The Aastra M535 display's Backlight setting is taken from the phone. • Aastra M535 has 3 levels with 15 configurable keys each. Press the Foxkey on the place ...
Aastra 5380 Manual Online: Aastra M530/Aastra M535 Expansion Key Module (Optional). You can connect up to 3 Aastra M530 expansion key modules with 20 ...
Key features. Extension module with screen. 15 supplementary function keys and 3 levels for each key. Compatible with Aastra 5370 / 70ip and 5380 / 80ip.