Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼
Preventing Automatic H.323 Registrations
You can prevent H.323 endpoints being able to register automatically with the VCS by disabling Auto Discovery on
the VCS (Configuration > Protocols > H.323).
the VCS (Configuration > Protocols > H.323).
Registration Refresh
The H.323 Time to live setting controls the frequency of H.323 endpoint registration refresh. The refresh frequency
increases when the time to live is decreased. When you have many H.323 endpoints, be careful not to set the TTL too
low, because a flood of registration requests will unnecessarily impact the VCS performance.
increases when the time to live is decreased. When you have many H.323 endpoints, be careful not to set the TTL too
low, because a flood of registration requests will unnecessarily impact the VCS performance.
Configuring H.323
■
whether H.323 is enabled or not
■
H.323 gatekeeper settings
■
whether to insert the prefix of the ISDN gateway into the caller's E.164 number presented on the destination
endpoint
endpoint
The configurable options are:
Field
Description
Usage tips
H.323 mode Enables or disables H.323 on
the VCS. H.323 support is On
by default.
Registration
UDP port
UDP port
The listening port for H.323
UDP registrations. Default is
1719.
UDP registrations. Default is
1719.
The default VCS configuration uses standard port numbers so you
can use H.323 services out of the box without having to first set
these up.
can use H.323 services out of the box without having to first set
these up.
Call
signaling
TCP port
signaling
TCP port
The listening port for H.323
call signaling. Default is 1720.
call signaling. Default is 1720.
Call
signaling
port range
port range
start and
end
end
Specifies the lower port in the
range used by H.323 calls
after they are established.
Default is 15000.
range used by H.323 calls
after they are established.
Default is 15000.
The call signaling port range must be great enough to support all the
required concurrent calls.
required concurrent calls.
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Cisco TelePresence Video Communication Server Administrator Guide
Protocols