Aastra Meridian M522 Expansion Module (NT4X43AA)
The Aastra Meridian M522 Expansion Module expands the capability of your Aastra M5216 or M5316 series phone by providing 22 programmable buttons that can be configured for quick line or feature access.
- 22 programmable keys
- LCD indicators
- Up to 2 expansions can be used per phone, for a total of 44 additional programmable buttons
- Includes Atlas 1-Year Warranty with Extended Warranty options available!
- Compatible with the Aastra Meridian M5216 and M5316 model phones