As I and Dr.Lync has tested the SNOM m9R on Lync server 2013, there has been som trouble With this.
One issue has been it seems like it sleeps when not used, and the user has to unplug the DECT station and reboot both the handset and base.
I have last week got an email from SNOM in Germany telling me this important information:
1. SNOM m9R is a Product that they will stop makeing.
2. SNOM m9R is not supported on Lync 2013. It was only able to work on Lync 2010 and OCS2007R2.
hmmm after knowing that, I will now not recommend this to be used together With Lync 2013 or Skype for Business server 2015.