sms gateway... first you need a cellphone + sim (subscriber identification module). When you text a message, the mobile unit will automatically transmitt a series of codes to a nearest BTN station (cell site). moreover to the BSC then to the Mobile Switching Center then the last one to the Public Telephone Network...
sms gateway... first you need a cellphone + sim (subscriber identification module). When you text a message, the mobile unit will automatically transmitt a series of codes to a nearest BTN station (cell site). moreover to the BSC then to the Mobile Switching Center then the last one to the Public Telephone Network...