Avaya Communication Manager Administrator's Manual page 915

Valid Usage
entries
dac 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 to 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 n.
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 to
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.
ext 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 to 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.
fac Feature access code only — A FAC can be any number from 1 to 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 might 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
# 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).
—
Is made up of a prefix (first digit) that can be a 0 to 9 (* and
Dial Plan Analysis Table
2 of 2
Issue 2.1 May 2006 915