AT&T MERLIN LEGEND Installation & Maintenance Manual page 679

Two-Digit Numbering Plan
0
1
2
3
4
5
6
Main Pool
70
7
A
8
9
Figure K-1 Two-Digit Numbering Plan
A = 800—Listed Directory Number (QCC Queue)
B = 889—Remote Access
The numbers in the figure are arranged in blocks according to
the first digit. The type of equipment, jack, or feature to which
they are assigned is indicated in the block.
Each of the first 58 station jacks is assigned a two-digit extension
number beginning with extension 10 and ending with extension
67. The rest of the stations (68–144) are assigned four-digit
extension numbers 6800–6885. Extra adjuncts are assigned as
extensions 6900–6985.
The extension numbers shown for MFMs/7500Bs (710-767) are
reserved for digital station jacks. These numbers are
automatically assigned by the system to ISDN 7500B Data
Modules or to adjuncts (such as a data terminal, answering
machine, or fax) connected to an MLX telephone using a Multi-
Function Module (MFM).
K-2 Two-Digit Numbering Plan
Operator Console (not flexible)
0
Stations
10—19
Stations
20—29
Stations
30—39
Stations
40—49
Stations
50—59
Stations
60—67
MFMs/7500Bs (MLX Adjuncts)
710—767
Lines
801—880
ARS Access (Hybrid / PBX Mode) / Idle Line Access
9
Extra Stations
Extra Adjunct
6800—6885 6900—6985
Calling Group
770—791, 7920—7929
Park
B
890—899
881—888
Page
793—799
Pools