SIP(Session Initiation Protocol) and ITU-T recommendation H.323

Well, the material of the study of today's chief telecommunications engineer is SIP. Well, common sense or an easy problem is considerably sulky and, then, today's material is [kochira] ↓↓ though it is an outline problem of SIP and H.323.



- SIP(Session Initiation Protocol) and ITU-T recommendation H.323



SIP is standardized by IETF, and a multi half of the message in SIP is described by the binary form.

These sentences are wrong.
- It is not a binary, and the text form of SIP.



ITU-T recommendation H.323 is composed of two or more protocols that provide for the call control of the terminal and the method of encoding the voice and the image etc.

These sentences are correct.
- H.323 is composed of two or more protocols.



H.323MCU(Multipoint Control Unit) that is one of the components of the telecommunication system in accordance with ITU-T recommendation H.323 offers a function necessary to achieve the multi point communication (communication done with three terminals or more).

These sentences are correct.
- "Multi point communication" is " MCU " in H.323 if said.



Well, how? The message of SIP is thought that the text is common sense and I think that it is understood that H.323 is composed of two or more protocols. MCUI distributes the packet to the terminal when it will quote it from Wiki by abbreviating Multipoint Control Unit, and is an equipment of the teleological conference etc. the third MCU that communicates between multi points. MCU manages the resource of the conference, does the negotiation between terminals, and, according to circumstances, treats the media streams. It is also possible that MCU makes them coexist on the same device as the gateway and the gatekeeper. ･･･ It is remembered that it is not only H.323 exclusive use though it becomes because there are SIP and the corresponding one according to ..MCU.. product, too. Then, around here today