I have a very strange but reproducable problem across several similar MPLS ckts, ISR's and IOS versions.The problem is affecting voice quality in general.SetupCisco 2821 - 12.4.3a - same memory and hardware config on each ISRPE ----  MPLS T1 ---- CE ...

We have a SIP service using C2851 GW with CUBE. Our outbound calls to the provider must have external mask of our DID range ex 999888XXXX. Problem when turning on forward to outside number - is that the calling number is used and the provider rejec...