SIP calling for P2P
SIP is a signalling protocol which routes signalling messages via SIP proxies. These proxies are application level server components to which the initiator sends the SIP message. The proxy knows how to forward the request to the destination either directly or through other proxies. More details on thus can be found in RFC3261. In such an environment the proxy can become a bottleneck and various issues like control, security, single point of failure, deployment and complexity arise.
To mitigate such risks a peer-to-peer network is used. In a P2P network there is no control and every node participate equally as every other node in the network. Issues of resiliency and consistency arise in such a P2P network. The P2P networks in the domain of SIP have special importance in that they are self managed and can be easily deployed. Happy birthday P2PSIP
Questions arise
- How do we improve SIP ?
- What will happen to the SIP proxies ?
- How do you make SIP a P2P ?
- Is SIP not hybrid pure system ?