NFAS config for 2nd T1

[yorch7301]

Hi everyone
I'm connecting a second T1 attach to the D channel of the 1st T1, is this an NFAS group? what is the right configuration in for the second T1 to do this????

Thanx

 

[lopes1211]

You need to change the signalling group type to NFAS. The DS1 form of the 1st ds1 will remain "isdn-pri", while the 2nd DS1 will be "isdn-ext". Both need to be defined in the signalling group.
-CL

 

[yorch7301]

I did that already, the lines are out-of-service-NE, if I dont have back up D channel, what interfase number should have 1st and 2nd??


Group Number: 5
Associated Signaling? n Max number of NCA TSC: 24
Primary D-Channel: 01B1524 Max number of CA TSC: 24
Secondary D-Channel: Trunk Group for NCA TSC: 1
Trunk Group for Channel Selection: 1
Supplementary Service Protocol: a

Trunk Brd Interface ID Trunk Brd Interface ID
1: 01B15 0 11:
2: 04A18 2 12:
3: 13:
4:

is this OK ???

 

[clausen]

Some vendors reserve interface ID 0 and 1 for the primary and secondary d-channels. The vendor providing your ISDN can tell you what they have the interface ID's set to. However I would try and set the second T-1 (04a18)with B channels to interface ID 1.

Also make sure on the DS-1 form has the second DS-1 set as idsn-ext. You stated it was but it is worth checking again.

If the interface ID do not match the b channles will not come up. Hope this helps

Thanks
Chris