Cisco Cisco Expressway Release Notes
Additional information
Cisco TelePresence Cisco Expressway Software Release Notes (X8.1.2)
Page 10 of 14
Service/
function
function
Purpose
Destination port
(default)
(default)
Configurable via
Neighbors (H.323)
H.323 connection to a neighbor zone.
1710 UDP
Configuration > Zones
Neighbors (SIP)
SIP connection to a neighbor zone.
5060 / 5061 TCP
Configuration > Zones
Traversal zone (H.323)
H.323 connection to a traversal
server.
server.
6001 UDP
Configuration > Zones
Traversal zone (SIP)
SIP connection to a traversal server.
7001 TCP
Configuration > Zones
TURN media relay
Range of ports available for TURN
media relay.
media relay.
24000 – 29999
UDP
UDP
Configuration > Traversal
> TURN
> TURN
(on Expressway-
E)
Table 3: Remote listening ports (continued)
Additional information
Software filenames
The Expressway software filenames are in the format s42700x<y_y_y> where x<y_y_y> represents the
software version (for example x8_1_0 represents X8.1).
software version (for example x8_1_0 represents X8.1).
Secure communications
For secure communications (HTTPS and SIP/TLS) we recommend that you replace the Expressway default
certificate with a certificate generated by a trusted certificate authority. See
certificate with a certificate generated by a trusted certificate authority. See
install certificates.
Restricting access to ISDN gateways (toll-fraud prevention)
Expressway-E users should take appropriate action to restrict unauthorized access to ISDN gateway
resources. See
resources. See
for information about how to do this.
Supported RFCs
The following RFCs are supported within the Expressway X8.1.2 release:
RFC
Description
791
Internet Protocol
1213 Management Information Base for Network Management of TCP/IP-based internets
1305 Network Time Protocol (Version 3) Specification, Implementation and Analysis
2327 SDP: Session Description Protocol
2460 Internet Protocol, Version 6 (IPv6) Specification (partial, static global addresses only)
2464 Transmission of IPv6 Packets over Ethernet Networks
Table 4: Supported RFCs