Patent ID: 7142511

Claim:
A telecommunication system comprising: an ATM core network; at least one media gateway (MGW), wherein the MGW is connected on its network side to the ATM core network and wherein a termination on the other side of the MGW is done on an ATM interface comprised of Permanent Virtual Connections (PVCs) that are configured to emulate a standardized TDM interface; a remote access server (RAS) wherein said MGW is connected on said other side to said RAS, said RAS being a device for interconnecting said ATM core network to an access network using said ATM interface comprised of the PVCs that are configured to emulate said standardized TDM interface, in order to obtain seamless connectivity between said access network and said ATM core network; wherein the PVCs are pre-configured in both the MGW and RAS such that Channel Identity values, which are referenced in an access call control protocol are mapped to PVC identities; and a telephony server (TeS) for providing call control wherein a call control message sent between said TeS and said RAS includes a Channel Identifier, and the RAS is pre-configured to associate the Channel Identifier with the PVC identities used by the MGW.