2 FXS port (HT702) or 4 FXS port (HT704), supporting 3 REN and single 10/100M Ethernet port Advanced telephony features including caller ID, call waiting, 3-way conference, transfer, forward, do not disturb, message waiting indication, multi-language voice prompt, T.38 Fax, flexible dial plan Strong security protection of voice/data privacy using TLS/SRTP/HTTPS, secure and automated provisioning using TR069 and HTTP/HTTPS/TFTP