I know about SDR, they are used in OpenBTS, an open source system used with Asterisk PBX systems. in 2013 Burning man, someone setup a cell phone tower for people to use SMS messaging, but with no SS7 access, all they can do is send messages.
I know about SDR, they are used in OpenBTS, an open source system used with Asterisk PBX systems. in 2013 Burning man, someone setup a cell phone tower for people to use SMS messaging, but with no SS7 access, all they can do is send messages.
RE: Switching System 7 (SS7) Security flaws