Caller ID issue

[Ski123]

I have a situation where a Nortel PBX was replaced with a Cisco Call Manager. They are still using the same PRI PSTN circuits for LD calling. The issue is that when people call from the CM to a particular Nortel the caller ID number does not go through to the Nortel. This worked before when the system was a Nortel using the same PRI's. The strange thing is that when calls are made from the CM to another Cisco site or to a cell phone the caller ID works.I also tried calling from a different CM to the same Nortel and we do see the caller ID. I suspect a setting on the CM in question but don't no which one.

 

[MitelInMyBlood]

If the intermachine trunks are QSIG, the downstream machine (last in the chain) whether it is Cisco or Nortel (or Mitel) will not see callerID. Nature of the beast.

We stumbled into this during migration from Mitel to Cisco and in retrospect realize now that we should have moved the PRIs first instead of last. By moving the PRIs last our users lost callerID upon moving to the new PBX. Had we moved the PRIs first, the users on the Mitel would have lost callerID but would then re-gain it upon being migrated to the new system. As it was they regained caller ID only near the end of the migration when we finally swung the PRIs to the Cisco.

Original MUG/NAMU Charter Member