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What is the difference between H.248 and H.323? And what are the differences between ATM and FR tech

Learn the difference between H.248 and H.323 and also what the differences are between ATM and frame relay (FR) technology.

What is the difference between H.248 and H.323? And what are the differences between ATM and FR technologies?

To answer your first question, H.248 is a VoIP protocol that refers to an enhanced version of the Media Gateway...

Control Protocol (MGCP). WhatIs.com defines MGCP as follows: 

MGCP is a standard protocol for handling the signaling and session management needed during a multimedia conference. The protocol defines a means of communication between a media gateway, which converts data from the format required for a circuit-switched network to that required for a packet-switched network and the media gateway controller. MGCP can be used to set up, maintain, and terminate calls between multiple endpoints.

To answer your second question, the IT Knowledge Exchange has an excellent resource on how Asynchronous Transfer Mode (ATM) and frame relay (FR) technology differ


This was last published in May 2004

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