here is one I haven't run across. I have a customer with a partial T-1. Of the 12 channels, 4 are ground start, and the other 8 are two way DIDs. The two-ways are fine. If the one of the operators selects one of the ground start trunks to dial out on, she can't always break dial tone. It is about 50/50. The provider is saying it is our T-1, I am saying it is them. After I go out today and swap the T-1 card and I still have the same issue, is there anything else that could be on the equipment side?