The M5 Snom DECT repeater can be registered with any of the M-series base stations (M300, M700 and M900) using the base's web interface and following the procedure descibed at "How to register an M5 repeater to a base station", with an eye onto "Adding M5 repeaters in a multicell environment" if working with a multicell system.
Sometimes you may need to reset the repeater, and since it has no reset button, you need to follow the steps below:
Plug it out again
| This way, when you plug it in after the whole procedure, the M5 has been reset to factory defaults and it can be re-connected to a new base station using the standard procedure. |