference when this equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his/her own expense. Warning! This is a Class A product. In a domestic environment this product may cause radio interference, in which case the user may be required to take adequate measures. 5-2 GatesAir, Inc.

No header here Appendix A Module Adapters for the VF-25 Voice Module There are a variety of module adapters that can be installed with the VF-25 voice module. To improve quality and options, we continue to offer some adapters while designing and developing new ones. This section covers both the current module adapters and the discontinued ones and gives pin and jumper locations and other details for each adapter. The VF-25 module must be installed with a module adapter listed in Table A-1. Table A-1. Module Adapters for VF-25 Module Current MA-305 MA-305C MA-306C MA-308C MA-309C Discontinued MA-305B MA-306 MA-308 MA-308B MA-309 MA-310 A.1 Current Module Adapters A.1.1 MA-305 Four-wire, 50-pin Connector The MA-305 module adapter accepts a 50-pin connector, Amphenol 57-30500 or equivalent (Figure A-1). Table A-2 shows the pin assignments on this connector. Jumpers JMP1 through JMP5 are used to select the signaling type. Figure A-1 shows how to position the adapter and set the jumpers. Table A-2. MA-305 Pin Assignments Pin Assignment Signal Ch. 1 Ch. 2 Ch. 3 Ch. 4 Input (Ring) 1 5 9 13 Input (Tip) 26 30 34 38 Output (Ring) 2 6 10 14 Output (Tip) 27 31 35 39 E-Lead 28 32 36 40 M-Lead 29 33 37 41 Signal Ground 3 7 11 15 Signal Battery 4 8 12 16 GatesAir, Inc. A-1

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module For Jumper JMP5: For Jumpers JMP1, 2, 3, and 4 = Type II only = Type I, II, or III = Type V only = Type I, III, or V MA-305 JMP1 1 26 JMP2 JMP3 JMP5 25 50 JMP4 Figure A-1. MA-305 Jumper Settings and Face Plate To install the MA-305 module adapter, perform these steps: 1. At the rear of the chassis, insert the adapter into the same slot position in which the VF-25 module has been installed. 2. Once it is seated securely, secure the unit with screws provided. 3. Plug the connector into the adapter. A.1.2 MA-305C Four-Wire, 50-pin Connector The MA-305C module adapter accepts a 50-pin connector, Amphenol 57-30500 or equivalent (Figure A-2). Table A-3 shows the pin assignments on this connector. Jumpers JMP1 through JMP9 are used to select the signaling type (JMP5 is not used on the MA-305C). Figure A-2 shows how to hold the adapter and set the jumpers. A-2 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module Table A-3. MA-305C Pin Assignments Pin Assignment Signal Ch. 1 Ch. 2 Ch. 3 Ch. 4 Input (Ring) 1 5 9 13 Input (Tip) 26 30 34 38 Output (Ring) 2 6 10 14 Output (Tip) 27 31 35 39 E-Lead 28 32 36 40 M-Lead 29 33 37 41 Signal Ground 3 7 11 15 Signal Battery 4 8 12 16 For Jumpers JMP6, 7, 8 and 9: For Jumper JMP1, 2, 3 and 4: = Type V only = Type I, II, or III = Type II only = Type I, III, or V Figure A-2. MA-305C Jumper Settings and Face Plate GatesAir, Inc. A-3

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module To utilize the signal battery polarity option, remove the jumpers in applications where the external signaling battery is positive (+) with respect to chassis ground. In cases of positive (+) signaling battery applications, both jumpers must be removed. To install the MA-305C module adapter, perform these steps: 1. At the rear of the chassis, insert the adapter into the same slot position in which the VF-25 module has been installed. 2. Once it is seated securely, secure the unit with screws provided. 3. Plug the connector into the adapter. A.1.3 MA-306C Four-Wire, RJ-45 Connector The MA-306C module adapter provides specially modified RJ-45 modular connectors for use with 4- wire E&M Voice Frequency Modules in any Intraplex multiplexer. This adapter provides modular connectors for each of the four circuits (Figure A-3). Figure A-3. MA-306 Jumpers and Face Plate A.1.3.1 Jumper Settings Jumpers JMP2 through JMP9 (there is no JMP1) are used to select the signaling type. Figure A-3 shows how to hold the adapter, and Table A-4 shows how to set the jumpers. Tables A-5 through A-7 show settings for channels 1 through 4. Note that pin 1 is square in each table. A-4 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module Table A-4. MA-306C Channel 1 Jumper Settings Jumper JP2 Jumper JP6 Type II Type V Type I, III, and V Type I, II, and III Table A-5. MA-306C Channel 2 Jumper Settings Jumper JP3 Jumper JP7 Type II Type V Type I, III, and V Type I, II, and III Table A-6. MA-306C Channel 3 Jumper Settings Jumper JP4 Jumper JP8 Type II Type V Type I, III, and V Type I, II, and III GatesAir, Inc. A-5

