AT&T 7406BIS manual Inspect

Inspect

To see who’s calling	1	Press [ Inspect ]
while on a call		● Name and number of caller are shown if from
		extension; [ OUTSIDE CALL ] or other trunk source is
		shown if from outside
	2	Press [ Normal ] to return to display for present call
To see who’s on hold	1	Press [ Inspect ]
while on a call	2	Press [ xxxxx ] of held call
		● You remain connected to present call
To answer a new call	1	Press [ Normal ] (if not already in normal mode)
while on a call		● Finish present call or put on hold
	2	Press [ xxxxx ] of new call