| ▲ | ssl-3 6 hours ago | |
I think you just described how the PSTN used to run, except this way has more layers. | ||
| ▲ | catlifeonmars 3 hours ago | parent [-] | |
Welcome to VoLTE :) | ||
| ▲ | ssl-3 6 hours ago | |
I think you just described how the PSTN used to run, except this way has more layers. | ||
| ▲ | catlifeonmars 3 hours ago | parent [-] | |
Welcome to VoLTE :) | ||