AT&T SYSTEM 25 Manual page 136

SLAC
Switching Between Parties While Extending a Call
You can switch back and forth between the caller (source) and the called party (destination)
by using and
[SOURCE]
1 Press
The light next to [SOURCE] turns off. The light next to [DEST] winks.
Press
2
The light next to [DEST] turns off. The light next to [SOURCE] winks.
If the called party will take the call, press
3
or
If the called party will not take the call, press
with the caller.
4 Hang up.
While Extending a Call
Conferncing
If a conference is needed to connect you to both parties:
1 Press
All three parties can speak.
2 To drop yourself out of the call, press
You will drop out of the call.
or
To drop all parties out of the call, press
All parties will be disconnected.
buttons. To move between parties:
[DEST]
to go back to the caller.
[SOURCE]
to go back to the called party.
[DEST]
.
[JOIN]
[RELEASE].
and speak
[CANCEL]
or hang up.
[RELEASE]
[FORCED RELEASE].
Extending Calls (Announced)
3-19