Avaya Communication Manager Administrator's Manual page 1508

Feature Reference
Dial plan
Interactions
All dial-access features and services provided by the system require the dial plan.
•
Attendant Display and Telephone (Voice Terminal) Display
Prefixed extensions display without the prefix. The return call button causes the prefix to dial,
even though it does not display.
•
Integrated Services Digital Network-Basic Rate Interface (ISDN-BRI)
When an ISDN-BRI station dials sufficient digits to route a call, but the call could route
differently if additional digits were dialed, the station does not recognize the Conference or
Transfer buttons. The user must delay dialing for 3 seconds or dial # to indicate that the call can
be routed based on the digits already dialed. The Conference or Transfer buttons then are
recognized and Communication Manager completes the operation.
•
Multifrequency (MF) Signaling
Flexible numbering is supported in countries using R2-MFC trunk signaling without Group II
tones. Different-length extensions can exist as long as the extensions have different first digits.
•
Property Management System (PMS)
PMS products accept only extensions of 5 digits or shorter. Therefore, a customer using PMS
cannot use 6/7-digit extensions.
•
Uniform Dial Plan
The following limitations apply to a DCS environment:
— Extensions that differ in length from the UDP do not distribute to other media servers or
switches.
— You can use only a single length in your UDP.
•
Single-Digit Dialing
•
A prefixed extension is still made up of a prefix and an extension of up to five digits.
•
Mixed station numbering extensions can have 1 - 7 digits.
Multi-Location Dial Plan
When a customer migrates from a multiple independent node network to a single distributed server
whose gateways are distributed across a data network, it may initially appear as if some dial plan
functions are no longer available.
The multi-location dial plan feature preserves dial plan uniqueness for extensions and attendants that
were provided in a multiple independent node network, but appear to be unavailable when customers
migrate to a single distributed server. This feature is available beginning with Communication Manager,
release 2.0.
For example, in a department store with many locations, each location might have had its own switch
with a multiple independent node network. The same extension could be used to represent a unique
department in all stores (extension 4567 might be the luggage department). If the customer migrates to a
single distributed server, a user could no longer dial 4567 to get the luggage department in their store. The
user would have to dial the complete extension to connect to the proper department.
1508 Administrator's Guide for Avaya Communication Manager
November 2003