Nortel Meridian M522 Add-On Module NT4X43AA

Nortel Meridian M522 Description: The Nortel M522 is an add-on expansion module designed to work with the Nortel Meridian Centrex M5216 and M5316 phones.  The M522 (NT4X43AA) adds an additional 22 programmable buttons to your phone to be used as line appearances, extensions, or feature keys.  The LCD indicators inform you of the status of each line. Please note, you can add up to two M522 modules to your M5216 or M5316 phone. Nortel NT4X43AA Features: 22 Programmable Buttons LCD Display Indicators Color: Black Compatibility: Nortel Meridian Centrex M5216 Phone M5316 Phone Includes: (1) Nortel Meridian M522 Module (NT4X43AA)