Grandstream phones are compatible with Plantronics headsets.

We had a customer inquiry about the compatibility of Plantronics headsets with Grandstream telephones: Question: We were told that we need cable #38099-01 to connect our Plantronics H-series headsets to the new Grandstream GXP2124 phones we just had installed. With our old phones we were using Polaris cables. Why can’t we use them? Answer: To begin with, … Continued