CHAPTER 29. H.323 Gateway Management
418
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Figure 29.7 RAS Registration Procedure
Alternative Gatekeeper Procedure
H.323 gateway processes the alternate gatekeeper field(altGKList, altGKList)
in GatekeeperConfirm(GCF), GatekeeperRejection(GRJ),
RegistrationConfirm(RCF) and RegistrationRejection(RRJ) Message; and
H.323 gateway enables interworking with other gatekeeper at GRQ and RRQ
stage. This function provides redundancy when the gatekeeper interworking
over H.323 network fails; and the system availability, redundancy and
scalability should be implemented at the gatekeeper level.
start
current-gatekeeper
is primary gatekeeper
send full-RRQ
to current-gatekeeper
recv RCF?
recv RRJ?
is the reason
disc-overy
Required
chosen?
recv GCF?
send lightweight-RRQ
to current-gatekeeper
is the current-
gatekeeper primary
gatekeeper?
current-gatekeeper
is secondary
gatekeeper
yes
no
yes
yes
yes
send GRQ
to current-gatekeeper
no
no
no
yes
no
current-gatekeeper
is primary gatekeeper
Summary of Contents for Ubigate iBG3026
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