ESI-50L Administrator’s Manual
Administrator programming: An introduction
A.6
Extension numbering
Extensions
Port card
Digital stations
Analog stations
1
(main board)
100 through 107
108 and 109
2
110 through 117
118 and 119
3
120 through 127
128 and 129
4
130 through 137
138 and 139
Numbering plan selections
Selection 100
(default)
Selection 200
Selection 300
From
To Used for
From
To Used for
From
To Used for
100
139 Extensions
200
239 Extensions
300
339 Extensions
280
289 Departments
380
389 Departments
470
479 Departments
300
489 Guest/info mboxes
100
199 Guest/info mboxes
100
289 Guest/info mboxes
400
489 Guest/info mboxes
Common to all ESI-50L numbering plan selections
From
To Used for
From
To Used for
0
— Operator
71
76 CO line grps.
490
499 Q & A mailboxes
8
— CO line grp.
500
— Broadcast mailbox
9
— CO line grp./ARS
501
516 Group mboxes
— Call pickup
533
542 Cascade notif. mboxes
#
— Paging
600
699 System speed-dial
