Yealink T21P

2
HANDSET FEATURES
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Register failed Call Mute
Registering Call Forward/
Forwarded Calls
Handset mode Ringer volume is 0
Headset mode Missed Calls
Hands-free speakerphone mode Received Calls
Voice Mail Placed Calls
Call Hold Do Not Disturb