AltiGen comm ACM 5.1 Installing a Channel Service Unit CSU, Troubleshooting T1/E1-Common Symptoms

Chapter 11: Board Configuration

If AltiServ detects the Calling Number is not accepted by the Carrier, it will always send the number you enter in the text box at the lower right side of the dialog box as the Calling Number. Enter an appropriate Calling Number in this box.

Installing a Channel Service Unit (CSU)

This section discusses installing a CSU to the Triton T1 or T1/E1 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.

AltiGen T1 Socket (RJ-48)

Pin 1=Receive Ring (INPUT) Pin 2=Receive Tip (INPUT) Pin 4=Transmit Ring (OUTPUT) Pin 5=Transmit Tip (OUTPUT)

Refer to your CSU manufacturer’s manual for the proper pinout.

Note: CSUs also are used for line lengths over 75 feet, which helps to resolve attenuation issues.

Troubleshooting T1/E1—Common Symptoms

The most common problems when installing T1 CAS or T1 PRI services:

1.The service provider misconfigures your T1 CAS/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.

AltiWare provides basic troubleshooting information in the T1 Span Configuration window, described in “T1 and E1 Configuration” on page 129.

AltiWare ACM 5.1 Administration Manual 141