The new jabra engage headsets look really nice. Anyone using them with Grandstream phones?
Jabra is not listed by GS on the compatibility list. However, Jabra indicates that the Engage is indeed compatible with the 21XX. I do not have an Engage, but an earlier model that I use with a softphone and it has been flawless. I have had it for 4 years.
The only thing I can say is that unless others chime in with first-hand experience, you should make certain that you call Jabra or a reseller and insure that they will stand behind the claim (offer full refund to include shipping) as well as what cables and EHS accessories are needed. You also need to ask them about what does compatibility really mean - answer, end call, etc.