OfficeServ 7400 INSTALLATION
TECHNICAL MANUAL PART 8 MAY 2010
8.3
8.4 NUMBERING EXTENSIONS AND C.O. LINES
Once the OfficeServ 7400 system is booted, the MP40/LP40 board verifies the boards
mounted on each slot and saves this information as the default configuration of the system.
According to the setting of the S2 switch (SW6, SW7, SW8) of the MP40 board, the OfficeServ
7400 system assigns 3 or 4 digits to C.O. lines, extensions, and extension groups. Refer to
Section 4. Mounting and Replacing Boards of this manual for details on setting the S2 switch.
C.O. line numbers from 701 or 7001 are sequentially assigned to the C.O. line board installed
on slot 1 of the main cabinet, and following numbers are continuously assigned to the next
C.O. line board of the next slot. However, only the numbers from 701 to 799 are assigned
when using 3 digits. For example, if an 8TRK/8TRK2 board is mounted on slot 1 and an
8TRK/8TRK2 board is mounted on slot 2, 701 is assigned to the C1/S1/P1 port and 712 is
assigned to the C1/S2/P4 port. (Twelfth C.O. line is assigned to the fourth port of the second
slot of the first cabinet.)
Extension numbers from 201 or 2001 are sequentially assigned to the extension board
mounted on slot 1 of the basic cabinet, and following numbers are continuously assigned to
the next extension board of the next slot. This numbering process continues until the
extension numbers are assigned to all extensions. However, only the numbers from 201 to
349 are assigned when using 3 digits.
The first port of the first 8DLI or 16DLI2 board is assigned to the attendant group as default.
All C.O. lines ring this attendant extension unless the default value is changed. Thus, a phone
with an LCD panel should be connected to the last port of the first 8DLI board.
500-579 or 5000-5079 is assigned to an extension group.
The numbers of C.O. lines, extensions, or extension groups can be changed using the MMC
724 program.
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