SIP peering based on distance vector algorithm

Abstract

SIP based VoIP is a key enabling technology for the migration of circuit-switched PSTN architecture to packet-based networks. But the real world did not choose to implement and deploy SIP as initially envisioned by their inventors. The reason is ascribed to SIP spam and accounting problems. The root of this problem is SIP is an Email like protocol, no trust relationship between SIP communication partners. SIP peering is a subject of how to construct trust relationship among SIP Service Providers. And in peering scenario, routing is the most important issues. We introduce distance vector algorithm into SIP routing area, by this approach, SIP service providers can dynamically construct trust relationship with each other, can also lower costs, improve call quality and offer new IP-enabled services to their enterprise customers.