Patent ID: 7756122

Claim:
An application server (AS) operable to: receive a first Internet Protocol (IP)-based message, initiated by a near-end user, where the message is associated with a public identity and user profiles of a far-end user; send a location determination message to an element of a non-IP network based on the received IP protocol-based message and profiles; receive a first routing value associated with the far-end user; generate a modified, IP protocol-based message based on the first routing value; and send the modified message to an element of an IP network to eventually enable a signaling link to be established between the near-end user and the far-end user, wherein the IP network is selected from at least the group consisting of an Internet-based network, a 3GPP, all-IP network and a 3GPP2, all-IP network, and the non-IP network is selected from at least the group consisting of circuit-switched, landline network, an ANSI-41 network, a wireless LAN network, a Global System for Mobile Communications network and a Universal Mobile Telecommunications System network.