... cards) 5, call back Description of Product:1,What is FWT and function?1.1, The full name ... ports.Ittakesastandardmobilephonesimcardandmakeacall. 1.2, It is often used when a landline connection is not available where voice, fax ... or internet are required. It is connection of landline type devices such as telephones, ... call 2.3, SKYLINE 8 Ports GSM FWT is RJ-11 of FXS/FXO port connection of ...