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Cisco TelePresence - Page 392

Cisco TelePresence
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Service/
function
Purpose VCS port (default) Direction Configurable via
H.323 call
signaling
Listens for H.323 call signaling. 1720 TCP inbound Configuration >
Protocols > H.323
Assent call
signaling
Assent signaling on the VCS Expressway. 2776 TCP inbound Configuration >
Traversal > Ports
H.460.18
call
signaling
H.460.18 signaling on the VCS
Expressway.
2777 TCP inbound Configuration >
Traversal > Ports
TURN
services
Listening port for TURN relay requests on
VCS Expressway.
3478 UDP * inbound Configuration >
Traversal > TURN
System
database
Encrypted administration connector to the
VCS system database.
4444 TCP inbound not configurable
SIP UDP Listens for incoming SIP UDP calls. 5060 UDP inbound
outbound
Configuration >
Protocols > SIP
SIP TCP Listens for incoming SIP TCP calls. 5060 TCP inbound Configuration >
Protocols > SIP
SIP TLS Listens for incoming SIP TLS calls. 5061 TCP inbound Configuration >
Protocols > SIP
B2BUA Internal ports used by the B2BUA. Traffic
sent to these ports is blocked
automatically by the VCS's non-
configurable firewall rules.
5071, 5073 TCP inbound not configurable
Traversal
server zone
H.323 Port
Port on the VCS Expressway used for
H.323 firewall traversal from a particular
traversal client.
6001 UDP,
increments by 1 for
each new zone
inbound Configuration >
Zones
Traversal
server zone
SIP Port
Port on the VCS Expressway used for SIP
firewall traversal from a particular
traversal client.
7001 TCP,
increments by 1 for
each new zone
inbound Configuration >
Zones
H.225 and
H.245 call
signaling
port range
Range of ports used for call signaling after
a call is established.
15000 - 19999 TCP inbound
outbound
Configuration >
Protocols > H.323
SIP TCP
outbound
port range
Range of ports used by outbound
TCP/TLS SIP connections to a remote SIP
device.
25000 - 29999 TCP outbound Configuration >
Protocols > SIP
Ephemeral
ports
Various purposes.
(The default range of 30000 – 35999
applies to new installations of X8.1 or
later; the previous default range of 40000
– 49999 still applies to earlier releases
that have upgraded to X8.1.)
30000 – 35999 outbound System >
Administration
Table 7: Local inbound/outbound ports (continued)
Cisco VCS Administrator Guide (X8.1.1) Page 392 of 507
Reference material
Port reference

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