I have an Option 81C Release 23 and I am trying to transfer calls offnet. I am able to perform a cold transfer but the warm transfer does not go through. The customer is making a call out of the system and then calling another location. They are trying to tranfer the customer to another location without having to stay connected. They are using T1 circuits to dial out on. I have already checked the TNB of the channels to make sure that SUPN is turned on. Does anyone have any ideas?