Base station IP Grandstream DP750 Up to 10 SIP accounts per system; up to 10 lines per handset; up to 5 concurrent calls per DECT system Supports a range of up to 300 meters outdoors and 50 meters indoors 3-way voice conferencing, full HD audio, integrated PoE Automated provisioning options include TR-069 and XML config files TLS and SRTP security encryption technology to protect calls and accounts Use with Grandstream’s UCM series of IP PBXs for Zero Config provisioning Offers multiple ring group options, including Circular, Linear, Parallel and Shared modes