Cisco 8811 Administration Guide

Sample CallInfo Output 235
Sample LineInfo Output 235
Sample ModeInfo Output 236
CHAPTER 12 Troubleshooting 237
General Troubleshooting Information 237
Startup Problems 239
Cisco IP Phone Does Not Go Through the Normal Startup Process 239
Cisco IP Phone Does Not Register with Cisco Unified Communications Manager 240
Phone Displays Error Messages 240
Phone Cannot Connect to TFTP Server or to Cisco Unified Communications Manager
240
Phone Cannot Connect to TFTP Server 240
Phone Cannot Connect to Server 241
Phone Cannot Connect Using DNS 241
Cisco Unified Communications Manager and TFTP Services Are Not Running 241
Configuration File Corruption 241
Cisco Unified Communications Manager Phone Registration 242
Cisco IP Phone Cannot Obtain IP Address 242
Phone Not Registering 242
Phone Reset Problems 243
Phone Resets Due to Intermittent Network Outages 243
Phone Resets Due to DHCP Setting Errors 243
Phone Resets Due to Incorrect Static IP Address 243
Phone Resets During Heavy Network Usage 244
Phone Resets Due to Intentional Reset 244
Phone Resets Due to DNS or Other Connectivity Issues 244
Phone Does Not Power Up 244
Phone Cannot Connect to LAN 245
Cisco IP Phone Security Problems 245
CTL File Problems 245
Authentication Error, Phone Cannot Authenticate CTL File 245
Phone Cannot Authenticate CTL File 245
CTL File Authenticates but Other Configuration Files Do Not Authenticate 246
ITL File Authenticates but Other Configuration Files Do Not Authenticate 246
Cisco IP Phone 8800 Series Administration Guide for Cisco Unified Communications Manager
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Contents

Cisco 8811 Specifications

General

Ethernet Ports	2 x 10/100/1000
Lines Supported	5
Speakerphone	Yes
Headset Port	Yes
USB Port	No
Bluetooth	No
Wi-Fi	No
Resolution	800 x 480 pixels
PoE	Yes, IEEE 802.3af Class 2
Audio Codec Support	G.711, G.722, G.729, iLBC
Protocols	SIP
Display	5-inch, 800 x 480 pixels
Headset Jack	RJ9
Weight	1.1 kg