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OCS 2007 & Audiocodes Mediant 1000 - calls forwarded to external numbers display incorrect callerID RRS feed

  • Question

  • A small greenfield (no PBX) installation OCS 2007 Exchange 2007 SP1 and an Audiocodes Mediant 1000, 6 ISDN BRIs.

     

    Everything is working fine, and when a user calls an external number from OCS their caller ID appears correctly to the external user. Internal forwarding works fine.

     

    HOWEVER when a call is forwarded to the outside (either immediately, manually, or on non-answer) the forwarded call does not have the callerID that corresponds to the forwarding extension. This means that users getting forwarded calls on cell phones cannot tell that the call is from their own extension, therefore forwarded.

     

    It seems to be always the same mapping (calls forwarded from ext 428 appear to come from ext 414, calls forwarded from 423 appear to come from 417 etc)

     

    Can anyone help me identify where this is happening?

     

     

    Monday, September 1, 2008 3:51 PM