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Hi Guys,  Thank you very much for your help.  Case is solved.  Nortel side changed the DTI card for a PRI enabled one and I configured Cisco side like this: isdn switch-type primary-qsigisdn voice-call-failure 0 voice service pots supplementary-service qsig call-forward controller E1 0/3/0 framing NO-CRC4 pri-group timeslots 1-31 description E1 desde PBX para Extensiones dial-peer voice 4000 pots description Extensiones PBX Nortel destination-pattern 4[23].. direct-inward-dial port 0/3/0:15 forward-digits all no sip-register!dial-peer voice 4700 pots destination-pattern 47[01234]. direct-inward-dial port 0/3/0:15 forward-digits all no sip-register I will ask Nortel guy to send me a copy of configuration from Nortel and upload it. Thanks,Sergio.

Hi Jeremy, Actually Im running CUCME version 8.x on 2900 router.  Thanks for the highlights, I will give it a try with dms100

The Cisco Interoperability Portal will get you where you need to go.  Just a side-note with my recent experience with the Nortel CS1000M running V3 software the Nortel PBX cannot do NI2 as a Tie Line for OnNet calling.  You can however do a DMS100 as a Tie Line for OnNet calling which will give you better Caller ID services.  If you can I would suggest a QSIG PRI but that requires an MGCP gateway so if you are running any integrations that do not support MGCP youll want to go the DMS100 route.  Also, I would recommend integrating with SIP into CUCM if you are on a release higher than 6.1.

Sergio, Check out the Interop website for guides on how to integrate with the Nortel PBX. http://www.cisco.com/en/US/solutions/ns ... bd0e4.html The guides provide guidance on how to configure both the gateway and PBX. -Felipe

Just configure cisco network side, provide clock, and you will be all set. Please remember to rate useful posts clicking on the stars below.