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module Table A-7. MA-306C Channel 4 Jumper Settings Jumper JP5 Jumper JP9 Type II Type V Type I, III, and V Type I, II, and III A.1.3.2 Circuit Connectors The MA-306C module adapter provides four RJ-45 circuit jacks, which allows you to connect/disconnect a single channel connector without disturbing traffic on the other three. With eight leads available, Types I, II, III, and V E&M signaling is supported. A.1.3.3 Modular Connector Wiring Figure A-4 and Table A-8 show how to wire the modular connectors. The MA-306C accepts a RJ-45 connector that conforms to cabling standard T568A and to USOC RJ1CX. Table A-8. MA-306C Pin Assignments Pin Description Comments Figure A-4. MA-306C Pin Assignments Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 T1 R1 E R T SG M SB T1 & R1 send signal from CO side (trunking) to user side (signaling) Output from MA-306 T & R send signal from CO side (signaling) to user side (trunking) Input to MA-306 A-6 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module A.1.3.4 Signal Battery Polarity To utilize the signal battery polarity option, remove the jumpers in applications where the external signaling battery is positive (+) with respect to chassis ground. In cases of positive (+) signaling battery applications, both jumpers must be removed. A.1.3.5 Installation To install the MA-306C module adapter, perform these steps: 1. At the rear of the chassis, insert the adapter into the same slot position in which the VF-25 module has been installed. 2. Once it is seated securely, secure the unit with screws provided. 3. Plug the connector into the adapter. A.1.4 MA-308C Four-Wire, RJ-45 Connector The MA-308C module adapter combines Modular connectors Monitoring jacks Tandem application attenuators The MA-308C module adapter is designed to use with 4-wire E&M Voice Frequency Modules in any multiplexer. It provides eight connectors for signal connection and monitoring, as well as eight switches for control of additional signal attenuation. The switches are marked T=Transmit and R=Receive, for each of the four channels (Figure A-5). GatesAir, Inc. A-7

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module Figure A-5. MA-308C Jumpers and Face Plate The MA-308C module adapter provides modular connectors for each of the four circuits and is two card slots in width. The MA-308C module adapter is designed to meet the needs for interface signal monitoring and additional attenuation. Figure A-6 defines the pin assignments for the eight connectors. A.1.4.1 Jumper Settings Jumpers JMP1 through JMP5 are used to select the signaling type. Figure A-5 shows how to hold the adapter and set the jumpers. Tables A-9 and A-10 show alternate settings. Table A-9. MA-308C Alternate Jumper Settings Jumper JP1 Jumpers JP2, JP3, and JP5 Type I, II, or III Type II only A-8 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module Table A-10. MA-308C Alternate Jumper Settings Jumper JP1 Jumpers JP2, JP3, and JP5 Type V only Type I, III, or V A.1.4.2 Circuit Connectors The MA-308C module adapter provides four RJ-45 circuit jacks on the right. With eight leads available, Types I, II, III, and V E&M signaling is supported. The MA-308C also provides per-channel attenuation for compatibility with tandem connections. MA-308C has the capability to connect/disconnect a single channel connector without disturbing traffic on the other three. A.1.4.3 Monitor Connectors The MA-308C module adapter provides four RJ-45 monitor jacks on the left for monitoring the input and output VF and signaling levels for each of the four channels. Cables terminated with modular plugs can be inserted into and removed from the modular jacks at any time. The MA-308C module adapter enables interface signal monitoring of the input and output VF signal levels, the E and M leads, and SB and SG. Each RJ-45 monitor is wired to bridge its associated RJ-45 VF leads as well as SB and SG and E and M leads. A.1.4.4 Modular Connector Wiring Figure A-6 shows how to wire the modular connectors, conforming to cabling standard T568A and to USOC RJ1CX. The MA-308C accepts a RJ-45 connector. Table A-11 shows the pin assignments on this connector. Figure A-6. MA-308C Pin Assignments GatesAir, Inc. A-9

