Cisco Expressway Series Configuration Manual - Page 20
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Cisco Expressway IP Port Usage Configuration Guide
H.323 Calls Port Reference
Table 10 H.323 Ports Reference
Purpose
Initial
RAS connection
Initial
RAS connection
Q.931 / H.225
signaling
Q.931 / H.225
signaling
Q.931 / H.225
signaling
Q.931 / H.225
signaling
H.245
H.245
H.245
H.245
H.245
H.245
RTP
(multiplexed
traversal media)
RTCP
(multiplexed
traversal media)
Src. IP
External address of
firewall protecting off-
premises endpoint
Expressway-C
Any (endpoint in the
Internet)
Expressway-E (public)
Expressway-C
Expressway-C
Expressway-C
Expressway-C
Any (endpoint in the
Internet)
Expressway-E (public)
External address of
firewall protecting off-
premises Assent endpoint
External address of
firewall protecting off-
premises H.460.18/19
endpoint
Expressway-C
Expressway-C
Src. ports
Protocol Dest. IP
>=1024
UDP
Expressway-
E (public)
1719
UDP
Expressway-
E (private)
1720
TCP
Expressway-
E (public)
15000-
TCP
Any
19999
(endpoint in
the Internet)
15000-
TCP
Expressway-
19999
E (private)
15000-
TCP
Expressway-
19999
E (private)
15000-
TCP
Expressway-
19999
E (private)
15000-
TCP
Expressway-
19999
E (private)
>=1024
TCP
Expressway-
E (public)
15000-
TCP
Any
19999
(endpoint in
the Internet)
>=1024
TCP
Expressway-
E (public)
>=1024
TCP
Expressway-
E (public)
36000-
UDP
Expressway-
59998
E (private)
(even
ports)
36001-
UDP
Expressway-
59999
E (private)
(odd ports)
20
Dst. Ports
1719
6001 (for first traversal zone,
6002 for second etc.)
1720
1720 (endpoint signaling port,
specified during registration.
Could be another port
>=1024)
2776 (Assent calls)
1720 (H.460.18 calls)
2776 (Assent calls)
2777 (H.460.18 calls)
Expressway-E (public)
>=1024 (endpoint H.245
signaling port)
2776
2777
2776 (Small/Medium)
or 36000-36010 (even ports)
(Large)
2777 (Small/Medium)
or 36001-36011 (odd ports)
(Large)