Bluetooth
Version 4.2 Supported profiles: HFP(1.6), A2DP, AVRCP Supported codec: CVSD, SBC, mSBC Wireless output: Class2 Maximum communication distance: 10m (32.8 ft) (no obstacles) Radio frequency (operational frequency): 2,402 to 2,480 MHz Maximum output power (EIRP): 4.0 dBm (2.5 mW)
SIP
Dial, Answer, Hold, Resume, Forwarding, Do not disturb, Call ID, Voice Mail Notifications (switch configured) Call Bridging Supports Bridging SIP, USB, BT and AUX Calls. Join, Split, Hold, Resume, 5+1 Lines: Up to 2 SIP calls, 1 USB call, 1 Bluetooth Call, 1 AUX, plus the user Codecs G.711, G.722HD, G.729ab, G.726 DTMF Support RTP event, SIP in-band, SIP info package Security SRTP Support (RFC 1889), IETF SIP support (RFC 3261 and companion RFCs)