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module Table A-11. MA-308C Pin Assignments Pairing Pin Description Comments Pair 3 Pin 1 Pin 2 T1 R1 T1 & R1 send signal from CO side (trunking) to user side (signaling) Pair 2 Pin 3 E Pair 1 Pin 4 Pin 5 R T T1 & R1 send signal from user side (signaling) to CO side (trunking) Pair 2 Pin 6 SG Pair 4 Pin 7 Pin 8 M SB A.1.4.5 Attenuation For interoperability with legacy equipment, you can select additional attenuation of 23 db to any Tx or Rx circuit with the MA-308C module adapter. Each circuit can have its attenuator settings changed while the module is installed in the shelf. Attenuation is added when the selector is in the IN position and no additional attenuation is added when the selector is in the OUT position. Table A-12 shows the MA-308C switch settings. You can use the level settings of the associated VF module to make additional level adjustments. Table A-12. MA-308C Attenuator Switch Settings Channels 1-4 Transmit (T) Receive (R) Gain 1 In Out -23 db Transmit circuit 1 Out In -23 db Receive circuit 2 In Out -23 db Transmit circuit 2 Out In -23 db Receive circuit 3 In Out -23 db Transmit circuit 3 Out In -23 db Receive circuit 4 In Out -23 db Transmit circuit 4 Out In -23 db Receive circuit All Channels In In -23 db Transmit & Receive circuits All Channels Out Out No additional attenuation A.1.4.6 Signal Battery Polarity To utilize the signal battery polarity option, remove the jumpers in applications where the external signaling battery is positive (+) with respect to chassis ground. In cases of positive (+) signaling battery applications, both jumpers must be removed. A.1.4.7 Installation To install the MA-308C module adapter, perform these steps: 1. At the rear of the chassis, insert the adapter into the same slot position in which the VF-25 module has been installed. A-10 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module 2. Once it is seated securely, secure the unit with screws provided. 3. Plug the connector into the adapter. A.1.5 MA-309C Two-Wire, 50-pin Connector The MA-309C 2-wire E&M interface module adapter provides 2-wire to 4-wire conversion for Intraplex Products voice frequency channel cards with E&M type signaling. This adapter interfaces four channels with 600 termination per channel. Audio frequency response is 300Hz to 3kHz +-0.5dB. Nominal audio levels are 0dBm input, 0dBm output. Receive output levels of 0dBm, -3dBm, and -10dBm are selectable per channel as E&M signaling of type I, II, III, and V. The MA-309C connects to the T, R, E, and M signaling leads using a 50-pin Amphenol 57-30500 (or equivalent) type connector. The MA-309C module adapter is used in conjunction with the VF-25, VF-25E (for PCM coding), VF-27, and the VF-27E (for ADPCM coding) voice frequency channel cards for 2-wire applications. Termination of impedance is 600. Receive gain settings of 0dB, -3dB, and -10dB are selectable per channel (Figure A-7). Figure A-7. MA-309C Jumpers and Face Plate A.1.5.1 Jumper Settings Figure A-8 shows jumper locations on the MA-309C module adapter. Two sets control signaling and one set controls output levels. The first set of jumpers that control signaling is JMP1, JMP2, JMP3, and JMP4. The second set is JMP9, JMP10, JMP11, and JMP12. These eight jumpers control the E&M signaling type used by the associated voice channel: GatesAir, Inc. A-11

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module Jumpers 1 and 9 (JMP1 and JMP9) control the type of signaling for channel 1. JMP2 and JMP10 determine the type of signaling for channel 2. JMP3 and 11 control channel 3. JMP4 and JMP12 control channel 4. Type I is the factory default signaling type installed on the MA-309C module adapter. Figure A-8 shows the jumpers and the settings that manage E&M signaling. The remaining four jumpers, JMP5, JMP6, JMP7, and JMP8, control the output level for channels 1 through 4: Jumper 5 (JMP5) controls the fixed output levels for channel 1. JMP6 determines the output for channel 2. JMP7 controls channel 3. JMP8 controls channel 4. Table A-13 shows the jumper settings that control output levels. Table A-14 selectable attenuation control for nominal input levels of -16 and 0 dbm from voice frequency modules used with the MA- 309C module adapter. Figure A-8. MA-309C Jumper Settings for Signaling Type Selection A-12 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module Table A-13. Selectable Attenuation Control for Nominal Input Level of 0dBm Jumper / Position Output of MA-309C Channel JMP 5 / Position 1-2 JMP 5 / Position 3-2 JMP 5/ Position open JMP 6 / Position 1-2 JMP 6 / Position 3-2 JMP 6/ Position open JMP 7 / Position 1-2 JMP 7 / Position 3-2 JMP 7/ Position open JMP 8 / Position 1-2 JMP 8 / Position 3-2 JMP 8/ Position open -10dBm attenuation -3dBm attenuation 0dBm attenuation -10dBm attenuation -3dBm attenuation 0dBm attenuation -10dBm attenuation -3dBm attenuation 0dBm attenuation -10dBm attenuation -3dBm attenuation 0dBm attenuation 1 2 3 4 Table A-14. Selectable Attenuation Control for Nominal Input Levels of -16 & 0 dbm Input to VF-25 VF-25 Settings MA-309C JMP Settings & Resultant Outputs 0 dbm -3 dbm -10dBm -16 dbm in +7 db +7 dbm out +4 dbm out -3 dbm out -16 dbm in 0 db 0 dbm out -3 dbm out -10 dbm out 0 dbm in +7 db +7 dbm out +4 dbm out -3 dbm out 0 dbm in 0 db 0 dbm out -3 dbm out -10 dbm out A.1.5.2 I/O Connection A 50-pin Telco connector provides connection to the MA-309C module adapter. The 50-pin Amphenol 57-30500 (or equivalent) connector provides per channel T, R, E, M, SG, and SB leads for installation. Table A-15 shows the T / R and E&M leads pin out and gives a synopsis of the active pins by channel assignment. The E&M leads are the same pin out used on the 4-wire MA-305 module adapter. Table A-15. MA-309C Pin Assignments Pin Assignment Signal Ch. 1 Ch. 2 Ch. 3 Ch. 4 Ring 1 5 9 13 Tip 26 30 34 38 E-Lead 28 32 36 40 M-Lead 29 33 37 41 Signal Ground 3 7 11 15 Signal Battery 4 8 12 16 A.1.5.3 E&M Signaling Type I, II, III, or V interface is selectable by jumper setting per channel. Figure A-8 shows the jumper settings that control signaling type selection. The top of the figure shows Pin A. GatesAir, Inc. A-13

