Plug it into the AUX on a 7960 and above phone with a power block.
Configure Expansion Module Information in CCM.
Get latest firmware load.
Configure Line Key: Using the Cisco CallManager Administration tool, the system administrator assigns one or more DN to buttons on the Cisco Unified IP Phone Expansion Module 7914 as desired. The line key will show the appropriate designation.
Speed Dial: Each button not used as a line (DN) key can be programmed as a speed-dial key in the same manner as the Cisco Unified IP Phones 7960G, 7961G, 7970G and 7971G-GE. You can use the Cisco Unified IP Phone User Options Web page to program a speed-dial number and label the associated button with an appropriate name.
Hope this helps.
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