SCION xx Z24/Z12board d.01a
Section xx - Section xx - SUMMARY Operation... xx. 3 1. Overview... xx. 3 2. nvironment... xx. 4 3. Operating principle... xx. 4 4. Functional blocks... xx. 6 Configuration... xx. 9 1. Reference... xx. 9 2. Z24, Z12 board... xx.10 3. Strapping... xx.10 4. Meaning of the D... xx.11 Connection... xx.13 1. Connection... xx.13 2. Output pins... xx.14 d.01a Ref.3BA19919NAA xx.1
Section xx - xx.2 Ref.3BA19919NAA d.01a
Sectionxx-Z24/Z12board Z24/Z12board Operation 44A03222209A100AAN Operation dition: 01a 1. Overview his board allows 24 analog terminals to be connected to the AC system. A sub-equipped board allows 12 analog terminals to be connected to the AC system. he configuration of the Z24 /Z12 board is described in module Z24/Z12board-Operation. he connection of the 24 /Z12 board is described in module - Connection. Warning: he Z24 and Z12 boards shown here are the first generation of the Z board. hese boards have been newly designed and the new versions, which are also called Z24-2, Z12-2 and Z20/VG are showninthemodulez2(z24-2,z12-2,z20vg)board-operation. d.01a Ref.3BA19919NAA xx.3
Operation Section xx - 2. nvironment Figure 1 : R 1 1 28 YP 1 INKS 28 YP 1 INKS Backplane R 28 28 16 MHz clock Backplane 8 khz frame sync. Z D processeur D occupation Front panel 256 khz Converter sync. Analog line 1 DM 1 à 5 MDF -48V 0V48 Analog line 24 3. Operating principle 3.1. Reception direction Voice he analog signal is digitized in the COFIDC. Voice samples are coded on 8 bits according to law A and are sent on the CBS. he samples are multiplexed with the signalling by the CBS in order to form the frame IPCM destined for the system via the common part. Numbering xx.4 Ref.3BA19919NAA d.01a
Sectionxx-Z24/Z12board Z24/Z12board Operation he numbering sent by the terminal is routed via IPCM links (IPCM 0, IPCM 1 or IPCM 2) to the C1. his component injects it on IPCM 3 via the looped back type 1 link. his numbering is then decoded by the multifrequency receiver which sends the binary value to the AC via IPCM3. Signalling Signalling from a terminal is interpreted by the line interface (CIAA) which generates two signals: B:current loop<=>off-hook DA:earth button<=>broker call. his signalling is directly routed by the O links to the CBS. his component multiplexes the signalling with the voice signal to create the IPCM frame destined for the common part. 3.2. ransmission direction Voice he voice samples from the common part are sent to the CBS, which, transparent for voice, sends the samples to the COFIDC. he COFIDC converts them into an analog signal destined for the terminal. Signalling he ring instruction from the CPU is carried by the IPCM frame to the CBS. he CBS sends the signalling (ring command) via the C link to the CIAA line interface. he ring injector, validated by the ring command, amplifies the ring train received and injects the line current on the line. d.01a Ref.3BA19919NAA xx.5
Operation Section xx - 4. Functional blocks Figure 2 : front panel processor busy CIAA Backplane line 1 CIAA line 2 MUX Cofidec CIAA line 3 CIAA line 4 Module 1 Module 2 Module 3 Module 4 Module 5 Module 6 lines 5..8 lines 9..12 lines 13..16 lines 17..20 lines 21..24 CO O /C Multifrequency detector ASIC CBS MICI 0 MICI 1 MICI 2 MICI 3 Processor Common part C1 1/R1 à 28/R28 16 MHZ 8 khz -48V fuse +5V +12V CM8 Converter -5V 100V CM 3 Converter -48V 256 khz xx.6 Ref.3BA19919NAA d.01a
Sectionxx-Z24/Z12board Z24/Z12board Operation 4.1. ist he Z board is made up of different blocks: - CIAA, - COFIDC, - CBS, - Q23 multifrequency receiver, - common part, - power supply. 4.2. CIAA (subscriber line analog interface circuit) his daughter board has an analog line interface and a ring injector. ach CIAA processes an analog termination. he interface ensures line 48V power supply and current regulation. It carries out 2W/4W transformation. By observing the line, it generates the signalling (off- hook, broker call) and sends it to the CBS via the O links. he ring injector, validated by the ring command from the CBS, amplifies the ring train. he call current is sent on the line. 4.3. COFIDC his component converts the voice analog signal into a digitized signal and vice versa. It processes 4 channels simultaneously. o process 24 terminations, 6 COFIDCs are installed on the board. Following a CPU instruction, the COFIDC decodes the ring byte (from the CBS) into an analog signal destined for the ring injector. 