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module A.1.5.4 Attenuation Control Figure A-9 shows the jumper settings available to control output attenuation. The top of the figure shows Pin A. The default setting is 0dBm in and 0dBm out. Table A-16 shows the attenuation for nominal output level of 0dBm. Interface Type diagrams appear in other sections of this manual. Figure A-9. MA-309C Jumper Settings for Attenuation Control Table A-16. Selectable Attenuation Control for Nominal Input Level of 0dBm Jumper/Position MA-309C Output Channel JMP 5/Position 1-2 JMP 5/Position 3-2 JMP 5/Position open JMP 6/Position 1-2 JMP 6/Position 3-2 JMP 6/Position open JMP 7/Position 1-2 JMP 7/Position 3-2 JMP 7/Position open JMP 8/Position 1-2 JMP 8/Position 3-2 JMP 8/Position open -10dBm attenuation -3dBm attenuation 0dBm attenuation -10dBm attenuation -3dBm attenuation 0dBm attenuation -10dBm attenuation -3dBm attenuation 0dBm attenuation -10dBm attenuation -3dBm attenuation 0dBm attenuation 1 2 3 4 A-14 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module A.1.5.5 Additional MA-309C Input/Output Options In the situation where the VF-25 module and MA-309C module adapter are used for transport of 2- Wire Audio with E&M signaling on the output side of the circuit, there are two possibilities to adjust the output signal level (one on the VF-25 module and one on the module adapter). Table A-17 shows the selectable attenuation control for nominal input levels of -16 and 0 dbm from voice frequency modules using the MA-309C module adapter. Table A-18 lists specifications for this adapter. Table A-17. Selectable Attenuation Control for Nominal Input Levels of -16 & 0 dbm Input to VF-25 VF-25 Settings MA-309C Jumper Settings & Resultant Outputs 0 dbm -3 dbm -10dBm -16 dbm in +7 db +7 dbm out +4 dbm out -3 dbm out -16 dbm in 0 db 0 dbm out -3 dbm out -10 dbm out 0 dbm in +7 db +7 dbm out +4 dbm out -3 dbm out 0 dbm in 0 db 0 dbm out -3 dbm out -10 dbm out Table A-18. MA-309C Technical Specifications Condition Input Impedance Level tracking +3dBm0 to 37dBm0 input Tx level 0 dbm from 4W to 2W Rx level 0 dbm from 2W to 4W 2W echo return loss ERL minimum SRL high minimum SRL low minimum Value 600 < 0.5dB+/- < 0.5dB+/- < 0.5dB+/- 28 db 20 db 20 db 4W trans hybrid loss SRL high minimum SRL Low minimum ERL minimum 4Wire RX level terminated from 2Wire Freq. response 0 db referenced to 1004Hz 2 wire receive circuit 304Hz 1004Hz 3004Hz 3204Hz 3404Hz 2 wire transmit circuit 304Hz 1004Hz 3004Hz 3204Hz 3404Hz 20 db 20 db 28 db -28.5dB -.5 +/-.25dB -.5 +/-.25dB -.5 +/-.25dB -.75 +/-.25dB -1.5 +/-.25dB -.5 +/-.25dB -.5 +/-.25dB -.5 +/-.25dB -.75 +/-.25dB -1.5 +/-.25dB GatesAir, Inc. A-15

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module A.1.5.6 Signal Battery Polarity To utilize the signal battery polarity option, remove the jumpers in applications where the external signaling battery is positive (+) with respect to chassis ground. In cases of positive (+) signaling battery applications, both jumpers must be removed. A.1.5.7 Installation To install the MA-309C module adapter, perform these steps: 1. At the rear of the chassis, insert the adapter into the same slot position in which the VF-25 module has been installed. 2. Once it is seated securely, secure the unit with screws provided. 3. Plug the connector into the adapter. A.1.6 MA-310 Two-Wire, RJ-45 Connector The MA-310 2-wire E&M interface module adapter provides 2-wire to 4-wire conversion for Intraplex Products voice frequency channel modules with E&M type signaling. This adapter interfaces four channels with 600 termination per channel. Audio frequency response is 300Hz to 3kHz +-0.5dB. Nominal audio levels are 0dBm input, 0dBm output. Receive output levels of 0dBm, -3dBm and - 10dBm are selectable per channel as E&M signaling of Type I, II, III, and V. The MA-310 module adapter is used in conjunction with the VF-25, VF-25E (for PCM coding), VF-27, and the VF-27E (for ADPCM coding) voice frequency channel modules for 2-wire applications. Termination of impedance is 600. Receive gain settings of 0dB, -3dB, and -10dB are selectable per channel (Figure A-10). Figure A-10. MA-310 Jumpers and Face Plate A-16 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module A.1.6.1 Jumper Settings Figure A-10 shows jumper locations on the MA-310 module adapter. Two sets control signaling and one set controls output levels. The first set of jumpers that control signaling is JMP1, JMP2, JMP3, and JMP4. The second set is JMP9, JMP10, JMP11, and JMP12. These eight jumpers control the E&M signaling type used by the associated voice channel: Jumpers 1 and 9 (JMP1 and JMP9) control the type of signaling for channel 1. JMP2 and JMP10 determine the type of signaling for channel 2. JMP3 and 11 control channel 3. JMP4 and JMP12 control channel 4. Type I is the factory default signaling type installed on the MA-310 module adapter. Figure A-11 shows the jumpers and the settings that manage E&M signaling. The remaining four jumpers, JMP5, JMP6, JMP7, and JMP8, control the output level for channels 1 through 4: Jumper 5 (JMP5) controls the fixed output levels for channel 1. JMP6 determines the output for channel 2. JMP7 controls channel 3. JMP8 controls channel 4. Table A-19 shows the jumper settings that control output levels. Table A-20 shows the selectable attenuation control for nominal input levels of -16 and 0 dbm from voice frequency modules used with the MA-310 module adapter. Figure A-11. MA-310 Jumper Settings for Signaling Type Selection GatesAir, Inc. A-17

