Absolutely. The only way to get something like this resolved is to get all the carriers involved. Hard to point fingers when everyone is participating.
Larry/David,I spent many years as the Tier 4 (Engineering Support) for a Service Provider. These issues can be located AND resolved with simple persistence.There are two types of DTMF in this scenario. "Out of Band" and "In Band". OOB is the RFC vers...
David,I know this was a long time ago. Did the issue get resolved. If not, please let me know and I will let you know how I troubleshoot and resolved this same problem.
