1. Introduction (megaco)
1 Introduction
Megaco/H.248 is a protocol for control of elements in a physically decomposed multimedia gateway, enabling separation of call control from media conversion. A Media Gateway Controller (MGC) controls one or more Media Gateways (MG).
This version of the stack supports version 1, 2 and 3 as defined by:
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version 1 - RFC 3525 and H.248-IG (v10-v13)
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version 2 - draft-ietf-megaco-h248v2-04 & H.248.1 v2 Corrigendum 1 (03/2004)
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version 3:
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prev3a - as defined by TD-33 (except segments)
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prev3b - TD-33 updated to be backward compatible with v2 (except segments)
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prev3c - As defined by ITU H.248.1 (09/2005) (except segments)
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v3 - Full version 3 as defined by ITU H.248.1 (09/2005) (including segments)
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The semantics of the protocol has jointly been defined by two standardization bodies:
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