Specifications

Configuring the Triton T1/E1/PRI Board
6-32 AltiContact Manager Administration Manual
Installing a Channel Service Unit (CSU) to the Triton T1
or T1/E1/PRI Board
The channel service unit is a device used to connect a digital trunk line
coming in from the phone company to the PBX. A CSU can terminate
signals, repeat signals, and respond to loopback commands sent from the
central office. A CSU is mandatory for connecting to AltiGen’s T1/E1
board.
1. Connect the CSU (Adtran model T1 CSU ACE used as an example) to
the T1/PRI or T1/E1PRI board using an RJ-48C or RJ-48X cable.
2. Connect the CSU to the network termination box using an RJ-48C or RJ-
48X cable.
Note: CSUs also are used for line lengths over 75 feet, which helps to
resolve attenuation issues.
Troubleshooting—Common Symptoms
The most common problems when installing T1 or PRI services:
1. The service provider misconfigures your T1/PRI service or terminates
your service improperly.
2. T1 is installed but not turned on because there is no termination device
for a period of time.
3. T1 is turned on but channel is not in service.
AltiGen T1 Socket (RJ-48)
Refer to your CSU manufacturer’s manual for the proper pinout.
Pin 1=Receive Ring (INPUT)
Pin 2=Receive Tip (INPUT)
Pin 4=Transmit Ring (OUTPUT)
Pin 5=Transmit Tip (OUTPUT)