Integrating multimedia capabilities with circuit-switched calls

A system for integrating separate circuit-switched voice and packet-switched data sessions, comprising:

• a signaling control point operable to transmit a trigger when a calling user connected to a called user by a circuit-switched call handled by the signaling control point indicates interest in establishing a packet-switched data session with the called user;
• and
• a SIP integration server operable, in response to the trigger, to exchange messages with user agents of the calling user and the called user to establish the packet-switched data session.

A method for integrating separate circuit-switched voice and packet-switched data sessions, the method comprising:

• operating a signaling control point to transmit a trigger when a calling user connected to a called user by a circuit-switched call handled by the signaling control point indicates interest in establishing a packet-switched data session with the called user;
• and
• operating a SIP integration server, in response to the trigger, to exchange messages with user agents of the calling user and the called user to establish the packet-switched data session.