Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼
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H.323 Assent call signaling port; default is 2776
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H.323 H.460.18 call signaling port; default is 2777
RTP and RTCP media demultiplexing ports
:
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Small/Medium systems: 1 pair of RTP and RTCP media demultiplexing ports are used. They can either be
explicitly specified or they can be allocated from the start of the general range of traversal media ports.
explicitly specified or they can be allocated from the start of the general range of traversal media ports.
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Large systems: 6 pairs of RTP and RTCP media demultiplexing ports are used. They are always allocated
from the start of the traversal media ports range.
from the start of the traversal media ports range.
Configuring ports for connections from traversal clients
Each traversal server zone specifies an H.323 port and a SIP port to use for the initial connection from the
client. Each time you configure a new traversal server zone on the VCS Expressway, you are allocated
default port numbers for these connections:
client. Each time you configure a new traversal server zone on the VCS Expressway, you are allocated
default port numbers for these connections:
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H.323 ports start at UDP/6001 and increment by 1 for every new traversal server zone.
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SIP ports start at TCP/7001 and increment by 1 for every new traversal server zone.
You can change these default ports if necessary but you must ensure that the ports are unique for each
traversal server zone. After the H.323 and SIP ports have been set on the VCS Expressway, matching ports
must be configured on the corresponding traversal client. Note that:
traversal server zone. After the H.323 and SIP ports have been set on the VCS Expressway, matching ports
must be configured on the corresponding traversal client. Note that:
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The default port used for the initial connections from MXP endpoints is the same as that used for standard
RAS messages, that is UDP/1719. While you can change this port on the VCS Expressway, most
endpoints will not support connections to ports other than UDP/1719, therefore we recommend that you
leave this as the default.
RAS messages, that is UDP/1719. While you can change this port on the VCS Expressway, most
endpoints will not support connections to ports other than UDP/1719, therefore we recommend that you
leave this as the default.
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You must allow outbound connections through your firewall to each of the unique SIP and H.323 ports that
are configured on each of the VCS Expressway’s traversal server zones.
are configured on each of the VCS Expressway’s traversal server zones.
The following table shows the default ports used for connections to the VCS Expressway.
Protocol
Call signaling
Media
Assent
UDP/1719: listening
port for RAS
messages
port for RAS
messages
TCP/2776: listening
port for H.225 and
H.245 protocols
port for H.225 and
H.245 protocols
The RTP and RTCP media demultiplexing ports in Large system are
always allocated from the start of the general range of traversal media
ports (UDP/36000-36011*). In Small/Medium systems the media
demultiplexing ports can either be explicitly specified or they can be
allocated from the start of the traversal media ports range.
always allocated from the start of the general range of traversal media
ports (UDP/36000-36011*). In Small/Medium systems the media
demultiplexing ports can either be explicitly specified or they can be
allocated from the start of the traversal media ports range.
Table 1: Default traversal port connections
Cisco TelePresence Video Communication Server Administrator Guide (X8.5)
Page 59 of 559
Firewall traversal
Configuring ports for firewall traversal