- 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