... , 2 USB (2.0) host ports, 2.5mm headset jack caller ID, call waiting, hold, transfer, for-ward, 1) SIP 2.0 ... , PIP, still picture capture/store.6)Traditional voice features including caller ID, call waiting, hold, transfer, for-ward, block, mute, autodial, off ... conferencing, headset enabled, intercom, AES encryption. 300 degree voip video phone with USB port