TANDBERG MCU Parts list manual

Technical Description of TANDBERG MCU with software version D3
D12925 Rev. 03 1
Technical Description
of TANDBERG MCU
with software version D3
TANDBERG
D12925 Rev. 03

Technical Description of TANDBERG MCU with software version D3
D12925 Rev. 03 2
Table of contents
1INTRODUCTION ............................................................................................................................................ 5
2PRODUCT DESCRIPTION............................................................................................................................ 6
2.1 SOFTWARE VERSIONS..................................................................................................................................... 6
3OPERATION AND USER INTERFACE ...................................................................................................... 6
4MCU INTERFACES & FEATURES ............................................................................................................. 7
4.1 NETWORK INTERFACES AND FEATURES ......................................................................................................... 7
4.1.1 Mixed ISDN and IP Conferences.............................................................................................................. 8
4.1.2 Multiple conferences................................................................................................................................. 8
4.1.3 PRI E1/T1 ISDN ....................................................................................................................................... 8
4.1.3.1 ISDN numbers ................................................................................................................................................. 8
4.1.3.2 PRI E1/T1 ISDN.............................................................................................................................................. 9
4.1.4 Ethernet / LAN Interface (H.323) ........................................................................................................... 11
4.1.4.1 Quality of Service features (QoS) .................................................................................................................. 11
4.1.4.2 Automatic selection of H.323 or H.320 outgoing calls.................................................................................. 12
4.1.4.3 IP adaptive bandwidth management .............................................................................................................. 12
4.1.4.4 Dynamic playout buffering ............................................................................................................................ 12
4.1.4.5 Asymmetrical media capabilities ................................................................................................................... 12
4.1.4.6 Diagnostic tools for IP ................................................................................................................................... 13
4.1.4.7 Latency & Jitter ............................................................................................................................................. 13
4.1.4.8 Layer 4 Ports used in H.323 meetings ........................................................................................................... 13
4.1.4.9 IP packet sizes ............................................................................................................................................... 14
4.1.4.10 Intelligent Packet Loss Recovery (IPLR) ...................................................................................................... 14
4.1.5 LEDs Description ................................................................................................................................... 15
4.1.5.1 Description of PRI Alarms ............................................................................................................................ 15
4.1.6 Intelligent Call Management (ICM) ....................................................................................................... 16
4.1.7 MCU Capacity ........................................................................................................................................ 17
4.1.7.1 MCU Capacity – typical scenarios................................................................................................................. 18
4.1.8 Dial Profiles............................................................................................................................................ 18
4.1.9 Secure Conference (Encryption)............................................................................................................. 19
4.1.9.1 Number of encrypted sites (software option 16+16)...................................................................................... 20
4.1.9.2 Number of encrypted sites (software option 8+8).......................................................................................... 20
4.1.10 MCU control (H.231/H.243).............................................................................................................. 20
4.1.10.1 H.243 Password............................................................................................................................................. 21
4.2 AGGREGATION STANDARDS ......................................................................................................................... 22
4.2.1 BONDING............................................................................................................................................... 22
4.2.1.1 ISDN channel set-up...................................................................................................................................... 22
4.2.2 H.221 ...................................................................................................................................................... 22
4.2.3 H0 ........................................................................................................................................................... 22
4.3 RS232 INTERFACE/APPLICATION PROGRAMMABLE INTERFACE (API) ......................................................... 23
4.3.1 API commands........................................................................................................................................ 23
4.4 VIDEO FEATURES ......................................................................................................................................... 24
4.4.1 Optimised Video Compression................................................................................................................ 24
4.4.1.1 The ITU standard H.263 provides ................................................................................................................. 24
4.4.1.2 The ITU standard H.264 ................................................................................................................................ 24
4.4.2 Video Formats ........................................................................................................................................ 25
4.4.3 Asymmetric Video Formats..................................................................................................................... 25
4.4.4 Best Impression....................................................................................................................................... 25
4.4.4.1 Dynamic/Auto Layout switching ................................................................................................................... 25
4.4.4.2 Automatic Resolution switching.................................................................................................................... 27
4.4.4.3 Video Transcoding ........................................................................................................................................ 28
4.4.5 Duo Video ............................................................................................................................................... 29

