Dial Plan Configuration; About The Fallback Alias - Cisco TelePresence Administrator's Manual

Dial plan configuration

The Dial plan configuration
how the VCS routes calls in specific call scenarios.
The configurable options are:
Field Description
Calls to Determines the way in which the VCS attempts
unknown to call systems which are not registered with it
IP or one of its neighbors.
addresses
Direct: allows an endpoint to make a call to an
unknown IP address without the VCS querying
any neighbors.
The call setup would occur just as it would if the
far end were registered directly to the local
system.
Indirect: upon receiving a call to an unknown IP
address, the VCS will query its neighbors for
the remote address and if permitted will route
the call through the neighbor.
Off: endpoints registered directly to the VCS
may only call an IP address of a system also
registered directly to that VCS.
The default is Indirect.
Fallback The alias to which incoming calls are placed for
alias calls where the IP address or domain name of
the VCS has been given but no callee alias has
been specified.

About the fallback alias

The VCS could receive a call that is destined for it but which does not specify an alias. This could be for one
of the following reasons:
the caller has dialed the IP address of the VCS directly
n
the caller has dialed a domain name belonging to the VCS (either one of its configured SIP domains, or any
n
domain that has an SRV record that points at the IP address of the VCS), without giving an alias as a prefix
Normally such calls would be disconnected. However, such calls will be routed to the Fallback alias if it is
specified.
Note that some endpoints do not allow users to enter an alias and an IP address to which the call should be
placed.
Example usage
You may want to configure your fallback alias to be that of your receptionist, so that all calls that do not
specify an alias are still answered personally and can then be redirected appropriately.
Cisco VCS Administrator Guide (X7.2)
page (VCS configuration > Dial plan >
Dial plan and call processing
Configuration) is used to configure
Usage tips
This setting applies to the call's destination
address prior to any zone transforms, but after
any pre-search transforms, Call Policy or User
Policy rules have been applied.
In addition to controlling calls, this setting also
determines the behavior of provisioning and
presence messages to SIP devices, as these
messages are routed to IP addresses.
See the IP dialing section for more information.
If no fallback alias is configured, calls that do not
specify an alias will be disconnected. See below
for more information.
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