Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼
Protocols
Cisco VCS as a SIP Presence Server
The Cisco VCS supports the SIP-based SIMPLE protocol. It can act as a Presence Server and
Presence User Agent for any of the SIP domains for which it is authoritative. For full information on
how to enable and use the Cisco VCS as a SIP Presence server, see the
Presence User Agent for any of the SIP domains for which it is authoritative. For full information on
how to enable and use the Cisco VCS as a SIP Presence server, see the
section.
Movi v2.0 (or later) clients
As for any other SIP endpoint, the Cisco VCS acts as a SIP registrar and SIP proxy for Movi™ v2.0
(or later) clients - no other special support or configuration is required on the Cisco VCS.
(or later) clients - no other special support or configuration is required on the Cisco VCS.
H.323 configuration
The H.323 page (
VCS configuration > Protocols > H.323
) is used to enable and disable
on
the Cisco VCS, and configure H.323-specific ports and settings.
Field
Description
Usage tips
H.323 mode
Enables or disables H.323
on the Cisco VCS. H.323
support is On by default
on the Cisco 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 Cisco VCS configuration uses standard
port numbers so you can use H.323 services out of the
box without having to first set these up.
port numbers so you 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
start and
end
signaling
port range
start and
end
Specifies the lower port in
the range used by H.323
calls after they are
established. Default is
15000.
the 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.
support all the required concurrent calls.
Registration
conflict
mode
conflict
mode
Determines how the
system behaves if an
endpoint attempts to
register an alias currently
registered from another IP
address.
system behaves if an
endpoint attempts to
register an alias currently
registered from another IP
address.
Reject: denies the new
registration. This is the
default.
registration. This is the
default.
Overwrite: deletes the
original registration and
replaces it with the new
registration.
original registration and
replaces it with the new
registration.
An H.323 endpoint may attempt to register with the
Cisco VCS using an alias that has already been
registered on the Cisco VCS from another IP address.
The reasons for this could include:
Cisco VCS using an alias that has already been
registered on the Cisco VCS from another IP address.
The reasons for this could include:
n
Two endpoints at different IP addresses are
attempting to register using the same alias.
attempting to register using the same alias.
n
A single endpoint has previously registered using a
particular alias. The IP address allocated to the
endpoint then changes, and the endpoint attempts
to re-register using the same alias.
particular alias. The IP address allocated to the
endpoint then changes, and the endpoint attempts
to re-register using the same alias.
Reject is useful if your priority is to prevent two users
registering with the same alias. Overwrite is useful if
your network is such that endpoints are often allocated
new IP addresses, because it will prevent unwanted
registration rejections.
registering with the same alias. Overwrite is useful if
your network is such that endpoints are often allocated
new IP addresses, because it will prevent unwanted
registration rejections.
Cisco VCS Administrator Guide (X6)
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