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Feature Reference
Dial plan
Administrator’s Guide for Avaya Communication Manager 1507
November 2003
Detailed description
The dial plan provides information to Communication Manager on what to do with dialed digits. A table
defines the intended use of a code beginning with a specific first digit or pair of digits. These digits tell
the system how many digits to collect before processing the full digit string.For example, a digit string
beginning with 8 may tell the system to wait for 4 more digits because this is the first digit of a 5-digit
internal extension. For more information about the tables that define the dial plan, see:
•
Dial Plan Analysis Table
•
Dial Plan Parameters
You can also administer a UDP as part of the dial plan to be shared among a group of servers or media
servers. For more information, see
Uniform Dial Plan . So that calls route to the desired server, a UDP
requires the following information:
•
A PBX code, which represents the first 1 to 5 digits of an extension and can range from 0 to
9xxxxxx with a maximum of 50,000 PBX codes on DEFINITY R or 20,000 PBX codes on
DEFINITY SI/DEFINITY CSI.
•
An RNX, which is associated with the PBX code and is used to select an AAR pattern for the call.
This information is required for each PBX code. The 3-digit RNX can be an AAR location code
or, for ENP calls, an ENP code.
•
A PBX ID (1 to 63), which represents a specific server/switch (optional).
•
Whether or not the PBX code is local to this system (optional).
Considerations
•
You cannot assign prefixed extensions longer than five digits (including prefix) to intercom lists.
•
A TAC and an extension can share a first digit only if the extension is shorter than the TAC.
•
Although extensions with the same first digit can have different lengths, data-channel extensions
must have the maximum number of digits to avoid timeout problems for data calls that
Communication Manager automatically sets up, for example, the CDR link.
•
An extension and a FAC can share the same first digit only if the extension is longer as long as
they are not used for AAR/ARS faxes. These extensions work only within Communication
Manager; they do not work as remote UDP extensions.
•
When you design your dial plan or add new information to your dial plan, be careful if you assign
the same first digit to more than one FAC. Your system may need to distinguish between FACs
with the same first digit by using the
Short Interdigit Timer
field on the Feature Related System
Parameters screen.