Patent ID: 7760708

Claim:
A method for triggering session initiation protocol (SIP) nodes to include signaling system number seven (SS7) routing information in response messages including information requested by SS7 nodes, the method comprising: (a) receiving, from an SS7 node, a first message having SS7 routing information, wherein the SS7 routing information includes message transfer part level 3 (MTP3) user adaptation layer (M3UA) network appearance information, network group code information, or an SS7 point code, wherein a network appearance parameter, together with a signaling point code, uniquely identifies an SS7 node; (b) generating a corresponding SIP message that includes the SS7 routing information and a parameter instructing a receiving SIP node to include the SS7 routing information in a SIP response message; and (c) forwarding the corresponding SIP message to a remote SIP node.