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Control Unit
0
1
S t a t i o n s
2
2 0 0 - 2 4 3
3
MFMs/7500Bs
4
4 0 0 - 4 4 3
5
6
Main Pooll
7
70
A
8
9
Figure 2-4
Three-Digit Numbering Plan
A = 800—Listed Directory Number (QCC Queue)
B = 889—Remote Access
See the CMS documentation for more
information on reassigning numbers for
CMS agent splits.
Operator Console (not flexible)
0
S
t
a
t
i
1
0
0
-
MFMs/7500Bs
3 0 0 - 3 9 9
T r u n k s
8 0 1 - 8 8 0
ARS Acces (Hybrid/PBX Mode) Idle LIne Access
9
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 resewed 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 reserved 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.
Note: If your system includes the Call Management System (CMS), it assigns
extension numbers to agent splits.
o
n
s
1
9
9
C a l l i n g
G r o u p
7 7 0 - 7 9 1 , 7 9 2 0 - 7 9 2 9
P a r k
B
8 8 1 - 8 8 8
P a g e
7 9 3 - 7 9 9
P o o l s
8 9 0 - 8 9 9
System Numbering 2-23
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