AT&T MERLIN LEGEND Release 4.0 Feature Reference page 552

Feature Reference
In Release 1.0, when using single renumber to assign a specified extension
number, the system is forced idle during the renumbering process. In Release
1.1 and later, the system is not forced idle when renumbering telephones,
Automatic Route Selection access code, calling groups, Idle Line Access Code,
Listed Directory Number, paging groups, park zones, Pools, and remote access
code. However, in Release 1.1 and later, when you are renumbering an
extension, an adjunct, or a trunk, the individual facility is forced idle during the
renumbering process.
Block Renumbering
Block renumbering can be used only when the extension numbers you are
changing from are sequential and the extension numbers you are changing to
are sequential. Block renumbering can be used to assign extension numbers to
a group of extensions, adjuncts, or lines.
When you are renumbering extensions using block renumbering, the system is
forced idle during the process.
DSS Renumbering
System renumbering is used to assign the beginning extension number in a
page . A page is the range of extension numbers that is assigned to a DSS. A
single DSS can have three pages of extension numbers, with 50 extension
numbers for each page, for a total of 150 extension numbers. When two DSSs
are connected, each page's capacity is increased to 100 extension numbers.
The two connected DSSs can have three pages of extension numbers, for a
total of 300 extension numbers.
Page buttons work like Shift keys on a keyboard. When the operator presses a
Page button, he or she selects a page of the DSS, which corresponds to a
range of 50 (for a single DSS) or 100 (for two connected DSSs) extension
numbers. The factory settings for Page buttons are as follows: the Page 1
button begins with extension 0, the Page 2 button begins with 50, and the Page
3 button begins with 100.
If 2 DSSs are attached, the factory setting must be changed so that the
difference between extensions assigned to the range is at least 100. For
example, assign the Page 1 button to begin with extension 10, the Page 2
button to begin with extension 110, and the Page 3 button to begin with
extension 210. Page button assignments should be sequential.
The beginning extension number associated with each Page button is the same
for all operator positions and cannot be programmed differently for individual
operator positions.
552
System Renumbering