Mitel Aastra M685 Expansion Module for 6865, 6867 and 6869 Phones,
- Display - 4.3
- Line Keys - 28 keys with LED
- Daisy Chain - Can be daisy chained with the M680 for a combined total of up to 3 modules
- Compatible Phones - Supported on the 6865, 6867 and 6869
- Call Handling - Programmable keys support advanced features such as shared call appearance (SCA), busy lamp field (BLF) and Speed Dial
- Power - Powered by the phone; no separate power adapter required
Up to three M685 modules can be used with Mitel 6800 Series models 6865, 6867 and 6869. With each module offering a total of 84 keys (3 pages of 28 keys each) a combined total of 252 keys are available when three M685 modules are deployed enabling 6800 Series phones to become robust productivity-enhancing desktop communication tools.