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module Table A-19. Selectable Attenuation Control for Nominal Input Level of 0dBm Jumper / Position Output of MA-310 Channel JMP 5 / Position 1-2 JMP 5 / Position 3-2 JMP 5/ Position open JMP 6 / Position 1-2 JMP 6 / Position 3-2 JMP 6/ Position open JMP 7 / Position 1-2 JMP 7 / Position 3-2 JMP 7/ Position open JMP 8 / Position 1-2 JMP 8 / Position 3-2 JMP 8/ Position open -10dBm attenuation -3dBm attenuation 0dBm attenuation -10dBm attenuation -3dBm attenuation 0dBm attenuation -10dBm attenuation -3dBm attenuation 0dBm attenuation -10dBm attenuation -3dBm attenuation 0dBm attenuation 1 2 3 4 Table A-20. Selectable Attenuation Control for Nominal Input Levels of 16 & 0 dbm Input to VF-25 VF-25 Settings MA-310 JMP Settings & Resultant Outputs 0 dbm -3 dbm -10dBm -16 dbm in +7 db +7 dbm out +4 dbm out -3 dbm out -16 dbm in 0 db 0 dbm out -3 dbm out -10 dbm out 0 dbm in +7 db +7 dbm out +4 dbm out -3 dbm out 0 dbm in 0 db 0 dbm out -3 dbm out -10 dbm out A.1.6.2 Modular Connector Wiring Figure A-12 shows how to wire the modular connectors, conforming to cabling standard T568A and to USOC RJ1CX. The MA-310 accepts a RJ-45 connector. Table A-21 shows the pin assignments on this connector. Figure A-12. MA-310 Pin Assignments A-18 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module Table A-21. MA-310 Pin Assignments Pairing Pin Description Comments Pair 3 Pin 1 Pin 2 T1 R1 T1 & R1 send signal from CO side (trunking) to user side (signaling) Pair 2 Pin 3 E Pair 1 Pin 4 Pin 5 R T T1 & R1 send signal from user side (signaling) to CO side (trunking) Pair 2 Pin 6 SG Pair 4 Pin 7 Pin 8 M SB A.1.6.3 E&M Signaling Type I, II, III, or V interface is selectable by jumper setting per channel. Figure A-11 shows the jumper settings that control signaling type selection. The top of the figure shows Pin A. A.1.6.4 Attenuation Control Figure A-13 shows the jumper settings available to control output attenuation. The top of the figure shows Pin A. The default setting is 0dBm in and 0dBm out. Table A-22 shows the attenuation for nominal output level of 0dBm. Interface Type diagrams appear in other sections of this manual. Figure A-13. MA-310 Jumper Settings for Attenuation Control GatesAir, Inc. A-19

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module Table A-22. Selectable Attenuation Control for Nominal Input Level of 0dBm Jumper/Position MA-310 Output Channel JMP 5/Position 1-2 JMP 5/Position 3-2 JMP 5/Position open JMP 6/Position 1-2 JMP 6/Position 3-2 JMP 6/Position open JMP 7/Position 1-2 JMP 7/Position 3-2 JMP 7/Position open JMP 8/Position 1-2 JMP 8/Position 3-2 JMP 8/Position open -10dBm attenuation -3dBm attenuation 0dBm attenuation -10dBm attenuation -3dBm attenuation 0dBm attenuation -10dBm attenuation -3dBm attenuation 0dBm attenuation -10dBm attenuation -3dBm attenuation 0dBm attenuation 1 2 3 4 A.1.6.5 Additional MA-310 Input/Output Options In the situation where the VF-25 module and MA-310 module adapter are used for transport of 2-Wire Audio with E&M signaling on the output side of the circuit, there are two possibilities to adjust the output signal level (one on the VF-25 module and one on the module adapter). Table A-23 shows the selectable using the MA-310 module adapter. Table A-24 lists specifications for this adapter. Table A-23. Selectable Attenuation Control for Nominal Input Levels of -16 dbm & 0 dbm Input to VF-25 VF-25 Settings MA-310 Jumper Settings & Resultant Outputs 0 dbm -3 dbm -10dBm -16 dbm in +7 db +7 dbm out +4 dbm out -3 dbm out -16 dbm in 0 db 0 dbm out -3 dbm out -10 dbm out 0 dbm in +7 db +7 dbm out +4 dbm out -3 dbm out 0 dbm in 0 db 0 dbm out -3 dbm out -10 dbm out A-20 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module Table A-24. MA-310 Technical Specifications Condition Input Impedance Level tracking +3dBm0 to 37dBm0 input Tx level 0 dbm from 4W to 2W Rx level 0 dbm from 2W to 4W 2W echo return loss ERL minimum SRL high minimum SRL low minimum Value 600 < 0.5dB+/- < 0.5dB+/- < 0.5dB+/- 28 db 20 db 20 db 4W trans hybrid loss SRL high minimum SRL Low minimum ERL minimum 4Wire RX level terminated from 2Wire Freq. response 0 db referenced to 1004Hz 2 wire receive circuit 304Hz 1004Hz 3004Hz 3204Hz 3404Hz 2 wire transmit circuit 304Hz 1004Hz 3004Hz 3204Hz 3404Hz 20 db 20 db 28 db -28.5dB -.5 +/-.25dB -.5 +/-.25dB -.5 +/-.25dB -.75 +/-.25dB -1.5 +/-.25dB -.5 +/-.25dB -.5 +/-.25dB -.5 +/-.25dB -.75 +/-.25dB -1.5 +/-.25dB A.1.6.6 Signal Battery Polarity To utilize the signal battery polarity option, remove the jumpers in applications where the external signaling battery is positive (+) with respect to chassis ground. In cases of positive (+) signaling battery applications, both jumpers must be removed. A.1.6.7 Installation To install the MA-310 module adapter, perform these steps: 1. At the rear of the chassis, insert the adapter into the same slot position in which the VF-25 module has been installed. 2. Once it is seated securely, secure the unit with screws provided. 3. Plug the connector into the adapter. GatesAir, Inc. A-21

