Technical Description of TANDBERG 6000 with software version E3/B8

Transcription

1 Technical Description of TANDBERG 6000 with software version E3/B8 TANDBERG D12001 Rev. 10 D12001 rev. 10 1

2 Table of contents 1. INTRODUCTION PRODUCT DESCRIPTION CODEC Software Versions WIDE ANGLE VIEW (W.A.V.E.) CAMERA Camera Features Camera Pinouts and connectors Multiple Camera Control Camera Tracking Calculation of Horizontal Viewing Area Camera Control Interface REMOTE CONTROL Transmission Protocol Key Pad Layout and Codes MONITOR(S) CABINET TANDBERG NATURAL AUDIO MODULE (NAM II) OPERATION AND USER INTERFACE CODEC INTERFACES NETWORK INTERFACES AND FEATURES PRI E1/T1 ISDN & Leased Line E1/T1 Interface PRI E1/T1 ISDN Leased Line E1/T BRI ISDN Interface ISDN Subaddress & MSN Ethernet / LAN Interface (H.323) Default IP Password Quality of Service features (QoS) Automatic selection of H.323 or H.320 outgoing calls IP adaptive bandwidth management Gatekeeper authentication Registration to Call Manager Configuring an H.323 client on the CallManager H.323 ID Dynamic playout buffering Asymmetrical media capabilities Diagnostic tools for IP NAT support Latency & Jitter Layer 4 Ports used in H.323 calls IP packet sizes Intelligent Packet Loss Recovery (IPLR) IP Conflict Warning NET Interface Streaming Automatic announcement of Streaming Intelligent Call Management (ICM) Network Profiles Encryption AGGREGATION STANDARDS BONDING D12001 rev. 10 2

3 4.2.2 H Encoding delay DATA INTERFACE/APPLICATION PROGRAMMABLE INTERFACE (API) Data Protocols Translation in RS232 cable for TANDBERG 6000 dual monitor (OPTIONAL) VIDEO INTERFACES AND VIDEO FEATURES Video Inputs XGA Input ( PC Presenter ) VGA, SVGA and XGA Pin layout PC Soft Presenter (Optional) Video Outputs XGA Output Optimized Video Compression Intelligent Video Management (IVM) IVM Resolution Duo Video (Optional) Single Monitor Duo Video (Optional) Digital Clarity (Optional) Natural Video (icif/isif) Native Resolutions One-touch Snapshot Screen Saver AUDIO INTERFACES AND AUDIO FEATURES Audio Inputs Specification microphone Inputs Specification audio line Inputs Specification standard microphone (AT841R) Specification Audio Science microphone (Optional Equipment) Audio Outputs Specification Audio line Outputs Flexible Audio Features Acoustic Echo Cancellers Adjusting the Acoustic Echo Cancellers Noise Reduction (NR) Audio levelling/ Automatic Gain Control (AGC) VCR Audio Features Telephony Analogue Telephone add-on (US option only) Microphone Off Audio Compression Algorithms SYSTEM MANAGEMENT LAN Interface Set-up Platform Requirements Protocols Supported System Management Functionality Remote software upgrades using FTP: Remote software upgrades during a call Management using a standard Web-browser: Management using a standard Telnet-client: Management using a terminal connected to the RS232 port: Remote Management using SNMP: Security Disable Services Security Alert System Protection System Access (/Account) codes: Menu Password: Authentication of Remote Management System...61 D12001 rev. 10 3

4 4.6.7 Layer 4 ports used by the system WEB SNAPSHOTS TANDBERG MULTISITE (OPTIONAL) MultiSite Cascading MISCELLANEOUS FEATURES MULTI-LANGUAGE OPTIONS DIRECTORY MultiSite Entries BOOT UP LOGO STARTUP SCRIPTS LOOPBACK TESTING FOR REMOTE DIAGNOSTICS MAXIMUM CALL LENGTH CLOSED CAPTIONING/TEXT CHAT OTHER STANDARDS SUPPORTED H H H.331 (Broadcast mode) H.231/H.243 (MCU control) H.243 Password H.281 (FECC) KG-194/KIV-7 (NATO encryption) ENVIRONMENTAL ISSUES TANDBERG S ENVIRONMENTAL POLICY ENVIRONMENTAL CONSIDERATIONS PRODUCT APPROVALS CONNECTION OF TELE-TERMINAL EQUIPMENT EMC EMISSION - RADIATED ELECTROMAGNETIC INTERFERENCE EMC IMMUNITY ELECTRICAL SAFETY PRODUCT RELIABILITY TECHNICAL SPECIFICATION OF TANDBERG MECHANICAL INFORMATION PACKAGING THE TANDBERG 6000 PORTABLE VERSION OPERATING TEMPERATURE AND HUMIDITY STORAGE AND TRANSPORT TEMPERATURE SYSTEM POWER CONSUMPTION TECHNICAL SPECIFICATION SHEET D12001 rev. 10 4

5 1. Introduction The TANDBERG 6000 is a high-end roll-about videoconferencing system designed for use with network rates from 56 kbps up to 2 Mbps using ITU-T H.320 standards for video compression and a combination of H.221 and BONDING for communication on up to 30 ISDN B-channels. The system also supports calls up to 3 Mbps when connected to a LAN, using the ITU-T H.323 standard. All features of the TANDBERG 6000 are based on standards set by the ITU-T. When directly connected to BRI ISDN networks, TANDBERG's SoftMux enables BONDING calls up to 768 kbps. When directly connected to PRI ISDN networks, TANDBERG's SoftMux enables BONDING calls up to 2 Mbps. When directly connected to special data networks, TANDBERG's network manager enables automatic detection of speeds up to 2 Mbps. When directly connected to a Local Area Network, TANDBERG's network manager enables automatic detection of speeds up to 3 Mbps. If the system is connected to both ISDN and LAN the TANDBERG 6000 can handle both ISDN sites and IP sites in the same call. D12001 rev. 10 5

