USB VoIP Phone Supports Skype Network Telephone, USB1.1 with LCD Screen. Features: * PC-to-PC and PC-to-phone operation; * Driver built-in, plug and play; * USB1.1 compatible; * No need sound card; * No external power required; * Complies with H.323, MGCP, SIP protocol; * Echo cancellation, noise reduction; * Application support: Skype, and support Skype speed-dialing function; * Full duplex communication; * Key-in tone function; * LCD display, and call records are readable; * Skype titles such as Contacts could be operated on the USB phone, dialing from the keypad is visible