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TANDBERG Videoconferencing System
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Appendices
Appendix 3: Connecting the system to PRI/T1
Using CSU adapter
Connecting the system to the ISDN network via the E1/T1-interface using an Adtran T1 ESF CSU ACE will allow up to 1.54
Mbps transmission. The E1/T1-interface must be connected to a CSU approved according to IEC 60950, UL 1950 or
equivalent standard.
NOTE: The PRI-line will run the AT&T 4ESS, 5ESS and National ISDN protocols in addition to Euro ISDN (E1).
ISDN E1/T1 (1)
Adtran
CSU
PRI-interface
Wall
Codec
Connecting to Adtran T1 ESF CSU ACE
Connect the PRI cable from the Codec to the input marked CPE on the Adtran CSU (straight through category 5 cable is
recommended). Connect to the network via the NET connector on the Adtran CSU. When two Codecs are cascaded,
connect the second Codec to the E1/T1 port 2 on the first Codec using a T1 crossover cable.
Configuration of the system
Press MENU on the remote control. Select ‘Terminal Settings’, ‘Network’.
Select ‘Current Network: PRI’ and specify your PRI number, max. channels, cable length (between Codec and CSU) and
switch type:
ISDN-PRI Settings
Number: ____________________
Max Channels: |||||| 12
Cable Length 1: |—— 0-133 ft
Cable Length 2: |—— 0-133 ft
PRI Switch Type
Channel Hunting
Advanced ISDN Settings
Previous Menu
NET
CPE
*RJ-48C type interface
ISDN E1/T1 (1)
Codec
ISDN E1/T1 (2)
CASCADED CONNECTION: REMEMBER TO
PROGRAM
NUMBERS AND MSN. OTHERWISE,
THE FIRST CODEC WILL ANSWER ALL CALLS.
Configuration of Adtran T1 ESF CSU ACE
Enter ‘2)CONFIG’ menu using SCROLL and ENTER buttons.
- Enter ‘3)TERMINAL’ menu. Check ‘1)FORMAT:ESF’, ‘2)CODE: B8ZS’ , ‘3)SET LBO: 0-133’
(Corresponding to ‘Cable Length’ setting on the Codec.
- Go to main menu and enter ‘1)NETWORK’ menu. ‘7)SET LBO: 0.0 (According to information from Telco).
- Also, other network parameters should be set according to information from your Telco.
NOTE