Cisco 8841 Administration Guide

Procedure
Step 1 Restart the key expansion module by disconnecting the power source, waiting a few seconds, and then
reconnecting it.
Step 2 As the key expansion module powers up, press and hold Page 1. As the LCD screen turns white, continue
pressing Page 1 for at least one second.
Step 3 Release Page 1. The LEDs turn red.
Step 4 Immediately press Page 2 and continue pressing Page 2 for at least one second.
Step 5 Release Page 2. The LEDs turn amber.
Step 6 Press Lines 5, 14, 1, 18, 10, and 9 in sequence.
The LCD screen turns blue. A spinning icon is displayed in the center of the screen.
The key expansion module resets.
Troubleshoot the Key Expansion Module
Procedure
Step 1 Open a CLI.
Step 2 Enter the following command to enter debug mode:
debugsh
Step 3 Enter ? to see all available commands and options.
Step 4 Use the applicable commands and options to find the desired information.
Step 5 To exit debug mode, press Ctrl-C.
Key Expansion Module Does Not Go Through the Normal Start
Up Process
Problem
When you connect a key expansion module to a phone that is connected to a network port, the key expansion
module doesn't start up.
Cause
• Key expansion module type and the attached key expansion module don't match.
• The phone has more than one type of expansion module connected.
Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide
120
Hardware and Accessory Installation
Troubleshoot the Key Expansion Module

Cisco 8841 Specifications

General

Brand	Cisco
Model	8841
Category	IP Phone
Language	English