White Paper Abstract:
This white paper describes that wide-scale voice over IP (VoIP) implementations based on Session Initiation Protocol (SIP) and H.323 are gaining traction and are starting to be heavily deployed in large enterprises (Figure 1). VoIP is becoming an equivalently pervasive solution in the small office/home office (SOHO) market.
Service providers are deploying packet telephony technologies as an alternative to traditional circuit-switched telephone networks in order to shift traditional voice services to packet-based networks and to create new services that combine data, voice, and video information. The lower cost associated with converged data and voice networks is a prime rationale for deployment of packet telephony.