Cisco Cisco Expressway Manuel De Maintenance
Purpose
Protocol
Expressway-C (source)
Expressway-E (listening)
Traversal zone SIP media
(for small/medium systems on X8.1 or
later)
later)
UDP
36000 to 59999*
36000 (RTP), 36001
(RTCP) (defaults)
(RTCP) (defaults)
Traversal zone SIP media
(for large systems)
UDP
36000 to 59999*
36000 to 36011 (6 pairs of
RTP and RTCP ports for
multiplexed media
traversal)
RTP and RTCP ports for
multiplexed media
traversal)
Outbound from Expressway-E (DMZ) to public internet
Purpose
Protocol
Expressway-E (source)
Internet endpoint
(listening)
(listening)
SIP media
UDP
36002 to 59999 or
36012 to 59999
>= 1024
SIP signaling
TLS
25000 to 29999
>= 1024
Inbound from public internet to Expressway-E (DMZ)
Purpose
Protocol
Internet endpoint (source)
Expressway-E (listening)
XMPP (IM and Presence)
TCP
>= 1024
5222
HTTP proxy (UDS)
TCP
>= 1024
8443
Media
UDP
>= 1024
36002 to 59999 or
36012 to 59999*
SIP signaling
TLS
>= 1024
5061
HTTPS (only required for external
administrative access, which is
strongly discouraged)
administrative access, which is
strongly discouraged)
TCP
>= 1024
443
From Expressway-C to Internal Infrastructure and Endpoints
Purpose
Protocol
Expressway-C (source)
Internal Device Port/Range
XMPP (IM and Presence)
TCP
Ephemeral port
7400 (IM and Presence)
HTTP proxy (UDS)
TCP
Ephemeral port
8443 (Unified CM)
HTTP proxy (SOAP)
TCP
Ephemeral port
8443 (IM and Presence
Service)
Service)
HTTP (configuration file retrieval)
TCP
Ephemeral port
6970 (Unified CM)
CUC (voicemail)
TCP
Ephemeral port
443 (Unity Connection)
Message Waiting Indicator (MWI) from
Unity Connection
Unity Connection
TCP
Ephemeral port
7080 (Unity Connection)
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Cisco Expressway Administrator Guide
Reference Material