Cisco 8831 Administration Guide

Call, Device, and Network information 123
Troubleshooting 123
Startup problems 123
Cisco Unified IP Phone does not go through normal startup process 124
Cisco Unified IP Phone does not register with Cisco Unified Communications
Manager 124
TFTP server settings 125
IP addressing and routing 125
DNS settings 125
Cisco Unified Communications Manager and TFTP servers are not running 125
Configuration file corruption 125
Cisco Unified Communications Manager phone registration 126
Cisco Unified IP Conference Phone 8831 cannot obtain IP address 126
Cisco Unified IP Conference Phone 8831 resets unexpectedly 126
Physical connection problems 127
Intermittent network outages 127
DHCP setting errors 127
Static IP address setting errors 127
Voice VLAN setup errors 128
DNS or other connectivity errors 128
Power connection problems 128
Audio and display problems 128
Display is wavy 128
Audio problems 129
Choppy speech or sound 129
Choppy speech or sound when using wireless microphones 129
Echo on the far end 129
Audio level 130
Audio quality 130
No audio between units 130
No audio from external wireless microphones 131
Conference call reception problems 131
General troubleshooting information 131
Troubleshooting procedures 133
Check TFTP settings 134
Cisco Unified IP Conference Phone 8831 Administration Guide for Cisco Unified Communications Manager
9.0
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Contents

Cisco 8831 Specifications

General

Headset Port	No dedicated headset port
Wireless	No
Bluetooth	No
USB Port	No
Video Support	No
Audio	Full-duplex speakerphone
Connectivity	10/100 Ethernet
Power	Power over Ethernet (PoE)
Network Protocols	SIP
Weight	1.1 kg
Audio Codecs	G.711, G.722, G.729, iLBC
Network Ports	2 x Ethernet ports
Security	TLS