Cisco 7821 Installation Guide

Installation Guide for Cisco IP Phone with Multiplatform Firmware
3
Connect and Power Up a Conference Phone 7832
Basic Installation
Connect and Power Up a Conference Phone 7832
Connect a conference phone with Power over
Ethernet (PoE).
Connect a conference phone with Power Injector.
A conference phone needs power from one of following power sources:
• Power over Ethernet (PoE), which your network supplies.
• Cisco IP Phone Power Injector.

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)