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Appendix 3
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.
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:
NOTE: Cascaded connection:
Remember to program numbers and
MSN. Otherwise, the first codec will
answer all calls.
NOTE: The PRI-line will run the AT&T 4ESS, 5ESS and National ISDN protocols in addition to Euro ISDN (E1).
PRI-interface
Wall
HCS III
*RJ-48C type interface
Adtran
CSU
NET*
CPE*
E1/T1 (2)
E1/T1 (1)
HCS III
E1/T1 (1)
*RJ-48C type interface