Configuring Sip Domains - Cisco TelePresence Administrator's Manual

Field Description
Outbound The method used to generate the SIP registration
registration expiry period for outbound registrations.
refresh
Maximum: uses the lesser of the configured Maximum
strategy
refresh value and the value requested in the
registration.
Variable: generates a random value between the
configured Minimum refresh value and the lesser of
the configured Maximum refresh value and the value
requested in the registration.
The default is Variable.
Outbound The minimum allowed value for a SIP registration
registration refresh period for outbound registrations. Requests for
refresh a value lower than this will result in the registration
minimum being rejected with a 423 Interval Too Brief response.
The default is 600 seconds.
Outbound The maximum allowed value for a SIP registration
registration refresh period for an outbound registration. Requests
refresh for a value greater than this will result in a lower value
maximum being returned (calculated according to the Outbound
registration refresh strategy). The default is 3600
seconds.
SIP Specifies how proxied registrations and requests
registration containing Route Sets are handled.
proxy mode
Off: registration requests are not proxied (but are still
permitted locally if the VCS is authoritative for that
domain). Requests with existing Route Sets are
rejected.
Proxy to known only: registration requests are proxied
in accordance with existing call processing rules, but
only to known neighbor, traversal client and traversal
server zones. Requests containing Route Sets are
proxied only if they were received from a known zone.
Proxy to any: registration requests are proxied in
accordance with existing call processing rules to all
known zones. Requests containing Route Sets are
always proxied.
The default is Off.

Configuring SIP domains

The Domains page (VCS configuration > Protocols > SIP >
the VCS is authoritative. The VCS will act as a
Cisco VCS Administrator Guide (X7.2)
Domains) lists the SIP domains for which
SIP registrar and Presence Server for these domains, and will
Usage tips
These options work in the same
manner as for the Standard
registration refresh strategy.
However, outbound registrations
allow a much higher maximum value
than standard registrations. This is
because standard registrations use
the re-registration mechanism to
keep their connection to the server
alive. With outbound registrations the
keep-alive process is handled by a
separate, less resource-intensive
process, meaning that re-
registrations (which are more
resource-intensive) can be less
frequent.
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