Teo 6210 ISDN Phone - Manual (Page 8)

4 Tone Commander 6210/6220 User Guide
14) Conf (Conference) Key – adds other parties to a conference call
(page 9).
15) Drop Key – removes the last party added to a conference call, or
disconnects you from a call and returns new dial tone when not in
conference mode (page 10).
16) Hold Key – places a call on hold (page 8).
17) Microphone – used for hands-free (speakerphone) calling; located
in front of the Hold key on the bottom of the telephone.
18) Handset/Headset Jack – a jack on the side of the telephone
connects to the handset or a standard headset.