Grandstream DP755 Carrier Grade HD DECT Base Station, PTT, extended range, 20 concurrent callsGrandstream DP755 Carrier Grade HD DECT Base Station, PTT, extended range, 20 concurrent calls The DP755 pairs with up to 10 of Grandstreams DP series DECT handsets (DP730, DP722, and DP720) to offer extended mobility to business and residential users. It provides outdoor range up to 400 meters with the DP730, 350 meters with DP722 DP720, and indoor range up to 50 meters to give users the freedom to move around their office or home. This DECT VoIP