Superior wideband acoustics with the first two-element speaker in a conference phone; this feature allows the phone to capture the full voice spectrum without having to compromise with a single-element speaker
Expanded room coverage with support for daisy chaining two units
Support for dect wireless extension microphones
Session initiation protocol (sip) signaling
Device authentication and signaling encryption using transport layer security (tls) with advanced encryption standard 128 (aes-128)
Media encryption using secure real-time transport protocol (srtp) with aes-128