Cisco 6821 User Manual

Cisco Headset 531 and 532 172
Cisco Headset 561 and 562 174
Upgrade the Headset 500 Series Firmware 177
Cisco Headset 500 Series Setup 177
Replace your Cisco Headset 500 Series ear pads 179
Cisco Headsets 700 Series 180
Cisco Headset 730 180
Upgrade the Headset 730 Firmware 181
Find Details of Your Headset 730 on the Phone 182
Third Party Headsets 183
Audio Quality 183
Wired Headsets 183
Standard Headsets 184
Connect a Standard Headset 184
USB Headsets 184
Connect a USB Headset 185
E-Hookswitch Headset 185
Swap Headsets While on a Call 185
Cisco 6800 Series Key Expansion Module Setup Overview 185
Key Expansion Module Buttons and Hardware 186
Key Expansion Module Power Information 187
Find Information about the Key Expansion Module of Your Phone 187
View the UDI Information of the Key Expansion Module 188
Adjust the Contrast of the Key Expansion Module 188
Change the Display Mode of the Key Expansion Module from the Phone 189
Add Features or Menu Shortcuts to Key Expansion Module Line Keys 189
Remove Features or Menu Shortcuts from Key Expansion Module Line Keys 189
Wall Mount Kit 190
Wall Mount Kit Components 190
Install the Cisco IP Phone 6821 Multiplatform Phones on a Wall 191
Install a Cisco IP Phone 6841, 6851, 6861, or 6871 with the Wall Mount Kit 195
Adjust the Handset Rest 198
Product Safety and Security 201
CHAPTER 8
Cisco IP Phone 6800 Series Multiplatform Phones User Guide
xii
Contents

Cisco 6821 Specifications

General

Resolution	320 x 240 pixels
Speakerphone	Yes
Headset Port	Yes
Protocols	SIP
USB Port	No
Wireless	No
Bluetooth	No
Video Support	No
Conference Capabilities	Yes
Wall Mountable	Yes
Display	3.5-inch grayscale
Ethernet	10/100 Ethernet
Line Keys	2
PoE	IEEE 802.3af Power over Ethernet (PoE)
Codecs	G.711, G.722, G.729, iLBC
Weight	2.0 lb (0.91 kg)