... Railcom 3.It has three RJ11 jackets for line,modem,phone Adsl splitter/filter can eliminate the interference between data ... line. Two RJ11 at the other end for phone and modem. BrandYIXIModel SP-311Input interfaceRJ11Output interfaceRJ11Bandwidth2.2(MHz)Transmission ... exported to international market including over Twenty overseas countries such as Turkey, French,UK,Ukrain, India, Iran, Russia, USA, ...