Call control element constructing a session initiation protocol (sip) message including provisions for incorporating address related information of public switched telephone network (pstn) based devices

A system of forming a multi-media communication path between a calling communication device that operates using a first protocol and a destination communication device that operates using a second protocol, comprising:

• means for receiving a request for a multi-media service at a call control element of a multi-media provider system;
• means for processing the request at the call control element for generating a signaling protocol message;
• and
• means for sending the signaling protocol message to the destination communication device to form the multi-media communication path between the calling communication device and the destination communication device, wherein the destination communication device comprises a circuit based communication device and wherein the signaling protocol message includes a header portion, a first body portion and a second body portion separate from and different than the header portion and the first body portion, wherein the second body portion includes predetermined address specific information associated with the destination communication device.