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module A.2 Discontinued Module Adapters A.2.1 MA-305B Four-wire, 50-pin Connector The MA-305B module adapter accepts a 50-pin connector, Amphenol 57-30500 or equivalent (Figure A-14). Table A-25 shows the pin assignments on this connector. Jumpers JMP1 through JMP9 are used to select the signaling type (JMP5 is not used on the MA-305B). Figure A-14 shows how to hold the adapter and set the jumpers. For Jumpers JMP6, 7, 8 and 9: For Jumper JMP1, 2, 3 and 4: = Type V only = Type I, II or III = Type II only = Type I, III or V Table A-25. MA-305B Pin Assignments Figure A-14. MA-305B Jumper Settings and Face Plate Pin Assignment Signal Ch. 1 Ch. 2 Ch. 3 Ch. 4 Input (Ring) 1 5 9 13 Input (Tip) 26 30 34 38 Output (Ring) 2 6 10 14 Output (Tip) 27 31 35 39 E-Lead 28 32 36 40 M-Lead 29 33 37 41 Signal Ground 3 7 11 15 Signal Battery 4 8 12 16 To install the MA-305B module adapter, perform these steps: A-22 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module 1. At the rear of the chassis, insert the adapter into the same slot position in which the VF-25 module has been installed. 2. Once it is seated securely, secure the unit with screws provided. 3. Plug the connector into the adapter. A.2.2 MA-306 Four-Wire, RJ-45 Connector The MA-306 module adapter provides specially modified RJ-45 modular connectors for use with 4-wire E&M Voice Frequency Modules in any Intraplex multiplexer. This adapter provides modular connectors for each of the four circuits (Figure A-15). Figure A-15. MA-306 Jumpers and Face Plate A.2.2.1 Jumper Settings Jumpers JMP2 through JMP9 (there is no JMP1) are used to select the signaling type. Figure A-15 shows how to hold the adapter, and Table A-26 shows how to set the jumpers. Tables A-27 through A- 29 show settings for channels 1 through 4. Note that pin 1 is square in each table. GatesAir, Inc. A-23

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module Table A-26. MA-306 Channel 1 Jumper Settings Jumper JP2 Jumper JP6 Type II Type V Type I, III, and V Type I, II, and III Table A-27. MA-306 Channel 2 Jumper Settings Jumper JP3 Jumper JP7 Type II Type V Type I, III, and V Type I, II, and III Table A-28. MA-306 Channel 3 Jumper Settings Jumper JP4 Jumper JP8 Type II Type V Type I, III, and V Type I, II, and III A-24 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module Table A-29. MA-306 Channel 4 Jumper Settings Jumper JP5 Jumper JP9 Type II Type V Type I, III, and V Type I, II, and III A.2.2.2 Circuit Connectors The MA-306 module adapter provides four RJ-45 circuit jacks, allowing the ability to connect/disconnect a single channel connector without disturbing traffic on the other three. With eight leads available, Type I, II, III, and V E&M signaling is supported. A.2.2.3 Modular Connector Wiring Figure A-16 and Table A-30 show how to wire the modular connectors. The MA-306 module adapter accepts a RJ-45 connector that conforms to cabling standard T568A and to USOC RJ1CX. Table A-30. MA-306 Pin Assignments Pin Description Comments Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 T1 R1 E R T SG M SB T1 & R1 send signal from CO side (trunking) to user side (signaling) Output from MA-306 T & R send signal from CO side (signaling) to user side (trunking) Input to MA-306 Figure A-16. MA-306 Pin Assignments GatesAir, Inc. A-25

