Admission Request
Figure 8-6 shows an acceptance request. Before the alarm is set up, Gateway A sends an
ARQ to the gatekeeper. The attendant checks the cachet of alleged affair and sends either
an ACF bulletin or an ARJ message. In this case the attendant sends an ACF message.
Typically, the H.225 alarm bureaucracy occurs anon amid the two gateways.
Admission letters amid endpoints and gatekeepers accommodate the base for alarm admissions
and bandwidth control. Gatekeepers accredit acceptance to H.323 networks by confirming
or abnegation an acceptance request.
Self-Study Guide: Cisco Voice over IP (CVOICE)
8015552001 4085552001
H.245 Alarm Bureaucracy (TCP)
Dual RTP (UDP) Stream
Gateway B
Gatekeeper
Gateway A
H.225 Alarm Bureaucracy (TCP)
Dial Plan:
801555xxxx : Gateway A
408555xxxx : Gateway B
Admission Request