Avaya Communication Manager Administrator's Manual page 1674

Feature Reference
Single-Digit Dialing and Mixed Station Numbering
When using a dial plan like the one above, which includes both prefixed and non-prefixed extensions,
dialing 567 instead of 4567 will ring an administrative extension instead of a room.
The dialing delays, which may not be perceived by hotel guests, will occur when dialing 6 and 7. The
server must wait for the 3- to 9-second interdigit timeout to expire before the call will be sent. The user
can preempt the timer by pressing the # key after the number has been dialed.
NOTE:
When using prefixed extensions, the extension that shows up on a display phone does not
show the prefix. The prefix will not show up on CDR reports. If extension number 3315 is
prefixed with a 6 and the dial plan shows 3xxx for extensions, it is possible to dial either
3315 or 63315 to reach extension 3315. If the dial plan was changed to remove the entry
for extensions in the 3xxx block, then 3315 could be reached only by dialing 63315.
Considerations
•
Mixed Station Numbering allows guest room numbers and room extensions to be the same.
•
You cannot assign prefixed extensions longer than seven 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, via 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.
•
You should administer the Short Interdigit Timeout on the
screen to ensure that the delay between the end of dialing and call completion is not too long.
Interactions
•
Attendant Display and Telephone Display
Prefixed extensions display without the prefix. The return call button causes the prefix to dial,
even though it does not display.
•
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 (UDP)
The following limitations apply to a DCS environment:
— Extensions that differ in length from the UDP do not distribute to other servers running
Communication Manager.
— If the first two digits of an extension correspond to the floor number, floors cannot be
serviced by more than one media server/switch.
1674 Administrator's Guide for Avaya Communication Manager
Feature-Related System Parameters
November 2003