Instruction manual

Control Unit
0
Operator Console (not flexable)
0
1
Stations
100—199
2
Stations
200—243
3
MFMs/7500Bs
300—399
4
MFMs / 7500Bs
400 — 443
5
6
7
Main Pool
Calling Group
Page
70
770— 791, 7920—7929
793—799
8
A
Lines
Park
801—879
B
Pools
881—888
890—899
9
ARS Access (hybred/PBX Mode)/Idle Line Access
9
Figure 2-4 Three-Digit Numbering Plan
A = 800—Listed Directory Number
B = 889—Remote Access
All stations are assigned a 3-digit extension number beginning with extension
100 and ending with extension 243.
The extension numbers shown for MFMs/7500Bs (300–443) are reserved for
station adjuncts connected to an MLX telephone such as a data terminal
connected through an ISDN 7500B Data Module or an answering machine
connected using an MFM. The extension numbers are resewed whether or not
an adjunct is connected to the telephone.
The actual extension number assigned to the adjunct is the extension number
assigned to the MLX telephone increased by 200, For example, if the extension
number assigned to an MLX telephone is 125, the extension number assigned
to the adjunct on that telephone is 325. In this example, a call can be placed to
the telephone by dialing extension 125 or to the adjunct by dialing extension
325. If you reassign the-extension number of the telephone, the system does not
automatically change the extension number of the MFM or data module.
See the CMS documentation for more
Note: If your system includes the CMS, it assigns extension numbers to agent
information on reassigning numbers for
CMS agent splits.
splits.
System Numbering 2-21