AT&T SYSTEM 25 Manual page 108

This feature applies to multiline voice terminals only.
System users with a Built-in-Speakerphone (BIS) voice terminal or another type of
multiline voice terminal with a Hands-Free Unit (HFU) can use SPEAKERPHONE
to place or answer calls without lifting the handset. These units provide two-way
communication (listen and talk).
Placing a Call
Without Lifting the Handset
1 Press
The lights next t
2 Dial the telephone number.
When the other party answers, begin talking.
3
NOTE:
hearing you, press
The light next to this button will turn off.
When you want to resume your conversation with the other
party, press
The light next to this button will turn on.
Answering a Call Without Lifting the Handset
1
Press
The lights next to [SPEAKERPHONE] and [MICROPHONE] turn on.
2 Begin talking.
NOTE: lf
you, press
The light next to this button will turn off.
When you want to resume your conversation with the caller,
Press
The light next to this button will turn on.
Ending a Speakerphone Call
Press
The lights next to [SPEAKERPHONE] and [MICROPHONE] turn of.
Speakerphone
and listen for dial tone.
[SPEAKERPHONE]
[SPEAKERPHONE] and [MICROPHONE] turn on.
O
If you want to temporarily keep the other party from
[MICROPHONE]
[MICROPHONE]
[SPEAKERPHONE]
.
you want to temporarily keep the caller from hearing
[MICROPHONE] .
again.
[MICROPHONE]
[SPEAKERPHONE] .
.
again.
2-95
Speakerphone