Patent ID: 7411944

Claim:
A system comprising: a call control entity comprising: a Session Initiation Protocol (SIP) proxy device to: receive a first SIP invite request for a first called party, the first SIP invite request being associated with a first intelligent network service, send a second SIP invite request to a location manager in response to receiving the first SIP invite request that is associated with a first intelligent network service, receive, from the location manager, a first address for the first called party at a first egress Internet Protocol (IP) telephony device, and establish a first telephone call using the received first address, and an H.323 device to: receive an H.323 call establishment message for a second called party, the H.323 call establishment message being associated with a second intelligent network service, send a third SIP invite request to the location manager in response to receiving the H.323 call establishment message that is associated with a second intelligent network service, receive, from the location manager, a second address for the second called party at a second egress IP telephony device, and establish a second telephone call using the received second address.