[nsp] PRI using a Nortel QPC757 DCHI and Cisco NM-HDV/VWIC-1MFT-T1

[Terry Grace]

We're using mgcp. Don't have the qsig package on the PBX.

-----Original Message-----
From: Voll, Scott [mailto:Scott.Voll at wesd.org] 
Sent: Friday, September 19, 2003 11:10 AM
To: tgrace; cisco-nsp at puck.nether.net; cisco-voip at puck.nether.net
Subject: RE: [nsp] PRI using a Nortel QPC757 DCHI and Cisco
NM-HDV/VWIC-1MFT-T1


What are you running, H323,SIP,MGCP??  Can you use Qsig?  

--Scott

-----Original Message-----
From: tgrace [mailto:tgrace at tgrace.com] 
Sent: Thursday, September 18, 2003 7:51 PM
To: cisco-nsp at puck.nether.net; cisco-voip at puck.nether.net
Subject: [nsp] PRI using a Nortel QPC757 DCHI and Cisco NM-HDV/VWIC-1MFT-T1

I'm having difficulty keepinga PRI TIE line up between our 81C and a Cisco
2621XM router. The PRI seems to go down shortly after a disconnect from the
first incoming call to the router from the PBX or PSTN or after a dozen
quick succession calls to PBX extensions. When this happens I can see the
router TX'ing SABME's but getting no response from the PBX. At other times
the link will be up but I will get an INFO message back from the PBX that
the "identified channel does not exist" when I try to place an outbound
call. There also seems to be some issue with disconnects with 5ESS. On a
number of occassions my Nortel phone continued ringing after going onhook on
the Cisco phone. This isn't consistent and happens perhaps 1 out 10 calls.

Initially tried using the DMS100 protocol with the PBX as net and the router
as USR. Also did the reverse and then tried configuring both as 5ESS. Same
type of problems.

Anyone ever run into something like this?


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