Interconnecting P2PSIP and IMS

Interpersonal communication using the information networks can be accomplished in many different ways. Users may communicate, for example, by using a specific communication application on an end-user terminal, typical mobile phone, or IP Multimedia Subsystem (IMS) client. Quite often there is no interconnection mechanisms between these different communication methods, and this is emphasized with regards to various communication applications. We propose an architecture for interconnecting Peer-to-peer Session Initiation Protocol (P2PSIP) and IMS networks. The actual gateway, that enables the interconnection, is seen as a peer in the P2PSIP side and as an application server (AS) in the IMS side. Furthermore, we present a prototype from the proposed interconnection architecture.