6 The TANDBERG 6000 videoconferencing system consists of a Codec (COding / DECoding unit), combined with a PAL or NTSC monitor, a remotely controllable PAL or NTSC camera, the TANDBERG Natural Audio Module, a hand held remote control unit, a tabletop microphone and a single stand rollabout cabinet. The TANDBERG 6000 can be installed as a single or a dual monitor system. The Codec and Natural Audio Module are installed inside the Cabinet. 2. Product Description 2.1 Codec The Codec is the "brain" of the system and handles all incoming and outgoing video, audio and data towards the switched public telephone networks, Local Area Networks (LAN) or external networks. The Codec receives pictures from a video source e.g. the TANDBERG Camera, encodes and compresses the live video and audio at rates of up to 30 frames per second (60 fields per second). The coded image and audio is transmitted to a remote unit at rates up to 768 kbps (ISDN BRI), 2 Mbps (ISDN PRI/ External networks) or 3 Mbps (IP networks). The Codec also receives incoming video and audio at rates up to 3 Mbps, decodes the live video and audio and passes the video signal to the monitor for display. Audio is decoded and passed to the TANDBERG Natural Audio module. D12001 rev. 10 6

7 2.1.1 Software Versions There are two main software versions for TANDBERG 6000; differentiated by maximum possible bandwidth in a call (both available in either PAL or NTSC): 768 kbps on ISDN (BRI or PRI) and external networks; 3 Mbps on LAN. 2 Mbps on ISDN PRI/E1 (1.5 Mbps on ISDN PRI/T1) and external networks; 3 Mbps on LAN. For each software version, there are six software options with special features included: Software Option Features 1 Standard Receive Digital Clarity (4xCIF/4xSIF/VGA/SVGA/XGA 1 ) 2 Natural Presenter Package (NPP) Duo Video Transmit & Receive Digital Clarity (4xCIF/4xSIF/VGA/SVGA/XGA 1 ) PC Soft Presenter 3 MultiSite (MS) NPP Internal MCU Audio Bridge 1 XGA only supported from software E1 onwards D12001 rev. 10 7

8 2.2 Wide Angle View (W.A.V.E.) Camera The TANDBERG 6000 is equipped with the W.A.V.E. Camera, which is controlled by the remote control. This allows the user to zoom, focus, pan and tilt the camera. The camera is either PAL or NTSC depending on the country of use. The power on the codec must be switched off whenever connecting/disconnecting a camera to/from the codec or a daisy chain 2. Only cameras with software revision TT0a or later support camera tracking and daisy chaining Camera Features Camera Specifications 1/3 CCD Colour Camera (single chip) PAL or NTSC 190 Pan + 77 Horizontal Field of View 10 x Zoom (optical) 35 Tilt + 61 Vertical Field of View 15 Camera Pre-sets Auto/Manual Focus/Brightness/White Balance Min. illumination 2,0 Lux (F1.8 wide) Max camera cable length supported 10m (32,8 ft) Focal length f=4,2 mm to 42 mm Power reqmnts DC 12 V, min. 1Amps ±5% Aperture F=1,8 to 2,7 (wide to tele) Max. focus response time 0.5sec ( to near) Zoom speed wide to tele 1,8sec The system is able to store up to 15 pre-set camera positions, making it easier for the user to change the selected view rapidly during a presentation or a meeting. If the main camera is selected, pan, tilt, zoom and focus will also be stored with the preset. The first 10 presets may be accessed via the remote control, while the 5 remaining presets are accessed by data port commands or IR-codes (e.g. by using the TANDBERG Tracker 3 ). The camera is equipped with a wide-angle lens and covers a wide area as shown below. The camera covers a horizontal field of view of 77, while panning takes the range up close to field of view Camera seen from above 77 field of view 2 See chapter for Multiple W.A.V.E. camera support 3 Information of the TANDBERG Tracker is found in the User Manual. 4 Maximum wide angle for all camera measurements. D12001 rev. 10 8

9 Minimum horizontal field of view (maximum zoom in) is 7.7. The camera covers a vertical field of view of 61, while tilting takes the range up to 96. Tilting the camera max. 15 upward and max. 20 downward. Automatic or manual brightness, focus and white balance ensures that the user obtains the best possible picture. Horizontal resolution: 450 TV lines for PAL and 460 TV lines for NTSC. Number of picture elements: 752 (h) x 582 (v) for PAL and 768 (h) x 494 (v) for NTSC. Shortest Subject Distance: 10 mm (wide end) and 1000 mm (tele end) At the codec s side, the camera cable splits in two: One presents the S-video Output (for connection to codec s Video Input1) while the other 9-PIN D-sub connector presents power (12V) and control signals for moving the camera. The maximum length of the camera cable for main camera supported by TANDBERG is 10m (33 ft)- may be extended up to 20 m (66 ft) when using cable with external power supply. D12001 rev. 10 9

10 2.2.2 Camera Pinouts and connectors 8-PIN RJ (shielded modular jack): This connector is used for the power and control signals to the main camera. pin V (presence when connected in daisy chain) pin-7 GND pin-6 GND pin-5 RXD (in) pin-4 TXD (out) pin-3 +12V pin-2 GND pin-1 +12V Standard Phono: Used for composite video signal Power: 2.0 mm DC power jack (+12V, 1A required) Standard Mini Din: Used for S-Video signal 6-PIN RJ (modular jack): This connector is used when cascading cameras: Control (out) signal and external camera detection. Note: It does not provide power for cascaded camera. Pin 6 Pin 5 Pin 4 Pin 3 Pin 2 Pin 1 GND GND RXD (in) TXD (out) Presence (+12V in daisy chain) GND D12001 rev

