Call Disconnect
Figure 8-13 shows basal call-disconnect signaling amid a aperture and a gatekeeper.
Chapter 8: Configuring H.323 Gatekeepers 463
4 2
Gatekeeper 1 Attendant 2
GK1 GK2
Gateway A Aperture B
Phone A
801...
5
V
Phone B
408...
V
1
3
DCF DCF
Figure 8-13 Alarm Disconnect
The RAS signaling letters acclimated in this amount are DRQ and DCF.
Phones A and B are in a conversation, and RAS signaling occurs as follows:
1. Phone B hangs up.
2. Aperture B sends a DRQ to Attendant 2, disconnecting the alarm amid Phones A
and B. A DCF is accustomed some time later.
3. Aperture B sends a Q.931 absolution complete bulletin to Aperture A.
4. Aperture A sends a DRQ to Attendant 1, disconnecting the alarm amid Phones A
and B. A DCF is accustomed some time later.
5. Aperture A signals a alarm abstract to the articulation network.