Understanding The Dial Plan - Avaya Communication Manager Administrator's Manual

Understanding the Dial Plan

Your dial plan tells your system how to interpret dialed digits. For example, if you dial 9 on your
system to access an outside line, it is actually the dial plan that tells the system to find an
external trunk when a dialed string begins with a 9.
The dial plan also tells the system how many digits to expect for certain calls. For example, the
dial plan might indicate that all internal extensions are 4-digit numbers that start with 1 or 2.
Let us take a look at an example dial plan so you'll know how to read your system's dial plan.
The following figure shows an example of a simple dial plan.
Figure 14: Dial Plan Analysis Table screen
display dialplan analysis
Dialed
String
The Dial Plan Analysis Table defines the dialing plan for your system.
The Call Type column in the Dial Plan Analysis Table indicates what the system does when a
user dials the digit or digits indicated in the Dialed String column. The Total Length column
indicates how long the dialed string will be for each type of call. For example, this dial plan
shows that when users dial a 5-digit number that starts with 3, they are dialing an extension.
The Dial Plan Analysis Table in our example contains the following call types:
Attendant (attd) — Defines how users call an attendant. Attendant access numbers can be
●
any number from 0 to 9 and contain 1 or 2 digits.
In our example figure, the system calls an attendant when users dial 0.
Total Call
Length Type
00 2 attd
1 3 dac
2 4 ext
3 4 ext
3 1 aar
4 1 ars
4 5 ext
5 5 ext
5 7 ext
6 5 ext
7210 7 ext
8 7 ext
9 1 fac
* 3 fac
# 3 fac
DIAL PLAN ANALYSIS TABLE
Dialed Total Call
String Length Type
Understanding the Dial Plan
Page 1 of x
Percent Full: 7
Dialed Total
String Length Type
Issue 2.1 May 2006
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