Dialing By Enum - Cisco TelePresence Administrator's Manual

Dial plan and call processing

Dialing by ENUM

ENUM dialing allows an endpoint to be contacted by a caller dialing an E.164 number - a telephone number -
even if that endpoint has registered using a different format of alias. The E.164 number is converted into a
URI by the DNS system, and the rules for URI dialing are then followed to place the call.
The ENUM dialing facility allows you to retain the flexibility of URI dialing while having the simplicity of being
called using just a number - particularly important if any of your callers are restricted to dialing using a
numeric keypad.
To support ENUM dialing on the VCS you must configure it with at least one DNS server and the appropriate
ENUM zones.
Full instructions on how to configure the VCS to support ENUM dialing (both outbound and inbound) are given
in the ENUM dialing section.
Cisco VCS Administrator Guide (X7.2) Page 194 of 498