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Administrator's Guide

ManualsBrandsAvaya ManualsBasic Administration ToolsAvaya MultiVantage Software Release 1.2
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Dial plan
Issue 5 October 2002 1657555-233-506
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 the switch 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 the switch; 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.
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 the switch 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.