AT&T SYSTEM 25 Manual page 140

SLAC
Typical Displays:
Display examples for Extended Calls are shown below.
An outside party asks to be connected to B. Taylor on extension 373. Four calls are waiting
in the attendant queue. Screen 1 has the following information:
After you press
[START]
the "extend" condition is active.
If you press
[SCROLL],
When you dial the inside number, Screen 1 displays it.
Screen 2 is unchanged.
Pressing (or
[RELEASE]
except for the number
OUTSIDE
to extend the call, Screen 1 changes;
&
Screen 2 displays the calling party data.
OUTSIDE
& 3 7 3 T a y l o r , B 4
OUTSIDE
hanging up if you have Automatic Release) causes Screen 1 to go blank
of calls in queue.
4
the "&" symbol indicates that
4
&
&
4
Extending Calls (Unannounced) 3-23