2 ms·
You could possibly use tethering to your mobile phone in some way, although I'm unsure, I'm just throwing an idea out there.
by SuperNinKenDo 3y ago
You could possibly use tethering to your mobile phone in some way, although I'm unsure, I'm just throwing an idea out there.
- tjohns 3y agoCellular compression will not play nicely with analog modems. (Or any lossy compression, really - this is why you have to use lossless G.711 to have any hope of this working on VoIP.) Back in the days of 2G cellular, GSM had an option to have your cell phone digitally connect to an analog modem in the cell tower, and have the tower place an analog modem call on your behalf. (Very similar to how T.38 works for faxes in the VoIP world.) You'd then connect your cell phone to your laptop over RS-232, IrDA, or Bluetooth. It was called CSD ("circuit-switched data), and used 1x voice channel for 9600 bps, or 4x voice channels for 56 kbps. Needless to say your cell carrier charged quite a bit for using this capability. I don't know if there's any cell carriers left that still offer CSD calls.
- Nextgrid 3y agoI doubt any modern smartphone supports CSD even if you had a carrier that supported it. You'd need either an old feature-phone or 3G dongle (something that exposes a serial port).