... all-in-one gateways incorporating VoIP(available), Ethernet Switch, and Wireless home networking Access Point ,complied with the IEEE802.11b/g ... Product Specifications: Network StandardIEEE 802.11bIEEE 802.11gFrequency Range2.40G-2.4835Ghz ISM BandModulation802.11b DBPSK,DQPSK, CCK802.11g BPSK,QPSK ... , WINXP, WINME, WINNTEthernet Network Interface Card 802.11b/g /n Wireless VoIP Gateway ADSL2/2+ Modem