What I was looking for - if it were not for the sound problems

I had long been looking for a good Android deskphone among others Auerswald and Yealink was time for discussion, but unfortunately too old (Android 2.x) or propritär (Yealink T48g). Now I thought that Grandstream finally would be the product of choice. Unfortunately, there is currently only a "three star". But first to the advantages:
- Sufficiently large display (1024x600)
- Android 4.2.2, and in the 3 weeks, during which I've been using it, there are already 3 new FW Updates + beta
- Open (!) - With integrated Grandstream Market, which lets the Play Store reload.
- Fix, yet I found no hangers. This is for Android unfortunately not always so.
- Native Android mail app for the integration of Exchange accounts

Improvable (not negative but disturbing)
- Sounds are not finely adjustable and the sound palette is used to (email etc)

Negative (the most serious impressions)
- Wireless LAN and can not be simultaneously operate (Google Location Services)

Last but not least:
- The microphone is clearly too low (or I already had 2 Monday appliances).

Overall, the phone of the SW and the design is exactly what I was looking for. Unfortunately, so far helped no replacement of the complete unit in respect of the elimination of to "distant" call volume for the interlocutor. Especially in the business environment not portable. I hope, however, nor that the manufacturer can solve the problem with an update, as the market for such phones is not widespread at present.

I will report a new, once the manufacturer / marketer can new heard from. Until then, I can recommend the unit only as a stand tablet. Unfortunately, not for the actual function as a 2.0 phone.

Now (7:02) are a few more months have passed, recorded tens FW updates, always hoped. (Exchanged 3x) Unfortunately up towards the end only a Monday product. Therefore, unfortunately (!) And I must stress, not recommended.