Cisco 7960 Administration Manual page 139

Chapter 7 Troubleshooting the Cisco IP Phone
Table 7-3 Expansion Module Troubleshooting
Problem
No display on the
7914 Expansion Module
Lighted buttons on the first
7914 Expansion Module are all
red.
Lighted buttons on the second
7914 Expansion Module are all
amber.
Cisco IP Phone Administration Guide for Cisco CallManager 3.2, Cisco IP Phones 7960/7940/7910
78-10453-04
Refer to the following table if you are having difficulty using your
7914 Expansion Module.
Solution
Verify that all of the cable connections are correct.
Verify that you have power to the Expansion Module(s).
Verify that the 7914 Expansion Module is defined in
Cisco CallManager.
Verify that the 7914 Expansion Module is defined in
Cisco CallManager.
Resolving Known Issues
7-27