AT&T SYSTEM 25 Manual page 157

Placing an Outside Call for Someone and Calling the Party Back
1
Lift the handset and listen for dial tone.
2 Dial the outside call.
3 Announce the call.
4 Press
5 Dial the person for whom you placed the call and announce the call.
6 Press
NOTE: If
to press
[LOOP]
Display:
Typical display for an inside call shows the PDC and name of the called party. The digit 3
indicates that three calls are waiting in the queue.
Typical display for an outside call shows the dialed digits and the number of calls in the
queue.
3-40 Attendant Features
and listen for dial tone.
[START]
and then hang up.
[RELEASE]
your console has the Automatic Release feature, you do not have
to drop out of the call. Hanging up or pressing a new
[RELEASE]
button will automatically drop you from the call.
318 Schur,C
9 1 2 1 2 5 5 5 1 2 1 2 7
3