Two voice ports (RJ11) for analog phones or Fax machines with two independent Telephone numbers One RJ-45 port for 10/100 Mbps Ethernet connection Supports Dynamic Host Configuration Protocol (DHCP) Supports Session Initiation Protocol (SIP) Supports multiple voice compression standards: G. 711, G. 726, G. 729, and G. 723.1 Web-based configuration through a built-in web server Supports DTMF tone detection and generation Supports FSK Caller ID, DTMF Caller ID and FSK VMWI Supports Echo Cancellation and Voice Activity Detection (VAD) Password protected access and configuration Supports auto-provisioning with remote firmware upgrade