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