11 2.2.3 Multiple Camera Control The TANDBERG 6000 is able to control up to four W.A.V.E. cameras from the remote control. The Main Camera must be connected to data port 2 on the Codec. The other cameras must be daisy-chained to the Main Camera. The Codec will provide power for the Main Camera only. The other cameras each need a separate power supply. The Main Camera must be connected to Video Input 1; the second camera must be connected to Video Input 2 and so on. The codec will automatically detect the number of cameras and the camera ID can be read in the System self test menu. The maximum length of the camera cable for multiple cameras supported by TANDBERG is 20 m (65 ft). The figure below is an example of how multiple cameras should be connected: Camera Tracking Voice-activated camera tracking with noise suppression and preset-combination has been implemented in the TANDBERG 6000 software. A W.A.V.E. Camera connected to Video Input 1 can be used for camera tracking 5. Two or three microphones must be installed and each microphone must be associated with a camera-preset position (preset P7 to Mic1, P8 to Mic2 and/or P9 to Mic3). Camera tracking is temporarily turned off when another video source is selected (e.g. a document camera) or when the camera is manually adjusted. 5 If more than one W.A.V.E. camera is connected to the system, the presets may also be put on these cameras. D12001 rev

12 2.2.5 Calculation of Horizontal Viewing Area The W.A.V.E. Camera s viewing area is maximized when the camera is zoomed fully out and minimized when the camera is zoomed fully in. To calculate the viewing area, the following measurements need to be taken: Camera Horizontal Viewing Area B Distance A The maximum viewing area for the W.A.V.E. camera, with the camera zoomed fully out is calculated by the formula: (Distance) A x 1.6 = (Max. viewing width) B max E.g. If A is 5 meters then the width of the viewing area B will be 5 x 1.6 = 8.0 meters The minimum viewing area for the W.A.V.E. camera, with the camera zoomed fully in is calculated by the formula: (Distance) A x 0.13 = (Min. viewing width) B min E.g. If A is 5 meters then the width of the viewing area B will be 5 x 0.13 = 0.65 meters Camera Control Interface The control cable for the camera must be connected to Data port 2. When the Codec is powered up, Data port 2 will automatically detect if a camera is attached to it. The TANDBERG 6000 supports two different camera protocols, the TANDBERG camera protocol and the VISCA protocol. To control the W.A.V.E. Camera, the following parameters are required on Data port 2: 9600 Baud 8 data bits 1 stop bit No parity Auto or VISCA The TANDBERG 6000 also supports: Cameras such as Sony EVI D30/31 using the Sony VISCA protocol. The camera type in use will be automatically detected in the system boot-sequence except cameras using the VISCA protocol, where this option must be selected in the data port menu. D12001 rev

13 2.3 Remote Control Transmission Protocol The Infra Red (IR) sensor for the remote control is located in front of the W.A.V.E. Camera, just below the front glass. There is also a second IRsensor located in the front of the Codec itself, which will be automatically enabled if the W.A.V.E. Camera is not connected to Data port 2. The TANDBERG handheld remote control transmits IR- signals using the following parameters: Protocol Siemens SDA2208 Reference Freq. 485 khz Address 4 & 7 IR wavelength 940 nm IR carrier Freq. 30 khz P1 P2 P3 main cam aux doc cam vcr pc snapshot far end move pip selfview mic off + zoom - OK menu connect directory disconnect delete presets P abc 1 2 ghi jkl 4 5 pqrs tuv 7 8 * 0 store def 3 mno 6 wxyz 9 # Key Pad Layout and Codes The hand held remote control transmits 46 different codes. The keypad will not transmit additional codes if more than one key is pressed simultaneously. The following table shows relationship between the remote s buttons and their respective codes. BUTTON CODES REMOTE BUTTON CODES REMOTE Address Decimal Hex BUTTON NAME Address Decimal Hex BUTTON NAME NUMBER OK NUMBER CONNECT(GREEN) NUMBER DISCONNECT (RED) NUMBER DIRECTORY NUMBER MENU NUMBER DELETE NUMBER STORE NUMBER PRESET NUMBER A NUMBER A B * B SCREEN MENU A (LEFT) C # C SCREEN MENU B (MIDDLE) D MAIN CAM D SCREEN MENU C (RIGHT) E AUX E F DOC F VCR P PC P SELFVIEW P SNAPSHOT FAR END PIP MOVE ZOOM OUT ZOOM IN VOLUME DOWN A VOLUME UP A B MIC OFF B C C D UP D E DOWN E F LEFT F TOUCH DETECT RIGHT LOW BATT D12001 rev

14 2.4 Monitor(s) The TANDBERG 6000 is supplied with either a PAL or NTSC monitor(s) depending on the country of use. The standard monitor is 33 Colour (PAL) and 32 Colour (NTSC). Other monitors are available upon request. The system may also be supplied with XGA monitors (optional). In this case an Intelligent VGA <-> S-Video switching cable will be supplied for the second monitor. It must be connected to Dataport 1 and will switch to the VGA cable (thus XGA resolution on dual monitor) when PC is selected and S-Video cable (xcif resolution on dual monitor) when e.g. Main Camera is selected. 2.5 Cabinet The TANDBERG 6000 Cabinet is equipped with anti-skid material on the top so that the monitor does not slide. The room in the Cabinet can easily contain the size of a standard desktop PC and a VCR. By removing the rear panel of the Cabinet, this allows quick and easy access to all the ports of the TANDBERG 6000 Codec, the TANDBERG Natural Audio Module and provides quick assembly and disassembly of the mentioned parts. The XGA access plug ( PC presenter ) is located on the front bottom of the Cabinet and accessed by opening the Cabinet door. To upgrade to a dual system, the single top-plate must be removed before the dual top-plate is installed. 2.6 TANDBERG Natural Audio Module (NAM II) The NAM II is a specially designed TANDBERG audio module that provides the user with unique audio qualities. The Natural Audio Module II consists of the following: Three way active speaker system with active crossover 2 x 130mm bass speaker elements 1 x 25mm tweeter Audio amplifier 6 : 3 x 50 Watts The Natural Audio Module is placed inside the Cabinet of the system. 6 The Amplifier has a power selector for 230V or 115V operation which includes a fuse. D12001 rev

