Patent ID: 7085279

Claim:
A method, comprising: sending ATM source identification and an ATM-TDM correlation tag from an ATM source gateway to a telephony signaling control network; receiving at an ATM destination gateway said ATM source identification and said ATM-TDM correlation tag sent from said telephony signaling control network; and sending said ATM-TDM correlation tag from said ATM destination gateway to said ATM source gateway to establish a connection between said ATM destination gateway and said ATM source gateway; sending notification of a call from said telephony signaling control network to said ATM source gateway before said ATM source identification and said ATM-TDM correlation tag are sent to said telephony signaling control network, said notification further identifying which TDM time slot said call will be carried over, said TDM time slot on an trunk line that couples said ATM source gateway to a telephony network; and, after receiving said ATM-TDM correlation tag at said ATM source gateway, reflecting within a mapping table of said ATM source gateway that a VPI/VCI address received in a SETUP message with said ATM-TDM correlation tag corresponds to said TDM time slot.