Cisco TelePresence Administrator's Manual page 84

Field Description
SIP mode Enables and disables SIP functionality (SIP registrar
and SIP proxy services) on the VCS. Default is On.
SIP protocols The VCS supports SIP over UDP, TCP and TLS
and ports 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 VCS listens
for such connections.
By default UDP is Off, and TCP and TLS are On. The
default ports are:
UDP port: 5060
n
TCP port: 5060
n
TLS port: 5061
n
TCP outbound The range of ports the VCS uses when TCP and TLS
port start / end connections are established. The default range is
25000 to 29999.
Session The maximum time allowed between session refresh
refresh requests for SIP calls. Default is 1800 seconds.
interval
Minimum The minimum value the VCS will negotiate for the
session session refresh interval for SIP calls. Default is 500
refresh seconds.
interval
Require UDP Controls whether the VCS requires the use of the
BFCP mode com.tandberg.udp.bfcp extension for endpoints that
support it.
Require Duo Controls whether the VCS requires the use of the
Video mode com.tandberg.sdp.duo.enable extension for endpoints
that support it.
Certificate revocation checking section:
Certificate Controls whether revocation checking is performed for
revocation certificates exchanged during SIP TLS connection
checking establishment.
mode
Use OCSP Controls whether the Online Certificate Status Protocol
(OCSP) may be used to perform certificate revocation
checking.
Use CRLs Controls whether Certificate Revocation Lists (CRLs)
are used to perform certificate revocation checking.
Cisco VCS Administrator Guide (X7.2)
Usage tips
This mode must be enabled to use
either the Presence Server or the
Presence User Agent.
At least one of the transport protocols
must be set to a Mode of On for SIP
functionality to be supported.
The range must be sufficient to
support all required concurrent
connections.
For further information see the
definition of Session-Expires in
4028.
For further information see the
definition of Min-SE header in
4028.
The default settings for these modes
are not supported by some neighbor
systems so make sure you select the
appropriate zone profile when
configuring zones.
To use OCSP, the X.509 certificate to
be checked must contain an OCSP
responder URI.
CRLs can be loaded manually onto
the VCS, downloaded automatically
from preconfigured URIs (see
management), or downloaded
automatically from a CRL distribution
point (CDP) URI contained in the
X.509 certificate.
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Protocols
RFC
RFC
CRL