15 3. Operation and User Interface The TANDBERG 6000 is normally operated via a hand-held, infrared remote control. TANDBERG 6000's simple and concise multi-coloured on-screen menu ensures that the user will be guided directly to the option or the feature required. The menu system is cursor driven and easy to use. With the intelligent on-screen user feedback the system always ensures the relevant information is given to the user. (E.g. if a channel is lost, the user will see on-screen text message please wait, re-establishing the call ). The Quick Keys (located on the top of the remote) relate to the three blocks at the bottom of the screen. The text on these blocks will change depending on which menu is selected. The user will hear a key tone when entering letters and digits via the remote control. The key tones may be turned off via the system s data port if desired. The TANDBERG 6000 can also be controlled via the data port of the Codec by using a comprehensive set of data port commands 7. This enables the Codec to be controlled by a different user interface, such as an AMX or Crestron system. The web browser can be used as another interface to the TANDBERG By connecting the codec to a LAN the codec may be accessed from a PC located on the same LAN or WAN; allowing the codec s features to be controlled remotely via the web interface. For information on how to operate the system, please see the TANDBERG 6000 User Manual supplied with the system. 7 Please, refer to TANDBERG API (Dataport User Guide) (D11943) D12001 rev

16 4. Codec Interfaces Extensive use of industry standard interfaces and connectors ensure effortless integration of external equipment with the TANDBERG These interfaces can easily be controlled via one of the intuitive user interfaces. 4.1 Network Interfaces and Features Network Interfaces 1 x PRI (RJ-45 Jack) Primary Rate & Leased Line E1/T1 (G.703) Interface up to 2 Mbps 1 x PRI (RJ-45 Jack) Primary Rate (for cascading) 6 x ISDN I.420 (RJ-45 Jack) Basic Rate Interface S/T (2B+D) up to 768 kbps 1 x X.21 / V.35 / RS449 with 1 x RS366 Call Control up to 2 Mbps 1 x Ethernet (RJ-45 Jack) LAN interface (10/100 Mb) up to 3 Mbps The TANDBERG 6000 can easily switch between the different networks on-the-fly, via the user interface. The Codec does not need to reboot after changing the network. The supported networks are: 1 PRI (RJ-45 jack) Primary rate interface & Leased Line E1/T1 (G.703) interface for transmission speeds from 56 kbps to 2 Mbps. 1 PRI (RJ-45 jack) Primary rate interface for transmission speeds from 56 kbps to 2 Mbps (for cascading to other ISDN terminals). 6 x BRI ISDN I.420 (RJ-45 jack) Basic rate interface S/T (2B+D) for up to 768 kbps 1 x X.21 or V.35 / RS449 with RS366 call control for special applications or leased line networks for transmission speeds up to 2 Mbps with automatic detection of bit rates. 1 x Ethernet (RJ-45 jack) Local Area Network interface (10/100Mb) for transmission speeds up to 3 Mbps. D12001 rev

17 4.1.1 PRI E1/T1 ISDN & Leased Line E1/T1 Interface The main RJ-45 jack supports bit rates from 56 kbps up to 2 Mbps (1.5 Mbps PRI/T1) and may be used as a PRI E1/T1 interface or a Leased Line E1/T1 interface. Port number 2 is designed for cascading features when PRI is used PRI E1/T1 ISDN Both the Intelligent Call Management (ch ) and the call status are implemented for PRI. The PRI interface may require an external CSU depending on the network layout. Cable Length in the PRI set-up menu specifies the distance from the Codec to the CSU or last repeater. A CSU should not be required if the system is within 200 m (655 ft) of the last repeater depending on the PRI cable quality. The TANDBERG 6000 supports the PRI protocols AT&T Custom, National ISDN and ETSI (Euro ISDN). Within these protocols the following switches are supported: Switches Protocols supported 4ESS (AT&T) AT&T Custom 5ESS (AT&T) AT&T Custom and National ISDN 8 DMS250 (Nortel) National ISDN DMS100 (Nortel) National ISDN (any switch) ETSI (Euro ISDN) When booting up with PRI selected, the boot-up text will display Waiting for network activation. The boot-up text will not be removed until the PRI line is active or a remote control button is pressed. Several TANDBERG 6000 codecs can be connected to the second PRI port on the TANDBERG 6000 by cascading. Calling systems on the same PRI port is easily done through MSN. Channel hunting is provided for outgoing calls, this feature is normally used when the number of channels needs to be specified and when a National ISDN PRI is used with a non- TANDBERG PRI unit in the cascading chain. The channels outside low and high can then be reserved by other devices. When no value is specified for low or high channel, they default to 1 (low), 23 (high US) and 30 (high Europe). Default search is from high to low. NOTE: TANDBERG recommends always using category 5 cabling. 8 Dependent on the configuration of the switch D12001 rev

