Instruction manual

Features
3-Digit Numbering Plan
The 3-digit numbering plan is designed for companies with more than 50
extensions. Figure 35 shows the numbers automatically assigned by the
system when you renumber the system using the 3-Digit numbering plan.
0
1
2
3
4
5
6
7
8
9
Operator Console (not flexible)
0
Stations
100---199
Stations
200---243
244-299
MFMs
300---399
MFMs
400---443
444-499
500-599
600-699
Main Pool
70
71-76
Calling Group
770---791, 7920---7929
Page
793---799
800*
Trunks
801---880
Park
881---888
889**
Pools
890---899
ARS Access (Hybrid/PBX Mode)/Idle Line Access
9
* Listed Directory Number (QCC Queue)
** Remote Access
Figure 35. 3-Digit Numbering Plan
Extensions default to a 3-digit extension number beginning with 100 and ending
with 243.
The extension numbers shown for MFM (300-443) are reserved for digital
station jacks. These numbers are automatically assigned by the system to
adjuncts (such as a data terminal, answering machine, or fax) connected to an
MLX telephone using an MFM or 7500B Data Module. The extension number
assigned to the MFM adjunct is the extension number assigned to the MLX
telephone increased by 200. For example, if the extension assigned for an MLX
telephone is 125, the extension for the adjunct on that telephone is 325. In this
example, a call can be made to the telephone by dialing 125 or to the adjunct
by dialing 325.
NOTE:
■ The extension numbers are reserved whether or not an MFM adjunct
is connected to an MLX telephone.
■ If you renumber the extension number of the telephone, the system
does not automatically change the extension number of the MFM.
472
System Renumbering