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EXPANDING THE PHONE SYSTEM
EXPANDING THE PHONE SYSTEM
EXPANDING THE PHONE SYSTEM
When you combine two or more 945/974/984/944/955/964 phones you
create an interacting system where phones share lines. If you have only
945/974/984 phones on your phone system, you can have up to 16 phones
and up to 19 telephone lines. If you have one or more 944/955/964 phones
in your phone system, you can have up to 12 phones and up to 15 telephone
lines. The system can be expanded with or without Centrex service.
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NOTE: All 974 features work as described earlier in this manual.
Line Groups
When phones share lines, the LINE lights let users at different extensions
know when a specific line is in use. For accurate LINE lights, the same
lines must be connected to each extension in the Line Group, and they must
have the same incoming telephone number at each extension.
The chart below shows 16 extensions, each sharing the first three lines,
but being assigned to different Line Groups based on other shared or
private lines.
Lines in System
Intercom Extensions
L1 L2 L3 L4 L5 L6 L7
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 ✔✔✔ ✔
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