click below
click below
Normal Size Small Size show me how
H.323 VOIP
H.323 only no SIP stuff here
| Question | Answer |
|---|---|
| H. 323 | Suite of Protocols establishing and managing multimedia services on a packet switched network |
| H.225 | VOIP and Video Session Layer protocol responsible for call setup- includes call set up, termination and requesting addition bandwidth and node status(H.323 subprotocol) |
| H.245 | Session laye protocol responsible for controlling a session that already exists between two nodes. For example ensuring same format of data is used.(H.323 subprotocol) |
| H.323 Gatekeeper | optional nerve center in a h.323 network does things like billing,authorize and authenticate terminals and gatways, manage bandwidth, oversee call routing and accounting |
| H.323 Gateway | Translates between signalling and SS7 and PSTN |
| H.323 Terminal | H323. telephone, visual |
| H.323 Zone | A collection of H.323 terminals, gateways and MCU's managed by a gatekeeper |
| H.323 MCU | Multipoint Control Unit. provides support for terminals and manages communications between them - also known as a video bridge |
| H.248/MEGACO | A protocol used between media gateway controllers and media gateways. More modern than MGCP |
| MGCP | Media Gateway Control Protocol used between media gateway controllers and media gateways |