Operation Manual – Process Server Configuration
H3C XE 200/2000 IP PBX
Chapter 2 H.323 Overview
2-5
VI. H.323 call setup modes
Based on the exchange method of multimedia information, such as the RTP/RTCP
transmission address), H.323 calls can be set up in common mode or faststart mode.
z
Common: Multimedia channel information is transferred through the multimedia
control signaling channel. In this mode, H.245 processes including master/slave
gateway decision, capability negotiation and logical channel opening are involved.
z
Faststart: Multimedia channel information is transferred through the call control
signaling channel by the fastStart parameter in the call control signaling. In this
mode, H.245 processes including master/slave gateway, capability negotiation
and logical channel opening are not involved.
2.1.2 H.323 Architecture
The architecture of H.323 includes terminals, gateways, gatekeepers and multipoint
control units (MCUs). Gatekeepers are optional in an H.323 network; but if a
gatekeeper is present, the terminals, gateways, and MCUs registered with the
gatekeeper form a zone (see
Figure 2-3
). These devices can overlay networks or
subnets through routers.
A zone is independent of network topology. It may comprise multiple network segments
connected using routing devices. Multiple zones form an H.323 system.
MCUs are applied mainly in VoIP networks that provides voice conferencing functions.
A MCU consists of a multipoint controller (MC) and a multipoint processor (MP). In
multipoint conferencing, the MC is in responsible for capability exchange with
endpoints, and the MP processes media streams (including audio/video/data streams
from terminals) and then forwarded them to the destination.
H.323 terminal
H.323 terminal H.323 terminal
H.323 terminal H.323 terminal
Gatekeeper
Router
Router
H.323 gateway
MCU
H.323 terminal
H.323 terminal H.323 terminal
H.323 terminal H.323 terminal
Gatekeeper
Router
Router
H.323 gateway
MCU
Figure 2-3
H.323 zone
Содержание XE 200/2000 IP
Страница 7: ...Basic Configuration ...
Страница 42: ...Process Server Configuration ...
Страница 82: ...Location Server Configuration ...
Страница 182: ...Feature ...
Страница 259: ...System Management ...
Страница 341: ...IP Performance and Application ...
Страница 349: ...Media Server ...
Страница 360: ...Call Services ...
Страница 507: ...Appendix A ...
Страница 511: ...Appendix B ...