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4.4.5.1 Duo Video Interoperability with other vendors ............................................................................................. 29
4.4.6 Custom pictures ...................................................................................................................................... 30
4.5 AUDIO FEATURES ......................................................................................................................................... 31
4.5.1 Audio levelling/ Automatic Gain Control (AGC).................................................................................... 31
4.5.2 Telephone Noise Suppression ................................................................................................................. 31
4.5.3 Custom Sounds........................................................................................................................................ 31
4.5.4 Entry/Exit tones ...................................................................................................................................... 31
4.5.5 Muting of audio ...................................................................................................................................... 31
4.5.6 Telephony................................................................................................................................................ 32
4.5.7 Allow G.728 ............................................................................................................................................ 32
4.5.8 Audio Compression Algorithms .............................................................................................................. 32
4.6 SYSTEM MANAGEMENT................................................................................................................................33
4.6.1 Ethernet/LAN Interface........................................................................................................................... 33
4.6.2 Platform Requirements ........................................................................................................................... 33
4.6.3 Protocols Supported ............................................................................................................................... 34
4.6.4 System Management Functionality......................................................................................................... 34
4.6.4.1 Remote software upgrades using FTP: .......................................................................................................... 34
4.6.4.2 Management using a standard Web-browser: ................................................................................................ 34
4.6.4.3 Management using a standard Telnet-client: ................................................................................................. 35
4.6.4.4 Management using a terminal connected to the RS232 port:......................................................................... 35
4.6.5 Security ................................................................................................................................................... 35
4.6.5.1 HTTPS, TLS/SSL .......................................................................................................................................... 35
4.6.5.2 Disable Services............................................................................................................................................. 36
4.6.5.3 Security Alert................................................................................................................................................. 36
4.6.5.4 Authentication of Remote Management System – (Telnet Challenge) .......................................................... 36
4.6.6 Layer 4 ports used by the system ............................................................................................................ 37
5MISCELLANEOUS FEATURES................................................................................................................. 38
5.1 DISTRIBUTED MCUS.................................................................................................................................... 38
5.2 PHONE BOOK ................................................................................................................................................ 39
5.2.1 Group Entries ......................................................................................................................................... 39
5.3 MAXIMUM MEETING DURATION.................................................................................................................... 39
5.4 FILE SYSTEM (FTP) ...................................................................................................................................... 39
5.4.1 Picture files ............................................................................................................................................. 40
5.4.2 Sound files............................................................................................................................................... 40
5.4.3 Other files ............................................................................................................................................... 40
6ENVIRONMENTAL ISSUES ....................................................................................................................... 41
6.1 TANDBERG’S ENVIRONMENTAL POLICY ................................................................................................... 41
6.2 ENVIRONMENTAL CONSIDERATIONS............................................................................................................. 41
7PRODUCT APPROVALS............................................................................................................................. 42
7.1 CONNECTION OF TELE-TERMINAL EQUIPMENT ............................................................................................ 42
7.2 EMC EMISSION - RADIATED ELECTROMAGNETIC INTERFERENCE................................................................ 42
7.3 EMC IMMUNITY........................................................................................................................................... 42
7.4 ELECTRICAL SAFETY .................................................................................................................................... 42
7.5 EMC IMMUNITY........................................................................................................................................... 42
7.6 NEBS APPROVAL ......................................................................................................................................... 43
8PRODUCT RELIABILITY........................................................................................................................... 43
9TECHNICAL SPECIFICATION OF TANDBERG MCU ......................................................................... 44
9.1 MECHANICAL INFORMATION......................................................................................................................... 44
9.2 PACKAGING .................................................................................................................................................. 44
9.3 OPERATING TEMPERATURE AND HUMIDITY ................................................................................................. 45

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9.4 STORAGE AND TRANSPORT TEMPERATURE .................................................................................................. 45
9.5 SYSTEM POWER CONSUMPTION ................................................................................................................... 45
10 TECHNICAL SPECIFICATION SHEET ...................................................................................................46

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1 Introduction
The TANDBERG MCU is a Multipoint Control Unit designed for connecting up to 16
videoconferencing endpoints and 16 telephones (i.e. 32 sites in total) in the same meeting giving
all participants the same high quality video and/or audio as if they were connected in a point-to-
point meeting.
The MCU implements the ITU-T H.320 standard for video compression and a combination of
H.221 and BONDING for communication on up to 30 ISDN B-channels as well as ITU-T H.323
v.4 standard for communication up to 2 Mbps over IP networks.
The TANDBERG MCU is ‘configurationless’ in the sense that no extensive knowledge is
required for installation and maintenance. All features are included in the MCU – thus, there is
no additional hardware required to use any of the inbuilt features.
All features of the TANDBERG MCU are based on standards set by the ITU-T.
The TANDBERG MCU is best utilised when used together with TANDBERG Management
Suite (TMS) and TANDBERG Scheduler, since they have incorporated features like Graphical
monitoring and Scheduling (Optional).
Major features supported:
•Up to three separate and independent conferences
•Mixed ISDN/IP conferences
•Best Impression (i.e. a variety of picture layouts)
•Custom video formats (e.g. XGA video resolution)
•Full implementation of Downspeeding
•Secure Conference (AES Encryption)
•Duo Video
•Up to 16 videoconferencing endpoints + 16 telephones
•Support for TANDBERG Scheduler and TMS - TANDBERG Management Suite -
(Optional)
•The ITU-T standard H.264 video compression algorithm

