The media gateway control protocol mgcp is a signaling and call control communications protocol used in voice over ip voip telecommunication systems. Media gateways contain endpoints on which the call agent can create, modify and. The generic, line, trunk, handset, rtp, dtmf dual tone multifrequency, announcement server and script. The media gateway control protocol mgcp emerged from a group now called the.
Rfc 2705 media gateway control protocol mgcp version 1. The protocol defines a means of communication between a media gateway, which converts data from the format required for a circuitswitched network to that required for a packetswitched network and the media gateway controller. This document describes how to successfully secure media gateway control protocol mgcp signalling between a voice gateway gw and cucm cisco unified communications manager via internet protocol security ipsec, based on certificate authority ca signed certificates. This document provides a basic set of media gateway control protocol mgcp packages. Rfc 3660 basic media gateway control protocol mgcp. In addition to these, five new packages are defined here. The media gateway control protocol architecture is a methodology of providing. Mgcp, described as informational rfc 2705, has been widely deployed. Mgcp, or media gateway control protocol is a protocol used within a distributed voice over ip system. We expect that in the future, the same gateways will combine voice over ip services and network access services. This has the advantage of centralized gateway administration and provides for largely scalable ip telephony solutions.
Rfc 2705 media gateway control protocol mgcp october 1999 2. Media gateways contain endpoints on which the call agent can create, modify and delete connections in order to establish and control media sessions with other multimedia endpoints. Mgcp media gateway control protocol defines a protocol which can be used to manage the elements of a decomposed media gateway. Mgcp is a masterslave protocol, where the endpoint slave is controlled by a call agent master of some type. Rfc 3435 media gateway control protocol mgcp version 1.
Control protocol between a media gateway controller and a media. We expect that, in the future, the same gateways will combine voice over ip services. Bellcore announce merger of protocol specifications for voice over ip. Ietf merged mgcp and mdcp and proposed a new and improved protocol. Media gateway control protocol mgcp redirect and reset package. Pdf this document describes protocol requirements for the media gateway control protocol between a media gateway. Secured mgcp communication between voice gw and cucm via. Learn what mgcp is and how it works, and get a practical guide on how to use it. Media gateway control protocol mgcp package registry. The generic, line, trunk, handset, rtp, dtmf dual tone multifrequency, announcement server and script packages are updates of packages from rfc 2705 with additional explanation and in some cases new versions of these packages. For example, in mgcp a call can use an endpoint mode conference to manage the stream mixing, but it cannot achieve the fine grain control of h.
Understanding mgcp interactions with cisco callmanager. Mgcp is a masterslave protocol in which media gateways mgs are controlled by a call control agent or softswitch. Media gateway control protocol architecture wikipedia. It implements the media gateway control protocol architecture for controlling media gateways connected to the public switched telephone network pstn. Media gateway control protocol protokoll wikipedia. Rfc 3992 media gateway control protocol mgcp lockstep state reporting mechanism. A media gateway is a translation device or service that converts media streams between disparate telecommunications technologies such as pots, ss7, next generation networks or private branch. The entire control intelligence is controlled by a master who instructs the endpoint what action to take once an event is detected. Mgcp defined under rfc 2705 is a master slave protocol that allows a call control device such as cisco callmanager to take control of a specific port on a gateway. Media gateway control protocol mgcp, also known as h.
Protocols and networks such as ipmpls that transport media with guaranteed quality of service. The media gateway control protocol mgcp is defined by rfc 2705. Media gateway control and the softswitch architecture. The media gateway control protocol mgcp is a signaling and call control communications. The bestknown media gateway control protocols are currently media gateway control protocol mgcp and megacoh.
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