AT&T System 25 - Manual (Page 40)

Placing Calls (Continued)
Display
Typical display for an inside call shows the extension number
and name of the person called. The digit “3” indicates that three
calls are waiting in the queue.
318 Davis,R 3
Typical display for an outside call shows the dialed digits and
the number of calls in the queue.
912125551212 7
36