Enables feature-rich telephone service over your cable or DSL Internet connection Two standard telephone jacks for your phones or fax machines, with independent phone numbers High quality, clear sounding voice service simultaneous with internet use Compatible with all common telephone features:Caller ID, Call Waiting, Voicemail, etc You'll get clear reception and a reliable fax connection, even while using the Internet at the same time.You can even add a toll-free number. Two voice ports (RJ-11) for analog phones or fax machines Impedance agnostics - 8 Configurable settings call waiting, cancel call waiting, call waiting caller ID Caller ID with name or number (multi-national variants) Caller ID blocking Call forwarding: No answer, busy, all do not disturb Message waiting indication - Visual and tone based Call return:Call back on busy Call blocking with toll restriction Delayed disconnect Distinctive ringing - Calling and called number Off-hook warning tone Selective or anonymous call rejection Hot line and warm line calling Speed dialing of 8 numbers or addresses Music on hold Voltage: AC100-240V Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on. Color: As shown Material: plastic Package Contents: 2 x Gateway Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.