18 ISDN Cascading TANDBERG 6000s Your PRI line Line Numbers etc..... CSU or NT PRI 1 TANDBERG 6000 Codec # 1 PRI MSN ON TANDBERG 6000 Codec # 2 PRI 1 PRI MSN ON TANDBERG 6000 Codec # 3 PRI 1 PRI MSN ON.etc Pinout of PRI E1/T1 Interface: 9 Cascading codecs requires a PRI crossover cable, wired as described in this table. PRI Pinout Crossover PRI cable 1 TIP RX 4 2 RING RX 5 4 RING TX 1 5 TIP TX 2 PRI T1 (US only): Network Service Facility (NSF) can be configured as blank/no value (i.e. NSF not used default) or any value between 0 and 31, to describe the service facility on the PRI/T1 line. AT&T Service code Service (ref.1) 0 Disable 1 SDN (Including GSDN) 2 Toll Free Megacom (800) 3 Megacom 6 ACCUNET Switched Digital Service (incl. Switched Digital International) 7 Long Distance Service (incl. AT&T World Connect) 8 International Toll Free Service (1800) 16 AT&T MultiQuest 23 Call Redirection Service Sprint Service code (ref.2) Service MCI Service code (ref.2) Service 0 Reserved 1 VNET/Vision 1 Private Inwatts 3 PRISM1, PRISMII, WATS 3 Outwatts FX 5 DAL 5 TieTrunk Ref. 1: AT&T TR Specification, June 1999, page 76 Ref. 2: Ascend Multiband Plus-T1/PRI, User Documentation, Page The cable of use should be a straight through configuration (the cascaded codecs- if any- should use the PRI crossover configuration). D12001 rev

19 Description of PRI Alarms A PRI cable consists of four wires (two pairs of wires): One pair for Transmit (TX) and one pair for Receive (RX) signals. Red Alarm Red alarm or Loss of signal (LOS) means that there is no signal and thus no framing info received. (This has same effect as pulling out the PRI cable). Yellow Alarm Yellow alarm or Remote Alarm Indicator (RAI) means that the TANDBERG system is receiving framing info, but in this framing info the other side tells the system that it is not reading the system s transmitted framing info. Typically, this may be a broken connector in the TX part of the system PRI cable. This could also indicate weak or noisy signal in the TX part of the system PRI cable. Blue Alarm Blue alarm means that network on the far side of the CSU is unavailable. Scenario: TANDBERG codec is connected via a CSU (i.e. a NT Network Termination ) as follows: Codec cablea CSU cableb Network If a CSU loses framing/sync from the network (example: a bad cable B), it shall no longer send valid framing out on cable A towards the codec. Instead it transmits "Blue Alarm". Seen from a codec receiving blue alarm, this means that the network on the far side of the CSU is unavailable Leased Line E1/T1 The TANDBERG 6000 has implemented the G.703 ITU standard as a network interface- Leased Line E1/T1. When connected to a Leased Line E1 network it is possible to run calls from 64 kbps up to 2 Mbps. When connected to a Leased Line T1 network from 56 kbps up to 1.5 Mbps. There are two Call Control setting for the Leased Line T1/E1: Manual dial mode is supported on Leased Line E1/T1 (i.e. The green connect button must be pressed to initiate a leased line E1/T1 call). The Auto mode is supported on the Leased Line T1/E1. This allows the systems to automatically answer an incoming call. D12001 rev

20 4.1.2 BRI ISDN Interface The TANDBERG 6000 is supplied with the following ISDN BRI Protocols 10 : Euro-ISDN (ETSI) National ISDN AT&T custom Fetex ISDN Japan/Taiwan ISDN Australia ISDN 1-TR6 Italy ISDN Pinout of S/T Interface: 8 3 TX + 4 RX + 5 RX - 6 TX ISDN Subaddress & MSN Subaddress: It is possible to set a subaddress on the TANDBERG system when more than one system share ISDN lines (must be ordered from ISDN provider). From a TANDBERG system dialing with subaddress it is achieved by adding a star plus the subaddress at the end of the ISDN number. E.g. if the ISDN number is and the subaddress is 123, the number to dial into this system will be: *123 Incoming calls without subaddress will be handled by all units on that ISDN line (i.e. all systems would ring). For incoming calls with subaddress, only the unit with matching subaddress will accept the call. MSN: Multiple Subscriber Number is also implemented in the TANDBERG system. If MSN is set to ON, the system will only accept incoming calls to the ISDN numbers programmed in the ISDN settings menu. 10 Available networks correct at time of printing- additional networks may become available. D12001 rev

21 4.1.3 Ethernet / LAN Interface (H.323) 11 The RJ-45 jack for the Ethernet interface (manual or automatic detection of 10/100Mb) supports bit rates from 64 kbps up to 3 Mbps. The ITU-T standard H.323 v4 protocol is implemented in the TANDBERG The following features are specifically relevant for this network interface 12 : Default IP Password New systems or systems that have loaded factory defaults will have a default password TANDBERG all caps and the strict password enabled. Strict password: IP password that is at least 8 characters long and contains both letter and Numbers (alphanumeric). When off all IP password are accepted including blank ones. Command is: strictpassword <on/off> Default is on. The strict password needs to be disabled, via Data Port or Telnet to set a blank or simple password Quality of Service features (QoS) IP precedence IP precedence is a classification of packets from 0 (low priority) to 7 (high priority). The values 6 and 7 are typically reserved for congestion control. IP precedence helps a router select what kind of traffic to prioritise. By means of queue mechanisms, it can select which packets to send first and which to throw away. Some information/traffic is time critical while other is not, and classification is used to differentiate this traffic. One may set separate IP precedence for Signaling, Audio, Video and Data (values 1 7) as well as turn IP precedence off. The auto setting uses the following values for IP precedence: Signalling=6 Audio/Video=4 Data=3 (e.g. FECC commands) This means that in auto, IP precedence has the value 6 (i.e. signaling value) while both audio and video value is 4; data value is 3. Setting the IP precedence value in system s menu is actually setting the signaling value. The audio/video and data values are 11 For information on system IP setting, please see the User Manual. For further info on H.323, please refer to document TANDBERG and IP (D12434) 12 NOTE: E3/B8 software does not support T.120 when running H.323 calls D12001 rev