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2 Product Description
The TANDBERG MCU is built on a standard 19-inch rack mounted chassis of only 1U in
height.
2.1 Software Versions
There are two software options for the TANDBERG MCU; differentiated by maximum possible
number of sites:
•8 video endpoints + 8 telephone endpoints (i.e. total of 16)
•16 video endpoints + 16 telephone endpoints (i.e. total of 32)
Upgrading from the standard version 8+8 to the optional 16+16 is easily done by entering
Software Option keys inserted e.g. via the MCU’s web interface.
3 Operation and User Interface
The TANDBERG MCU is normally controlled via the web interface, but any user may schedule
meetings on the MCU by using the TANDBERG Management Suite (TMS) or the TANDBERG
Scheduler.
The TANDBERG MCU can also be controlled via Telnet (or the RS232 port) by using a
comprehensive set of API commands1. This enables the MCU to be controlled by a different user
interface, such as an AMX or Crestron control systems.
For information on how to operate the system, please see the documents TANDBERG MCU User
Manual or TANDBERG MCU API supplied with the system.
1Please, refer to document ‘TANDBERG MCU API’ (D12930)

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4 MCU Interfaces & Features
Extensive use of industry standard interfaces and connectors ensure effortless integration of
external equipment with the TANDBERG MCU. These interfaces can easily be controlled via
one of the intuitive user interfaces.
4.1 Network Interfaces and Features
Network Interfaces 4 x PRI (RJ-45 Jack) Primary Rate (G.703) Interfaces
2 x Ethernet (RJ-45 Jack) LAN interfaces (10/100 Mb)2
•4 x PRI (RJ-45 jack) Primary Rate (G.703) interface for transmission speeds from 56
kbps up to 2 Mbps (1.5 Mbps PRI/T1).
•2 x Ethernet (RJ-45 jack) Local Area Network interface (10/100Mb) for transmission
speeds up to 2 Mbps2.
2Only Ethernet port no. 1 is used in software version D3 (Ethernet port no.2 is for future use).
2 LAN ports 4 ISDN PRI ports 1 RS232 port
4 Fans
P
ower connector
+ Power switch

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4.1.1 Mixed ISDN and IP Conferences
The MCU allows for using both ISDN and IP networks in same conference. In addition,
telephone sites (IP or ISDN) can also be included in the same conference.
The maximum IP, ISDN and mixed mode capacity is described in chapter 4.1.7. All conferences
may use the normal features of TANDBERG products such as Duo Video, Encryption etc.
4.1.2 Multiple conferences
The TANDBERG MCU may run three separate videoconferences at the same time. The
meetings will be independent of each other as long as no resource restrictions apply (i.e.
bandwidth/number of sites).
Note: If the MCU is not registered to a Gatekeeper it is only possible to dial into conference
number 1 (via H.323).
4.1.3 PRI E1/T1 ISDN
4.1.3.1 ISDN numbers
The PRI lines connected to the MCU should have at least one number each, to allow dial in
from ISDN.
Number Range Start:
If the PRI line has a range of numbers, the start number should be entered in the Number Range
Start field. The number range must be inclusive. All numbers in the range may be used by the
MCU for callback numbers, so the local ISDN switch must route all of these numbers to the
configured PRI. It is only necessary to enter the digits indicating the range. If the range is
67828669 to 67828699, then just enter 8669. Maximum amount of digits is 24.
Number Range Stop:
The last number in the PRI number range is entered in the Number Range Stop. If the range is
67828669 to 67828699, then just enter 8699.
PRI Trunk Grouping:
When Trunk Grouping is enabled, PRI 2, 3 and 4 will use the same number range as specified
for PRI 1.

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4.1.3.2 PRI E1/T1 ISDN
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 MCU 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 MCU supports the PRI protocols AT&T Custom, National ISDN and ETSI
(Euro ISDN). The AT&T and National protocols will give a total of (23*4) = 92 channels while
the ETSI protocol will give a total of (30*4) = 120 channels.
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 ISDN3
DMS250 (Nortel) National ISDN
DMS100 (Nortel) National ISDN
(Any switch) ETSI (Euro ISDN)
Channel hunting is provided for outgoing calls. The feature is normally used when the number
of channels needs to be specified. 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.
Pinout of PRI E1/T1 Interface:4
NOTE: TANDBERG recommends always using category 5 cabling.
3Dependent on the configuration of the switch
4The cable of use should be a straight through configuration.
PRI Pinout
1 TIP RX
2 RING RX
4 RING TX
5 TIP TX

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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 (ref.1) Service
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 2 800
2 Inwatts 3 PRISM1, PRISMII, WATS
3 Outwatts 4 900
4 FX 5 DAL
5 TieTrunk
Ref. 1: AT&T TR 41459 Specification, June 1999, page 76
Ref. 2: Ascend Multiband Plus-T1/PRI, User Documentation, Page 6-8