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module A.2.2.4 Installation To install the MA-306 module adapter, perform these steps: 1. At the rear of the chassis, insert the adapter into the same slot position in which the VF-25 module has been installed. 2. Once it is seated securely, secure the unit with screws provided. 3. Plug the connector into the adapter. A.2.3 MA-308 Four-Wire, RJ-45 Connector The MA-308 module adapter combines Modular connectors Monitoring jacks Tandem application attenuators The MA-308 module adapter is designed to use with 4-wire E&M Voice Frequency Modules in any multiplexer. It provides eight connectors for signal connection and monitoring, as well as eight switches for control of additional signal attenuation. The switches are marked T=Transmit and R=Receive, for each of the four channels (Figure A-17). Figure A-17. MA-308 Jumpers and Face Plate The MA-308 module adapter provides modular connectors for each of the four circuits and is two card slots in width. The MA-308 module adapter is designed to meet the needs for interface signal monitoring and additional attenuation. Figure A-14 defines the pin assignments for the eight connectors. A-26 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module A.2.3.1 Jumper Settings Jumpers JMP1 through JMP5 are used to select the signaling type. Figure A-16 shows how to hold the adapter and set the jumpers. Tables A-31 and A-32 show alternate settings. Table A-31. MA-308 Alternate Jumper Settings Jumper JP1 Jumpers JP2, JP3, JP4, and JP5 Type I, II, or III Type II only Table A-32. MA-308 Alternate Jumper Settings Jumper JP1 Jumpers JP2, JP3, JP4, and JP5 Type V only Type I, III, or V A.2.3.2 Circuit Connectors The MA-308 module adapter provides four RJ-45 circuit jacks on the right. With eight leads available, Types I, II, III, and V E&M signaling is supported. The MA-308 module adapter also provides perchannel attenuation for compatibility with tandem connections. MA-308 module adapter has the capability to connect/disconnect a single channel connector without disturbing traffic on the other three. A.2.3.3 Monitor Connectors The MA-308 module adapter provides four RJ-45 monitor jacks on the left, for monitoring the input and output VF and signaling levels for each of the four channels. Cables terminated with modular plugs can be inserted into and removed from the modular jacks at any time. The MA-308 module adapter enables interface signal monitoring of the input and output VF signal levels, the E and M leads, and SB and SG. Each monitor RJ-45 is wired to bridge its associated RJ-45 VF leads, as well as SB and SG and E and M leads. A.2.3.4 Modular Connector Wiring Figure A-18 shows how to wire the modular connectors, which conforms to cabling standard T568A and to USOC RJ1CX. The MA-308 module adapter accepts a RJ-45 connector. Table A-33 shows the pin assignments on this connector. At the rear of the chassis, insert the MA-308 module adapter into the same slot position in which the voice frequency module has been installed. Once it is seated securely, secure the unit, with screws provided and plug the connector into the module adapter. GatesAir, Inc. A-27

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module Figure A-18. MA-308 Pin Assignments Table A-33. MA-308 Pin Assignments Pairing Pin Description Comments Pair 3 Pin 1 Pin 2 T1 R1 T1 & R1 send signal from CO side (trunking) to user side (signaling) Pair 2 Pin 3 E Pair 1 Pin 4 Pin 5 R T T1 & R1 send signal from user side (signaling) to CO side (trunking) Pair 2 Pin 6 SG Pair 4 Pin 7 Pin 8 M SB A.2.3.5 Attenuation For interoperability with legacy equipment, you can select additional attenuation of 23 db to any Tx or Rx circuit with the MA-308 module adapter. Each circuit can have its attenuator settings changed while the module is installed in the shelf. Attenuation is added when the selector is in the IN position and no additional attenuation is added when the selector is in the OUT position. Table A-34 shows the switch settings for the MA-308 module adapter. You can use the level settings of the associated VF module to make additional level adjustments. A-28 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module Table A-34. MA-308 Switch Settings Channels 1-4 Transmit (T) Receive (R) Gain 1 In Out -23 db Transmit circuit 1 Out In -23 db Receive circuit 2 In Out -23 db Transmit circuit 2 Out In -23 db Receive circuit 3 In Out -23 db Transmit circuit 3 Out In -23 db Receive circuit 4 In Out -23 db Transmit circuit 4 Out In -23 db Receive circuit All Channels In In -23 db Transmit & Receive circuits All Channels Out Out No additional attenuation A.2.3.6 Installation To install the MA-308 module adapter, perform these steps: 1. At the rear of the chassis, insert the adapter into the same slot position in which the VF-25 module has been installed. 2. Once it is seated securely, secure the unit with screws provided. 3. Plug the connector into the adapter. A.2.4 MA-308B Four-Wire, RJ-45 Connector The MA-308B module adapter combines Modular connectors Monitoring jacks Tandem application attenuators The MA-308B is designed to use with 4-wire E&M Voice Frequency Modules in any multiplexer. It provides eight connectors for signal connection and monitoring, as well as eight switches for control of additional signal attenuation. The switches are marked T=Transmit and R=Receive, for each of the four channels (Figure A-19). GatesAir, Inc. A-29

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module Figure A-19. MA-308B Jumpers and Face Plate The MA-308B module adapter provides modular connectors for each of the four circuits and is two module slots in width. The MA-308B module adapter is designed to meet the needs for interface signal monitoring and additional attenuation. A.2.4.1 Jumper Settings Jumpers JMP2 through JMP9 (there is no JMP1) are used to select the signaling type. Holding the MA- 308B module adapter as shown in Figure A-9, set the jumpers as shown. Table A-35 through A-38 show alternate settings for channels 1 through 4, respectively. A-30 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module Table A-35. MA-308B Channel 1 Alternate Jumper Settings Jumper JP2 Jumper JP6 Type II Type V Type I, III, and V Type I, II, and III Table A-36. MA-308B Channel 2 Alternate Jumper Settings Jumper JP3 Jumper JP7 Type II Type V Type I, III, and V Type I, II, and III Table A-37. MA-308B Channel 3 Alternate Jumper Settings Jumper JP4 Jumper JP8 Type II Type V Type I, III, and V Type I, II, and III GatesAir, Inc. A-31