22 changed accordingly in respect to the signaling value (i.e. audio/video value = - 2; data value = - 3) Diffserv Diffserv is an extension of IP precedence, where one can set values from 0 to 63 (63=Highest priority) IP type of service (TOS) TOS helps a router select a routing path when multiple paths are available. Delay- tells router to minimize delay Throughput- tells router to maximize throughput Reliability- tells router to maximize reliability Cost- tells router to minimize cost Off- Turns TOS off Resource-Reservation Protocol (RSVP) RSVP is a protocol that allows the TANDBERG system to request the network to reserve the bandwidth needed for the IP call Automatic selection of H.323 or H.320 outgoing calls IP address or E.164 number dialling. Automatic selection based on network address type or predefined prefixes IP adaptive bandwidth management The codec never produces more traffic than needed, for better utilization of network resources. Most of the data sent in a videoconference is video data. Thus, by incorporating smart video algorithms, the codec sends no more video data than necessary. Little movement in the picture gives low bit rate; while a lot of movement gives higher bit rate. The codec regulates outgoing and incoming media bit rates by means of flow control signalling. An example of this is automatic adjustment of total bandwidth used when sites are added in a MultiSite call or when DuoVideo is added Gatekeeper authentication When set to auto, this feature automatically locates a gatekeeper on the same subnet and registers the system using the E.164 alias. D12001 rev

23 If the gatekeeper supports alternate gatekeepers, the TANDBERG system will receive a primary and secondary gatekeeper address. If the primary gatekeeper fails, the system will register to the secondary gatekeeper that was declared by the primary gatekeeper. 13 Re-registration at the gatekeeper will occur regularly and automatically Registration to Call Manager The TANDBERG systems support registration to a CallManager. It is only possible to register the TANDBERG system to a CallManager when the gatekeeper registration is disabled, and the CallManager is configured with a H.323 client that matches the IP address and the E.164/phone number of the TANDBERG system. When the Use Gatekeeper is set to off, enable Use CallManager by setting it to On, and set the IP address of the CallManager in the CallManager IP field. The endpoint will now register to the CallManger The registration of a H.323 client in CallManager is supported on the CallManager (CCM) 4.0 software and forward. Note: CallManager does not support features like Duo Video, H.264 and encryption. A TANDBERG endpoint registered to CallManager will loose these capabilities. There is no confirmation on the TANDBERG system that it is registered to a CallManager Configuring an H.323 client on the CallManager 4.0 To configure the CallManager with an H.323 client, log on to the administration web interface and go to the phone configuration page. The Phone configuration page is located on: device (top menu) -> Add a New device -> Phone -> H.323 Client. In the phone configuration page type the IP address of the TANDBERG system in the Device name field, select device pool and push the insert button. A pop-up box will now appear on the screen and ask you if you would like to configure the directory number. Push the ok button. You should now see the Directory Number Configuration WEB page. Enter the E.164/phone number of your TANDBERG system in the Directory number field, and in the Forward and Pickup Settings enter the time of No Answer Ring Duration. The time selected has to have a value from 1 to 300 seconds. Push the Add button to update the CallManager with the directory number settings. You have now configured the CallManager with a H.323 client and should be able to register the TANDBERG system to it. When the TANDBERG system is registered to a CallManager, it will be possible to place and receive calls from this system to any other video and voice systems that are registered on the same CallManager. 13 alternate gatekeeper supported in the Cisco MCM Sw 12.2 gatekeeper D12001 rev

24 H.323 ID H.323 ID is a feature allowing text names instead of E.164 numbers to be dialled. The TANDBERG system will use the System Name as its H.323 ID. Even though one cannot dial out with an H.323 ID via the remote control one can use the web interface or the dataport. Other systems can also dial in using the H.323 ID Dynamic playout buffering Shapes the incoming data for better playout and re-sequencing of packets delivered out of order. This ensures better lip sync Asymmetrical media capabilities Audio and video protocols can be fully asymmetrical. E.g., the TANDBERG system can send H.263 and receive H.261 at the same time Diagnostic tools for IP Q.931 To show Q.931 trace during a call you need to issue the command syslog on. One can get traces for RAS, Q.931 and H.245 with this command. It is a complex trace and requires an extensive knowledge in H.323 signalling to be understood. Ping Traceroute Ping is used to see if the codec is able to reach a specific IP-address, using a mechanism in IP called ICMP. If a codec is unable to register to its gatekeeper, or if it is unable to dial a specific endpoint, one can use ping to see if there is at least an IP-route to the gatekeeper or to the endpoint. In case you have problems, one would first ping the default gateway, then the gatekeeper, and then the other endpoint. Traceroute does exactly that; it traces the route an IP-packet takes to reach its destination and displays all router hops. Traceroute is very useful for seeing exactly where there is a routing-problem in the IP-network, and for checking where transport-delay is introduced NAT support Network Address Translation is implemented to support small/home office applications requiring a single endpoint behind a NAT router. NAT also supports the use of a gatekeeper outside the NAT router Latency & Jitter Latency is defined as the time between a node sending a message and receipt of the message by another node. The TANDBERG systems can handle any value of latencyhowever, the higher the latency, the longer the delay in video and audio. This may lead to conferences with undesirable delays causing participants to interrupt and speak over each other. D12001 rev