4.4. CBS (Clock B channel Signalling) In transmission, it multiplexes voice (from the COFIDC) and signalling (from the CIAA) on the IPCM link destined for the common part. In reception, it demultiplexes voice and signalling. Following serial/parallel transformation, signalling is sent to the line interfaces via the C wires. Voice is sent to the COFIDC. It programs, via the CO links, the COFIDCs in line with board configuration (gain level, voice S distribution, echo suppressor level). It controls the Q23 multifrequency receiver I/O ports. 4.5. Q23 multifrequency receiver A signal processor (PS) carries out Q23 frequency detection on the board. he value decoded is sent to the common part via IPCM 3. he Q23 receiver can process 4 channels simultaneously. d.01a Ref.3BA19919NAA xx.7
Operation Section xx - 4.6. Common part he common part interfaces the Z board with the other system boards. For further details, refer to the description of the common part. ach IPCM link has a 2.048 MHz throughput and transmits the signalling and voice of the 8 terminations in full duplex: IPCM 0 Figure 3 : B S B S B S ine 1 ine 4 ine 8 125 micro s. 32 S he terminations are distributed on the IPCM as follows: - PCM 0 : terminations 1..8, - IPCM 1 : terminations 9..16, - IPCM 2 : terminations 17..24. he IPCM 3 link carries, via the 4 Ss, the multifrequencies destined for the Q23 receiver and returns the decoded values to the common part. F F F F Figure 4 : 31 0 1 2 4 6 30 125 micro s. 32 S IPCM 3: Q23 frequencies reception. Only S 0, 2, 4 and 6 are used. 4.7. Power supply Board power supply From the -48V feeding the board, two converters supply the required voltages. he CM3 converter supplies the 100V to the ring injector (8 possible supplies simultaneously). he CM8 converter supplies the board with +5V, -5V and +12V. ine power supply hrough a fuse, the -48V supplies the analog lines. xx.8 Ref.3BA19919NAA d.01a
Sectionxx-Z24/Z12board Z24/Z12board Configuration 44A03222209A020AAN Configuration dition: 01a 1. Reference Z24 board reference : 3BA 53065 AA, AB, AC, AD, A, AF, AK, A, AM, AN, AP, AQ, AR, AS, AY, AZ, BW. Z12 board reference : 3BA 53071 AY. he suffix depends on the country where the system is used. d.01a Ref.3BA19919NAA xx.9
Configuration Section xx - 2. Z24, Z12 board Figure 5 : H1 H2 X11 3. Strapping x-factory strappings are shown on grey background. Normal est Operating mode X11 X11 xx.10 Ref.3BA19919NAA d.01a
Sectionxx-Z24/Z12board Z24/Z12board Configuration 4. Meaning of the D Z24 Z12 CPU BSY CPU BSY able 1 : Summary table D CPU (green D) BSY (orange D) Meaning Processor activity indicator light Z line activity indicator light able 2 : CPU D iming Meaning Illuminated steady Initializing 100 ms (on)/ 1s (off) oading 10 ms (on)/ 10 ms (off) Reflashing boot 300 ms (on)/ 300 ms (off) Waiting for CPU 8 x (900 ms (on)/ 600 ms (off))/1 s (off) RAM test error 8 x (300 ms (on)/ 600 ms (off))/1 s (off) Checksum error d.01a Ref.3BA19919NAA xx.11
Configuration Section xx - xx.12 Ref.3BA19919NAA d.01a
Sectionxx-Z24/Z12board Z24/Z12board Connection Connection dition: 01a 44A03222209A030AAN 1. Connection he Z24 (Z12) board is plugged in an interface position of the AC shelf. Figure 6 : Backplane Y1 cable with or without module or 32 ports patch panel if VH Z24 or Z12 board If the connection is : - by cable : in this case, distribution frame is carried out using a ype 1 cable with or without modules (see module Y1 64PSDIN cable - Hardware description or module Y1 64PSDIN cable with module - Hardware description ), d.01a Ref.3BA19919NAA xx.13
Connection Section xx - - by patch panel (VH cabinet only) : in this case, the connection s carried out using a 32-port patch panel (see module VH rack - Connection - 32 ports module ). 2. Output pins Backpanel rear side view C B A 1 b1 GND a1 2 b2 GND a2 3 b3 GND a3 4 b4 GND a4 5 b5 GND a5 6 b6 GND a6 7 b7 GND a7 8 b8 GND a8 9 b9 GND a9 10 b10 GND a10 11 b11 GND a11 12 b12 GND a12 13 b13 GND a13 14 b14 GND a14 15 b15 GND a15 16 b16 GND a16 17 b17 GND a17 18 b18 GND a18 19 b19 GND a19 20 b20 GND a20 21 b21 GND a21 22 b22 GND a22 23 b23 GND a23 24 b24 GND a24 25 GND GND GND 26 GND DSP X GND xx.14 Ref.3BA19919NAA d.01a
Sectionxx-Z24/Z12board Z24/Z12board Connection Backpanel rear side view C B A 27 GND DSP RX GND 28 GND CPU X GND 29 GND CPU RX GND 30 GND GND GND 31 GND GND GND 32 GND GND GND he Z12 board has no a13/b13 to a24/b24 outlets. d.01a Ref.3BA19919NAA xx.15