Features: - Up to 20 SIP accounts per system up to 20 lines per handset - DECT authentication and encryption technology to protect calls and accounts - 3-way audio conferencing for easy conference calls - Supports push-to-talkSupports push-to-talk - Automated provisioning options include TR-069 and XML configuration files - Use with Grandstream's UCM Series IP PBXs for zero-configured callsZero-config provisioning - HD audio to maximise audio quality and clarity Full-duplex speakerphone - Supports advanced telephony features, including call forwarding, call transferincluding call forwarding, call forwarding, call waiting, do not disturb, message waiting indication, multilingual prompts, flexible dialling plan and more Included: Base station, universal power supply, Ethernet cable, quick start guide, GPL declaration.