Expanding The Phone System; Line Groups - AT&T Small Business System Speakerphone User Manual

Small business system speakerphone with intercom and caller id call waiting

Table of Contents

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.

NOTE: All 974 features work as described earlier in this manual.

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.

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

Lines in System

Table of Contents

974