Intra-Site Extension Dialing
----------------------------

Within a site, users can make calls to other users by dialing only the extension
part of the directory number. Although the lines are provisioned as (ISP)+SLC+Extension
number, when the user dials only a subset of these digits, the dial plan treats
the call as an intra-site call, and prefixes the called number with the ISP+SLC
to route the call.

.. note::

   Intra-site calls can also be dialed as ISP+SLC+Extension.