ADSL2/2+ Wireless G++ 4-Port Router Wireless N Router & USB HomePlug 200Mbps with "Simple Connect" UM 3100 56K External USB Modem USB Interface Automatic detection between data/fax calls Enhanced ADPCM/PCM voice operation with concurrent DTMF detection CDC-compliant and supported by Microsoft CDC modem drivers Quick connect, Modem-on-Hold and 48Kbps PCM upstream supported for ITU-T V.92 Line quality monitoring and re-train MSP 2980 56K PCI Modem – V.92 ITU standard now! 32-bit PCI 2.2 Interface Quick Connect, Modem-on-Hold and 48Kbps PCM upstream supported for ITU-T V.92 Call Progress Monitoring feature thru soft audio (No buzzer on board) Quick Connect, Modem-on-Hold and 48Kbps PCM upstream supported for ITU-T V.92 1KV Surge Protection Soft ring detection x2 Tel Jack for Telephone and Wall