Cisco Cisco Expressway Maintenance Manual
If your network is set up to proxy registration requests, we recommend that you disable GRUU on the Expressway
systems that are acting as a Registrar for those proxied requests. If GRUU is left enabled, Presence may not work
properly for the proxy registered endpoints.
systems that are acting as a Registrar for those proxied requests. If GRUU is left enabled, Presence may not work
properly for the proxy registered endpoints.
GRUU can only be disabled via the CLI (
xConfiguration SIP GRUU Mode: Off
).
Accepting proxied registration requests
, you can also control whether the Expressway accepts the registration depending upon the zone through
which the request was received. You do this through the Accept proxied registrations setting when
.
Proxied registrations are classified as belonging to the zone they were last proxied from. This is different from non-
proxied registration requests which are assigned to a subzone within the Expressway.
proxied registration requests which are assigned to a subzone within the Expressway.
Configuring SIP
The SIP page (Configuration > Protocols > SIP) is used to configure the SIP settings on the Expressway, including:
■
SIP functionality and SIP-specific transport modes and ports
■
certificate revocation checking modes for TLS connections
■
registration controls for standard and outbound registrations
SIP Functionality and SIP-Specific Transport Modes and Ports
This section contains the basic settings for enabling SIP functionality and for configuring the various SIP-specific
transport modes and ports. The configurable options are:
transport modes and ports. The configurable options are:
Field
Description
Usage tips
SIP mode
Enables and disables SIP functionality (SIP registrar and
SIP proxy services)on the Expressway. Default is On.
SIP proxy services)on the Expressway. Default is On.
This mode must be enabled to use
either the Presence Server or the
Presence User Agent.
either the Presence Server or the
Presence User Agent.
SIP protocols
and ports
and ports
The Expressway supports SIP over UDP, TCP and TLS
transport protocols. Use the Mode and Port settings for
each protocol to configure whether or not incoming and
outgoing connections using that protocol are supported,
and if so, the ports on which the Expressway listens for
such connections.
transport protocols. Use the Mode and Port settings for
each protocol to configure whether or not incoming and
outgoing connections using that protocol are supported,
and if so, the ports on which the Expressway listens for
such connections.
The default modes and ports are:
■
UDP mode Off, port 5060
■
TCP mode On, port 5060
■
TLS mode On, port 5061
■
Mutual TLS mode Off, port 5062
At least one of the transport protocol
modes must be On to enable SIP
functionality.
modes must be On to enable SIP
functionality.
TCP outbound
port start /
end
port start /
end
The range of ports the Expressway uses when TCP and
TLS connections are established. The default range is
25000 to 29999.
TLS connections are established. The default range is
25000 to 29999.
The range must be sufficient to
support all required concurrent
connections.
support all required concurrent
connections.
Session
refresh
interval
refresh
interval
The maximum time allowed between session refresh
requests for SIP calls. Default is 1800 seconds.
requests for SIP calls. Default is 1800 seconds.
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Cisco Expressway Administrator Guide
Protocols