CSU and Line Side T1?

[des0906]

Can you use a 120A CSU for a Line Side T1? We have a IVR system we are installing, and want to make use of existing parts and pieces. We would like to avoid order additional parts #102938.

 

[98Converter]

I used 120's to connect to IVRs, and CTI servers. Seemed to work fine...

We are what we repeatedly do. Excellence, then, is not an act but a habit. ARISTOTLE 384-322 B.C.

 

[des0906]

Can I use a straight-through with the 120, or do I have to use a cross-over? We have ran continuity testing on the cable from end-to-end, and verified the terminations, but we are unable to get the NMS AG4040 card to recognize the PBX output.

 

[DAVIDPAYNE]

What kind of card are you using in the IVR, and how do you have the DS-1 setup?

 

[des0906]

Thanks for your replay, David. It is an NMS AG4040 card in the IVR. The DS1 is configured as thus:

DS1 CIRCUIT PACK
Location: 03B04 Name: IVR Test2
Bit Rate: 1.544 Line Coding: ami-zcs
Line Compensation: 2 Framing Mode: d4
Signaling Mode: robbed-bit
Idle Code: 11111111
Slip Detection? n Near-end CSU Type: other

 

[DAVIDPAYNE]

You might want to try changing the Near-end CSU type: to integrated.

I have it setup for my IVR's both ways. with CSU's and without.

 

[des0906]

Good thought, but it didn't work for me.

 

[4merAvaya]

You don't need a CSU for line-side applications unless the distance is over 600 feet. The DS-1 board in the PBX should be a TN767C or later, a TN464F or later, or a TN2313.

 

[des0906]

We resolved the issue late yesterday, and it turned out to be that the cross-over diagram we were using was for RJ-45, not RJ-48 on a T1. It works fine with the 120A, as long as you have the correct cross-over cable configuration.