Avaya Communication Manager Administrator's Manual page 771

Valid
entries
dac
ext
fac
pext
Administrator's Guide for Avaya Communication Manager
November 2003
Usage
Dial access code — Allows you to use trunk access codes (TAC) and feature access
codes (FAC) in the same range. Dial access codes can start with any number from
0–9, * or # and can contain up to 4 digits.
If an extension entry and a DAC entry have the same Dialed String, the extension
entry can be longer than the DAC entry only if all of the trunk groups covered by
that DAC entry have Dial Access on the Trunk Group screen set to "no."
You can use the DAC to activate or deactivate a Communication Manager feature or
to seize a trunk from a trunk group, or both. In the first case, the DAC functions as a
FAC, in the second as a TAC. For example, you can define the group 300–399 for
dial access codes, and allow both FAC and TAC in that range.
You can use 4-digit DACs for ordinary trunk access, but they do not work for
attendant control of trunk groups, trunk-ID buttons, or DCS, and only the last 3
digits of the codes can be recorded in CDR records. See also the description below
for fac.
Primary extension — Defines extension ranges that can be used on your system.
Extension can have a first digit of 0 through 9 and can be 1 – 7 digits in length.
Extension cannot have the same first digit as a 1-digit ARS or AAR feature 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.
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.
—
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).
Screen Reference
Dial Plan Analysis Table
771