Aastra 622 Meridian Expansion Module
![Aastra 622 Meridian Expansion Module](https://s.turbifycdn.com/aah/headsetzone/aastra-622-meridian-expansion-module-15.png)
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The M622 Meridian Add-On Module is compatible with both the M6310 and M6320.
Features:
- 22 keys for feature access or directory numbers
- Integrated wall mount kit
- LCD indication for feature or extension in use
- Expandable to up to 2 units together
- Compatible with 6320