Operation Manual – Process Server Configuration
H3C XE 200/2000 IP PBX
Chapter 2 H.323 Overview
2-4
XE IP PBX
(Gatekeeper)
RAS Signal
RAS Signal
H.225.0 Signal
H.245 Signal
H.225.0 Signal
H.245 Signal
H.323 Gateway
H.323 Gateway
Figure 2-2
Routed call
The process of a routed call is as follows.
1)
The calling gateway gets authenticated at the gatekeeper through RAS signaling.
It then obtains the call signaling address of the gatekeeper if it passes the
authentication.
2) The calling gateway establishes a call control channel between itself and the
gatekeeper using the call signaling address.
3) The gatekeeper establishes a call control channel between itself and the called
gateway. The calling gateway then sends a call setup request to the called
gateway through the gatekeeper.
4)
The called gateway gets authenticated at the gatekeeper through RAS signaling.
5) The calling gateway and the called gateway exchange call control signaling
through the gatekeeper. This procedure varies in the following ways:
If the gatekeeper gets the H.245 address of the calling gateway during the exchange of
call control signaling:
z
The gatekeeper opens a H.245 port and notifies the called gateway.
z
The called gateway actively establishes a media channel control signaling channel
between itself and the gatekeeper.
z
The gatekeeper establishes a media channel control signaling channel between
itself and the calling gateway.
z
The calling gateway and the called gateway exchange media channel control
signaling and multimedia information through the gatekeeper.
If the gatekeeper gets the H.245 address of the called gateway during the exchange of
call control signaling:
z
The gatekeeper opens a H.245 port and notifies the calling gateway.
z
The calling gateway establishes a media channel control signaling channel
between itself and the gatekeeper.
z
The gatekeeper establishes a media channel control signaling channel between
itself and the called gateway.
z
The calling gateway and the called gateway exchange media channel control
signaling and multimedia information through the gatekeeper.
In this mode, the calling gateway and the called gateway exchange the call control
signaling and the media channel control signaling through the gatekeeper.
Содержание XE 200 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...