Administrator's Guide

Screen reference
555-233-506750 Issue 5 October 2002
fac
Feature access code only — A FAC can be any number from 1–9
and contain up to 4 digits. You can use * or #, but only as a first
digit.
Avaya recommends that a FAC have the longest total length for a
given dialed string when using mixed numbering. Otherwise,
problems may occur when, for example, 3-digit FACs and 4-digit
extensions begin with the same first digit and the FAC is an
abbreviated dialing list access code.
However, if the entry in the dial plan that defines the FAC is used
to define the AAR or ARS access code, then it must have the
longest total length in the dial plan.
pext
Prefixed extension — Is made up of a prefix (first digit) that can
be a
0–9 (* and # not allowed) and an extension number of up to
5 digits in length. The maximum length of a prefix and extension
combination is 6 digits. You cannot administer a dial access code
with the same first digit as a prefixed extension.
The purpose of the prefix is to identify the call type as an
extension. After digit collection, the prefix digit is removed from
the string of dialed digits. The remaining digits (extension
number) are then processed. A prefixed extension allows the use
of extensions numbers with any dialed string (the extension
length must be specified on the table). The “prefixed extension”
cannot have the same dialed string as the ARS or AAR facility
access code (FAC).
When a dial plan has mixed station numbering, extensions of
various lengths (all with the same first digit) are mapped on the
Dial Plan Analysis table. The system then employs an inter-digit
time-out to ensure that all dialed digits are collected. The
inter-digit time-out may add several seconds to the dial time. An
alternative to the delay required in the time-out mechanism at the
expense of dialing an extra digit is to use prefixed extensions in
the dial plan.
Valid entries Usage