ㆍNeed increase of consolidation for the exchange networks, access network, data network and high speed telecom
network along with the demand increase for network operating inefficiency and economical efficiency ㆍFinally it expects the consolidation to IP over any network(IP phone/data network)
ㆍVoice transmission via internet as voice-to-IP frame
ㆍIP based unified infra implementation by consolidating the voice and data which are in different network
ㆍTransition to the all packet(data network) which are available in legacy PSTN network(telephone network)
ㆍVoIP, IP PBX, Softswitch, IP-Phone
