The former Recommendation H.248 was renumbered as H.248.1 when revised on 2002-03-29. It contains Annexes A to E and Appendix I of former H.248. Subsequent annexes are sequentially numbered in the series, e.g. H.248 Annex F is now H.248.2.

This section describes the development and working principle of the H.248 AG and its application in the voice over IP (VoIP) field. H.248 is a recommendation from the International Telecommunication Union - Telecommunication Standardization Sector (ITU-T) and was first published (version 1) in June 2000.

Media Gateway Control Protocol (MGCP), commonly known as H.248, is a standard protocol for handling the signaling and session management needed during a multimedia conference. This happens when call-control devices use a plain-text protocol, MGCP, …

H.248, also known as the "Megaco" protocol, is the international standard for media gateway control. It is a standard published jointly by the ITU and the IETF. It is primarily used to separate the call control logic from the media processing logic in a gateway.

2013年12月19日 · H.248 and H.323 are protocols associated with VoIP, but serve different functions. IP telephony expert Jon Arnold explains the difference between the two in this expert response.

After the DBE creates media pinholes and defines the policy, the DBE manages the media packets based on that policy. The features in this chapter describe different H.248 services and controlling functions of the DBE.

H.248 (also known as the Megaco protocol) is the standard for allowing a media gateway controller (MGC) to control media gateways (MG). H.248 represents a joint cooperative effort between the ITU and the IETF. Prior to this effort, there were a number of competing protocols, including MGCP (the combination of SGCP and IPDC) and MDCP.

H.248 Standards For a history of previously approved documents and for current work in progress, please refer to the document status page. Draft H.248 Core Documents

The pages serves as a resource on information related to the ITU-T / IETF protocol for media gateway controllers and media gateways called H.248/Megaco. It should be noted that this is a different media gateway control protocol than MGCP. …

The purpose of authentication is to prevent unauthorized entities from establishing illegal calls or interfering with legal calls through the H.248 or MGCP protocol. Authentication can be implemented only when it is also supported by the MGC interconnected with the MG.