Packet Data

VoIP : Voice over Internet Protocol

RTP : Real-time Transfer Protocol

SIP : Session Initiation Protocol

H.323 : is a standard that specifies the components, protocols and procedures that provide multimedia communication services : real-time audio, video, and data communications over packet networks, including Internet protocol (IP) based networks.

MGCP : Media Gateway Control Protocol

CODEC : COmpressor/DE-Compressor Alorithm

SOFTSWITCH : carrier-class servers that control voice phone calls across circuit- and packet-switched networks

ATM : Asynchronous transfer mode

FRAME RELAY : A high-speed packet switching protocol used in wide area networks (WANs)