25 Jitter is defined as the difference in latency. Where constant latency simply produces delays in audio and video, jitter can have a more adverse effect (e.g. the video may be blocky ). Jitter causes packets to arrive out of order or at the wrong times, which again leads to packet loss. TANDBERG can manage packets with jitter up to 100ms. If excessive packet loss is detected, the TANDBERG systems will downspeed the connection until acceptable packet loss is achieved Layer 4 Ports used in H.323 calls The layer 4 ports used by the system in a H.323 call can be defined as follows: Dynamic: The ports are allocated at random from 2048 to Static: Will use the predefinded layer 4 ports listed in the tables below. Point-to-point + Duo Video Function Port Type Gatekeeper Discovery (RAS) 1719 UDP Q.931 Call Setup 1720 TCP H.245 Range TCP Video Range UDP Audio Range UDP Data/FECC Range UDP MultiSite + Duo Video Function Port Type Gatekeeper Discovery (RAS) 1719 UDP Q.931 Call Setup 1720 TCP H.245* Range TCP Video Range UDP Audio Range UDP Data/FECC Range UDP (*) Note: While using MultiSite, if a site is disconnected and reconnected without terminating the entire conference, the next site to be connected will have a H.245 port outside of the specified range. If this functionality is required through a firewall, the range of TCP ports can be extended past However, if a site is disconnected and reconnected, without ending the conference enough times one can quickly end up outside of this range again IP packet sizes Audio The system automatically selects the most favorable IP packet size for audio. Depending on the network conditions, the system will send 20 ms or 40 ms of audio in each packet, thus: G /320 bytes per packet G /80 bytes per packet G /320 bytes per packet D12001 rev

26 Video The system is sending maximum 1450 bytes of video per packet. Note: In addition, the system needs to add the following header information for each of the audio and video packets above: 20 bytes IP-header, 8 bytes UDP-header and 12 bytes RTP-header (i.e. 40 bytes in total). Packet loss: Packet loss is displayed in percentage (%) in the Call Status menu of the system. The number shown is the average of audio- and video- packets that are lost during the last 2 seconds Intelligent Packet Loss Recovery (IPLR) IPLR is an ITU standard based packet loss compensation for H.323 that improves received and transmitted video to/from the TANDBERG system. IPLR supports all video protocols and resolutions that TANDBERG systems already have implemented and is compatible with all terminals, Gateways and MCUs. IPLR is a special algorithm developed at TANDBERG that will make efforts to reconstruct the lost packets and reduce the visual effects caused by packet losses. In addition, IPLR will make transmitted data more resilient to lossy networks. IPLR transmission functionality can be disabled and re-enabled by a dataport command. 14 It is enabled by default. IPLR will automatically start when packet loss is detected on the H.323 network. (See also chapter on IP downspeeding ) IP Conflict Warning The TANDBERG system automatically checks whether its IP address has been assigned to another system on the same IP network. In case of double address assignment, the TANDBERG system will display an IP address conflict warning to the user. Once a detected IP address conflict has been resolved, the TANDBERG system can be operated without reboot. 14 refer also to TANDBERG API (Dataport User Guide) (D11943) D12001 rev

27 4.1.4 NET Interface The NET interface provides several network protocols to be used with terminal adapters in special applications. The protocols supported are: Network protocols V.35 RS-449 RS-530 X.21 Dialling protocols/call control RS-366 Leased line Data triggered Manual mode The above protocols are used for connection to equipment supporting special networks such as: Switched 56/64 kbps Leased line 56/64 kbps X.21 Leased line (dedicated) T1/PRI Circuit switched (dial up) T1/PRI E1 T1 LAN ATM The different configurations are described in the document Connecting external networks (D12096) and in special application notes available on the TANDBERG Technical documentation CD-ROM or by contacting your TANDBERG representative. A combination of V.35 and IP sites in a MultiSite call is possible under the following prerequisites: A V.35 party must be called first No ISDN parties can be part of the conference. D12001 rev

28 4.1.5 Streaming 15 TANDBERG 6000 supports streaming of H.261 video and G.711 (µ-law) audio both when the system is in a call or outside a call. When inside a call, audio from both sides is streamed together with the video from the site that is on air (i.e. voice switched). It is also possible to force the video from either local or far end to be shown constantly. The streaming video may be displayed on the codec s web page. The streamed video/audio can be viewed on most free viewers, but TANDBERG recommends that Apple Quick Time is used. Streaming video rates available are: 16, 32, 64, 128, 192, 256 or 320 kbps. Streaming audio rate is fixed to 64 kbps. The streaming format RTP (over UDP) is supported on the TANDBERG system. For security purposes, streaming is disabled by default and may only be enabled from the main menu or the data port. However, start/stop and configurations can be set via web or telnet. A Streaming password may be set in order to prevent unwanted users streaming from the system. Streaming Chat: When streaming is viewed from the systems web page, it is possible to send messages to the system. The messages are displayed on the system s monitor Automatic announcement of Streaming The TANDBERG 6000 can be used in a Cisco IP/TV environment. The system periodically transmits a Session Announcement Protocol (SAP) message to inform clients where the streaming can be found. 15 Active streaming disables MultiSite and Duo Video. For further info on Streaming, please refer to the User Manual and the documents TANDBERG on Streaming (D12408 and D11934) D12001 rev

29 4.1.6 Intelligent Call Management (ICM) By using TANDBERG's Intelligent Call Management (ICM), calls can be made from data rates of 56 kbps up to 2 Mbps via ISDN networks (3 Mbps on IP). ICM is a highly sophisticated feature provided by the TANDBERG 6000 that makes the connection between two sites more reliable and safe. If the ISDN network drops channels during a call, the conference will not shut down but adjust to the remaining number of available channels 16. This ability is called Downspeeding and is in accordance to the BONDING Mode 1 standard. ISDN Downspeeding will be started when one of the following actions occurs: 1. Fallback to 2xH221 call when no BONDING framing is found 2. Non-matching number of channels (N) during BONDING setup (e.g. N=4 on site A, N=6 on site B) 3. Downspeeding during call setup caused by a channel that won't connect 4. Disconnect and downspeed if a channel won't sync 5. Downspeeding when detecting B-channels that are looped 6. Downspeeding if a channel drops during the call The TANDBERG system will also start the BONDING synchronization procedure if there is a long fatal failure situation: 7. Extended loss of H221 framing 8. Continuous BCH framing error in the video stream. If then a channel fails to sync, it will be disconnected (as mentioned in 4.) Downspeeding on IP: The TANDBERG system has a similar way of downspeeding on IP, described as follows: a) If system gets more than 10% packet loss during the last 2 seconds, it will go down 64 kbps. (Ex. Call set up on 768 kbps and the above packet loss occurs, the new callrate will be 768 kbps 64 kbps = 704 kbps). b) If after the next 2 seconds, there is still more than 10% packet loss, system will downspeed 64 kbps again. c) The above will happen until call rate of 192 kbps is reached. d) If still same packet loss at 192 kbps the system will upspeed back to original call rate (since when in this situation, one may assume that the packet loss is due to other reasons and not the H.323 call itself). Different from the ISDN downspeeding, the system will not change Audio and Video algorithms during the downspeeding of an IP call. (See also chapter on IPLR). 16 Depending on the capability of the remote system to support downspeeding. D12001 rev

