Media Gateway Control. Also know as H.248. A joint IETF/ITU standard to replace MGCP as the communications protocol between Media Gateway Controllers and Media Gateways.
MEGACO was developed by the ITU-T SG16 and IETF WG MEGACO and defines the control protocol between the media gateway controller (call agent) and the media gateway. The protocol provides - Control for various types of terminations, Support for negotiation of call capabilities, Multi user call scenarios, Rich termination dynamics, Quality of Service (QoS)and traffic measurement support, error reporting on protocol, call and capability and network failures.
Megaco is a call control protocol that addresses the relationship between the Media Gateway (MG), which converts circuit-switched voice to packet-based traffic, and the Media Gateway Controller (MGC), sometimes called a call agent or softswitch, which dictates the service logic of that traffic. Megaco is designed for intradomain remote control of devices such as VoIP gateways, remote access servers, Digital Subscriber Line Access Multiplexers (DSLAMs), Multiprotocol Label Switching (MPLS) routers, optical cross-connects and PPP session aggregation boxes.
Also known as IETF RFC 2885 and ITU Recommendation H.248, defines a centralized architecture for creating multimedia applications, including VoIP.
MEdia GAteway COntroller. IP telephony signaling protocol that is an evolution of MGCP.
The IETF name for the ITU-T H.248 protocol standard recommendation for controlling a media gateway when connecting telephone calls between a LAN and the PSTN. It handles many telephony issues such as redundant MGC systems that MGCP does not address. The Megaco protocol is similar to the MGCP protocol but is not backward-compatible with it, meaning a system using Megaco will not interoperate with a system using MGCP.
An emerging ITU standard that describes how the media gateway should behave and function. Also called H.248.
Megaco is a signalling protocol, used between a Media Gateway and a Media Gateway Controller (also known as a Call Agent or Softswitch) in a Vo IP network. It defines the necessary signalling mechanism to allow a Media Gateway Controller (Call Agent) to control gateways in order to support voice/fax calls between PSTN-IP or IP-IP networks.