Cisco 7821 Installation Guide

Installation Guide for Cisco IP Phone with Multiplatform Firmware
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Wall Mount Your 7861 Phone 22
Remove 7861 Phone from the Wall Mount 23
Wall Mount Your 8800 Series Phones 24
Remove 8800 Series Phone from the Wall Mount 24
Wall Mount Your 8851 or 8861 Phone with a KEM Attached 25
Remove 8800 Phone from the Wall Mount 27
Adjust the Handset Rest 28
Technical Details 29
Physical and Operating Environment Specications 30
Phone Power Requirements 32
Power Outage 35
Power Reduction 35
Power Negotiation Over LLDP 35
C H A P T E R 5

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)