AT&T 974 User Manual page 97

974CIB_06 4/7/06
There are 12 line group numbers to select, 1-4. Refer to the table below for
the various line-group combination which results from using 16 units and 7
telephone lines.
EXT 11
EXT 12
EXT 13
EXT 14
EXT 15
EXT 16
EXT 17
EXT 18
EXT 19
EXT 20
EXT 21
EXT 22
EXT 23
EXT 24
EXT 25
EXT 26
NOTE: The L1 jacks of all the units must be connected to the same
corresponding telephone line (TL1) to ensure proper functioning of the
phone system.
NOTE: The L2 jacks of all the units must be connected to the same
corresponding telephone line (TL2). Likewise, the L3 jacks to the same
corresponding telephone line (TL3). If the L1- L3 jacks are not properly
connected to their telephone lines, the four-line CO key status indicators
will NOT reflect the actual telephone line status.
NOTE: For all units connected to TL1, the total length of telephone wiring
MUST NOT exceed 600 feet when used in this phone system.
94
3:33 PM Page 94
Telephone Lines in System
TL 1 TL 2 TL 3 TL 4 TL 5 TL 6 TL 7
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
All L1, L2 & L3 jacks are to be
connected to the same corresponding
Telephone Lines (TL1,TL2 & TL3).
Line Group
Number
✔
Group 4
Group 6
✔
Group 4
✔
Group 5
✔
Group 4
Group 6
✔
Group 5
✔
Group 5
✔
Group 7
✔
Group 7
Group 6
✔
Group 4
✔
Group 5
✔
Group 4
Group 6
✔
Group 7
These can be set in Option
Menu ➔ Special Options ➔
Line Group
Example of
Function
Marketing
Procurement
Marketing
Engineering
Marketing
Procurement
Engineering
Engineering
Administration
Administration
Procurement
Marketing
Engineering
Marketing
Procurement
Administration