Lucent Technologies MERLIN LEGEND Release 6.0 System Planning Manual page 86

MERLIN LEGEND Communications System Release 6.0
System Planning 555-660-112
2 Control Unit Configuration
Numbering the System
System Renumbering
The selection of a numbering plan depends on the customers needs. Each of the
systems numbering plans (2-digit, 3-digit, and Set Up Space) allows you to
renumber all or selected extensions. If you do not need to renumber extensions,
skip to the last section of this chapter, Updating Planning Information.
In Release 6.0 and later systems (Hybrid/PBX mode only), the Uniform Dial Plan
(UDP) allows you to choose non-local dial plan numbering to specify the
numbering of extensions connected to remote networked systems and allow
users on your system to access those extensions as if they were connected to
your own system. Only ranges of extensions can be specified.
NOTES:
1. If the system uses a combination of DID and non-DID extensions, it is
recommended that two non-local dial plan ranges be administered (one
for the DID extensions and one for the non-DID extensions).
2. If one of the switches in a private network is renumbered, all other
switches in the network may also have to be changed to accommodate
the new numbers.
! !
CAUTION: CAUTION:
Before administering the network ranges, set up the local dial plan. If the
ranges are administered in the network, and then 2-digit, 3-digit, or Set Up
Space defaults are then used, all network ranges on that switch are erased.
MERLIN LEGEND Communications System non-local dial plan numbering
supports extensions up to 4 digits long (2-, 3-, or 4-digit dial plans), while
DEFINITY Communications Systems have 5-digit extension numbers. There are
two methods you can use to number DEFINITY non-local dial plan ranges.
Choose one of the following techniques, depending upon the actual extension
numbers you are entering in ranges and potential conflicts:
Specify ranges that include the first four digits in the extension numbers.
Each number you enter in the procedure represents 10 numbers in the
remote system. For example, an extension range entered as 4321 through
4322 represents remote extensions 43210 through 43220. Users actually
dial five digits. The local system recognizes the number range by the first
four digits.
Enter the last four digits and use UDP Routing to prepend the first digit in
the DEFINITY extension number. The local system recognizes the number
range using the last four digits. Users dial only the last four digits. This
method must be used for DID trunks that terminate on a MERLIN LEGEND
system which have numbers in the DID range that terminate on a
DEFINITY system. Contact the Network Engineering Group for assistance
2
Issue 1
February 1998
Page 2-31