- Full-duplex speakerphone in base- Wireless freedom- Support for up to three SIP lines/accounts, you can manage multiple calls with advanced call handling features- Pair up to three C52-SP DECT Expansion speakerphones to increase the volume and microphone pickup for 21 or more active participants- User-friendly interface, large backlit display, three soft keys and navigational pad- G.722 wideband codec support for HD audio, calls have never sounded so rich and life-like- DECT 6.0 wireless microphones- Up to 24 hours of wireless talk time- Up to 12 hours of talk time per wireless microphone- Up to 70 hours of standby time per wireless microphone- Magnetic charging bays in the base keep the microphones together and ready for the next call- Automatic gain control- Digital mixing, Volume Control: 10 levels- 3-way local conference- N-way network conference- Local phonebook up to 200 entries- Call history up to 200 entries

SIP Wireless Conference Phone