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Description Product Name: Cisco Linksys **2T Voice SIP Phone Adapter 2FXS UNLOCKED Item Code: 88944143 Category: VOIP, Internet Telephony Add to My Favorite Catalog Short Description: 1.Brand new 2.Color Packag 3.All unlocked. Quantity: 1 Piece Package Size: 28.0 * 16.0 * 6.0 ( cm ) Gross Weight/Package: 0.5 ( kg ) linksys **2T FUNCTIONS Two voice ports (RJ11) for analog phones or Fax machinery 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 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