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module Table A-38. MA-308B Channel 5 Alternate Jumper Settings Jumper JP5 Jumper JP9 Type II Type V Type I, III, and V Type I, II, and III A.2.4.2 Circuit Connectors The MA-308B module adapter provides four RJ-45 circuit jacks on the right. With eight leads available, Type I, II, III, and V E&M signaling is supported. This module adapter also provides per-channel attenuation for compatibility with tandem connections. The MA-308B module adapter provides the ability to connect/disconnect a single channel connector without disturbing traffic on the other three. A.2.4.3 Monitor Connectors The MA-308B module adapter provides four RJ-45 monitor jacks on the left, for monitoring the input and output VF and signaling levels for each of the four channels. Cables terminated with modular plugs can be inserted into and removed from the modular jacks at any time. This module adapter enables interface signal monitoring of the levels of the input and output VF signals, the E and M leads and SB and SG. Each monitor RJ-45 is wired to bridge its associated RJ-45 VF leads as well as SB and SG and E and M leads. A.2.4.4 Modular Connector Wiring Figure A-20 and Table A-39 show how to wire the modular connectors. The MA-308B module adapter accepts a RJ-45 connector that conforms to cabling standard T568A and to USOC RJ1CX. Figure A-20. MA-308B Pin Assignments A-32 GatesAir, Inc.

Appendix A MAs for VF-25 Voice Module Intraplex VF-25 Voice Module Table A-39. MA-308B Pin Assignments Pairing Pin Description Comments Pair 3 Pin 1 Pin 2 T1 R1 T1 & R1 send signal from CO side (trunking) to user side (signaling) Pair 2 Pin 3 E Pair 1 Pin 4 Pin 5 R T T1 & R1 send signal from user side (signaling) to CO side (trunking) Pair 2 Pin 6 SG Pair 4 Pin 7 Pin 8 M SB A.2.4.5 Attenuation Control For interoperability with legacy equipment, you can select additional attenuation of 23 db to any Tx or Rx circuit with the MA-308B module adapter. Each circuit can have its attenuator settings changed while the module is installed in the shelf. Attenuation is added when the selector is in the IN position and no additional attenuation is added when the selector is in the OUT position. Table A-40 shows the switch settings for the MA-308B module adapter. You can use the level settings of the associated VF module to make additional level adjustments. Table A-40. MA-308B Attenuator Switch Settings Channels 1-4 Transmit (T) Receive (R) Gain 1 In Out -23 db Transmit circuit 1 Out In -23 db Receive circuit 2 In Out -23 db Transmit circuit 2 Out In -23 db Receive circuit 3 In Out -23 db Transmit circuit 3 Out In -23 db Receive circuit 4 In Out -23 db Transmit circuit 4 Out In -23 db Receive circuit All Channels In In -23 db Transmit & Receive circuits All Channels Out Out No additional attenuation A.2.4.6 Installation To install the MA-308B module adapter, perform these steps: 1. At the rear of the chassis, insert the adapter into the same slot position in which the VF-25 module has been installed. 2. Once it is seated securely, secure the unit with screws provided. 3. Plug the connector into the adapter. GatesAir, Inc. A-33

Intraplex VF-25 Voice Module Appendix A MAs for VF-25 Voice Module A.2.5 MA-309 Two-Wire, 50-pin Connector The MA-309 2-wire E&M interface module adapter provides 2-wire to 4-wire conversion for Intraplex Products voice frequency channel modules with E&M type signaling. This adapter interfaces four channels with 600 termination per channel. Audio frequency response is 300Hz to 3kHz +-0.5dB. Nominal audio levels are 0dBm input, 0dBm output. Receive output levels of 0dBm, -3dBm and - 10dBm are selectable per channel as are E&M signaling of type I, II, III, and V. The MA-309 connects to the T, R, E and M signaling leads using a 50 pin Amphenol 57-30500 (or equivalent) type connector. The MA-309 module adapter is used in conjunction with the VF-25, VF-25E (for PCM coding), VF-27, and the VF-27E (for ADPCM coding) voice frequency channel modules for 2-wire applications. Termination of impedance is 600. Receive gain settings of 0dB, -3dB, and -10dB are selectable per channel (Figure A-21). Figure A-21. MA-309 Jumpers and Face Plate A.2.5.1 Jumper Settings Figure A-21 shows jumper locations on the MA-309 module adapter. Two sets control signaling and one set controls output levels. The first set of jumpers that control signaling is JMP1, JMP2, JMP3, and JMP4. The second set is JMP9, JMP10, JMP11, and JMP12. These eight jumpers control the E&M signaling type used by the associated voice channel: Jumpers 1 and 9 (JMP1 and JMP9) control the type of signaling for channel 1 A-34 GatesAir, Inc.