AT&T MERLIN LEGEND Release 3.1 System Programming Manual page 387

System Renumbering
Set Up Space. This plan is for systems with a need to customize
extension numbers or use extension numbers of varying lengths (one to
four digits). All extensions are assigned 4-digit numbers in the 7000
range. Extension numbers 1000 through 6999 are also available for use
when you renumber.
In all three numbering plans, the system assigns 3-digit extension numbers to
pools (Hybrid/PBX only), calling groups, paging groups, remote access codes,
the Listed Directory Number, park codes, and Idle Line Access (Key and Behind
Switch modes). In addition, the system assigns 9 for Automatic Route Selection
(Hybrid/PBX only) and Idle Line Access (Key and Behind Switch only). Zero (0)
represents a special extension number
primary operator or QCC queue. Any extension number except 0 can be
renumbered.
Extension numbers can be composed of any combination of digits; however, no
number can begin with 0. Trunk numbers (801 to 880) are considered to be
extensions and can be renumbered.
The system does not provide a message to indicate a successful renumber
when either the 2-digit or 3-digit numbering plan is selected. For the Set Up
Space numbering plan, the system provides a message indicating that all
extensions are in the 7000 range.
!
CAUTION:
Select
selecting the numbering plan. If you press Home , extensions may remain
in the forced idle condition (indicated when the LED next to each DSS
button is on). To restore extensions to their normal operating state, restart
the system.
Summary: Select System Numbering Plan
Programmable by
Mode
Idle Condition
Planning Form
Factory Setting
Valid Entries
Inspect
Copy Option
Console Procedure
PC Procedure
¾
on the console or on the PC when you have finished
System manager
All
System idle
Form 2a, System Numbering: Extension Jacks
2-digit
2–digit, 3–digit, Set Up Space
No
No
plan
Select numbering plan
actually a fixed dial code
Select numbering
Programming Procedures
¾
for the
4–15