Cisco 7821 Administration Guide

PART IV
Cisco IP Phone Administration
• Cisco IP Phone Security, on page 119
• Cisco IP Phone Customization, on page 125
• Phone Features and Setup, on page 149
• Corporate and Personal Directory Setup, on page 199

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)