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  1. a6green

    How to configure AT&T / Avaya Definity G3 incoming ISDN trunk

    Thanks for the information. I was able to resolve the problem just need to add five-digit dialing to the Cisco when calling PBX.
  2. a6green

    How to configure AT&T / Avaya Definity G3 incoming ISDN trunk

    The customer has an AT&T Definity G3 switch/PBX and has configured an incoming ISDN trunk. When calling from a Cisco Call Manager v.12.x we receive a busy. The path is Cisco CM - Media Gateway using MGCP, PRI,B8ZS,ESF, Calling from the PBX into CM no problems good two-way voice all. Again the...

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