30 4.1.7 Network Profiles The TANDBERG 6000 has 3 fixed and 3 programmable Name, Prefix and Protocol settings that may be used when dialling. The system will automatically make an H.320 call if the dialled number is an ISDN number or an H.323 call if an IP address is dialled. H.323 will also be selected if number prefix is matching the H.323 prefix and the system is registered to a gatekeeper Encryption The TANDBERG system has built-in encryption of audio, video and data for both H.323 (based on ITU standard H.235) and H.320 (based on ITU standard H.233 and H.234) calls. This feature supports DuoVideo, FECC, T , and point-to-point calls as well as MultiSite calls up to total 768 kbps. The encryption algorithms used in the TANDBERG system are: - The Data Encryption Standard (DES) with a 56 bit session key - The Advanced Encryption Standard (AES) with a 128 bit session key Although there are small differences between H.323 and H.320, a typical set-up of a secure call can be defined as follows: 1. Establishment of a common shared secret and selection of an encryption algorithm. 2. Exchange of the keys according to the common shared secret and the selected encryption algorithm. 3. Start the encryption. The establishment of the common shared secret is done through the computation of the Diffie- Hellman (DH) algorithm. The DH method uses prime numbers of 512 bits length for DES and 1024 bits for AES. The shared secret is then used as a key for the selected encryption algorithm, which encrypts "the session keys". When the session keys are collected by the remote end, encryption of the audio, video and data channels can start. 3 sites 4 sites Encryption algorithms Total MS bandwidth AES or DES Encryption AES or DES Encryption disabled AES or DES Encryption disabled The above table shows type of network and maximum number of sites with the available Encryption algorithms that may be used. 17 T.120 not supported on H.323 point to point calls nor in MultiSite calls D12001 rev

31 In a MultiSite call, encrypted and non-encrypted connections cannot be mixed. Consequently, all systems in a MultiSite call need to support encryption in order for the conference to be encrypted. If one endpoint in a MultiSite call does not support encryption, the MultiSite host will turn off encryption with all other endpoints as well. D12001 rev

32 4.2 Aggregation Standards ISDN Aggregation H.221 Frame Structure from 64 (56 * ) kbps to 128 kbps ISO BONDING, Mode 1 from 64 (56 * ) kbps to 2 Mbps BONDING ISO 13871, BONDING Mode 1 for bit rates from 56 kbps up to 2 Mbps (1 to 30 channels). The TANDBERG system can handle relative delay difference between B-channels of up to 0.5 second (i.e. to compensate for different routing of channels). Example: Channel 1 is delayed 250 ms, channel 2 is delayed 500 ms and channel 3 is delayed 330 ms. The relative delay difference is then (max. min.), thus in this case it would be 500 ms 250 ms = 250 ms (0.250 sec). If delay difference is more than 0.5 seconds in a call, the TANDBERG system will display Corrupted data received and try to resynchronize the call. Note: Delay difference will vary depending on the different service providers involved in the call. The following are the standard bandwidths on H.320: 30ch H.221 For bit rates from 56 kbps up to 128 kbps (1 or 2 channels). The maximum relative delay difference between the 2 B-channels is 0.6 second. The system will only select H.221 if the far end does not support BONDING or when two ISDN numbers are dialled. Only 1 x 64 kbps H.221 support when External Network is used. D12001 rev

33 4.2.3 Encoding delay H.320: The latency in a point-to-point call using TANDBERG systems on H.320 (ISDN) varies between ms depending on the network performance. H.323: The latency in a point-to-point call using TANDBERG systems on H.323 (IP) varies between ms. (An additional 100ms have to be added for playout buffering). NOTE, the total delay of a call will be as follows: Encoding delay + Max. network delay + Decoding delay Network delay (and Delay difference) will vary depending on the different service providers involved in the call. Decoding delay is typically 1/3 of the encoding delay. 4.3 Data Interface/Application Programmable Interface (API) Data Standards T.120 Data Communication Protocol Data TANDBERG Dynamic Data Channel (DDC) Modem Standard modem commands Auto/VISCA For control of camera connected to data port 2 Data Interfaces 2 x Data ports, RS-232 (9-pin D-sub), Up to Baud for Data & Control The dataports on TANDBERG 6000 are implemented as Digital Circuit Terminating Equipment (DCE). The pin-outs for both data ports are the same except pin no. 4, see note below. The connectors used are female 9-pin D-subs. The TANDBERG main camera is normally connected to Dataport 2 On Data port 2, pin number 4 provides 12V DC / 1 Amps to the main camera Signal Name Direction Pin number Carrier detect, CD From DCE 1 Receive data, RXD From DCE 2 Transmit data, TXD To DCE 3 Data terminal ready, DTR From DCE 4 Signal ground, GND 5 Data set ready, DSR From DCE 6 Ready to send, RTS To DCE 7 Clear to send, CTS From DCE 8 Ring indicator, RI From DCE 9 D12001 rev