Cisco 8841 Administration Guide

CHAPTER 7
Cisco IP Phone Key Expansion Module
• Cisco IP Phone Key Expansion Module Setup Overview, on page 107
• Key Expansion Module Power Information, on page 109
• Connect a Key Expansion Module to a Cisco IP Phone, on page 110
• Connect Two or Three Key Expansion Modules to a Cisco IP Phone, on page 114
• Auto Detection of Key Expansion Modules, on page 117
• Configure the Key Expansion Module from the Phone Web Page, on page 118
• Access Key Expansion Module Setup, on page 118
• Allocate a Key Expansion Module Type, on page 119
• Allocate a Key Expansion Module Type with the Phone Menu, on page 119
• Reset the Single LCD Screen Key Expansion Module, on page 119
• Troubleshoot the Key Expansion Module, on page 120
• Key Expansion Module Does Not Go Through the Normal Start Up Process, on page 120
Cisco IP Phone Key Expansion Module Setup Overview
Figure 4: Key Expansion Module with Single LCD Screen
Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide
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Cisco 8841 Specifications

General

Resolution	800 x 480 pixels
Audio	Wideband audio
Bluetooth	No
Ethernet	10/100/1000 Mbps
PoE	IEEE 802.3af compliant
Connectivity	Ethernet
Buttons	4 programmable line keys
Speakerphone	Full-duplex speakerphone
Headset Jack	Yes, RJ9
Codecs	G.711, G.722, G.729a, iLBC
Power Options	PoE
Network Interfaces	Dual Gigabit Ethernet ports
Security	Secure boot, 802.1X authentication, secure credential storage
Dimensions	40 mm
Weight	2.5 lb (1.1 kg)