DPC is short for Destination Point Code. It identifies your switch from other SS7 switches and is used to route calls to you as well as establish SS7 service to your switch.

One very simplistic way to think of SS7 is as if you were looking right at a person, face to face.

You see the person (T1 circuit) and you can talk to the person (SS7). If SS7 goes down you can still see each other, but you can't communicate with each other.


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