Cisco 7821 Manual

Mute Your Call:
While you are on a call, you can mute the audio, so that you can hear the other person, but they cannot
hear you.
Procedure
Step 1
Press Mute .
Step 2
Press Mute again to turn mute off.
Put a Call on Hold
You can put an active call on hold and then resume the call when you're ready.
Procedure
Step 1
Press Hold .
Step 2
To resume a call from hold, press Hold again.

Cisco 7821 Specifications

General

Resolution	396 x 162 pixels
Lines	2
Speakerphone	Yes
Display	3.5-inch (89 mm) monochrome display
Ethernet Ports	2 x 10/100 Ethernet ports
Power	IEEE PoE Class 1
Headset Port	Yes
Protocols	SIP
Audio Codecs	G.711, G.722, G.729, iLBC
Weight	0.9 kg (1.98 lb)