Grandstream DP755 Carrier Grade HD DECT Base Station, PTT, extended range, 20 concurrent calls The DP755 pairs with up to 10 of Grandstream’s 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 phone base station supports up to 10 handsets and 20 SIP accounts while also offering 3-way voice conferencing, full HD audio and integrated PoE. A shared SIP account on all handsets will add seamless unified features that gives users the ability to answer all calls regardless of location in real-time. The DP755 supports a variety of auto-provisioning methods and TLS/SRTP/HTTPS encryption security. When paired with Grandstream’s DP720, DP722 or DP730 handsets, the DP755 offers a powerful cord less DECT solution for any business or residential user. Notable features of the DP755 include: Up to 20 SIP accounts per system; up to 20 lines per handset DECT authentication and encryption technology to protect calls and accounts Pairs with up to 10 of Grandstream’s DP series DECT handsets (DP730, DP722, and DP720) Provides outdoor range up to 400 meters with the DP730 or 350 meters with DP722/DP720, and indoor range up to 50 meters 3-way audio conferencing for easy conference calls Supports Push-to-Talk (PTT) Automated provisioning options include TR-069 and XML config files HD Audio to maximize sound quality and clarity; full duplex speakerphone Use with Grandstream's UCM series of IP PBXs for Zero Config provisioning Supports advanced telephony features, including call transfer, call forward, call-waiting, do not disturb, message waiting indication, multi-language prompts, flexible dial plan and more