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If land-lines work, dial-up is your best bet. If you can't find a provider and need to look for ones outside the country, you may have trouble reaching them (ex
by throwaway984393 5y ago
If land-lines work, dial-up is your best bet. If you can't find a provider and need to look for ones outside the country, you may have trouble reaching them (ex. if they don't provide service to other countries). In that case you can look for "ring-back" services.
The way it works is, you call a number and give them a number you want to dial, and hang up. They dial that number, and then dial yours on a second line, and bridge the two. This gets around high fees on outbound calls from, say, a tiny nation with a telecom monopoly. We used them back in the day in small island countries to cut the phone bill in half. Might also be useful for connecting to dial-up services that are restricted.
If you can't find one of those services, you can pay someone in another country to install a phreak box on two landlines that will do this for you. You build the box and hook it up to two phone lines. When someone calls the first number, the line immediately picks up and feeds a second phone line into the first (giving you a dial tone). You can either make it two-way or one-way. I can't remember the design (I built it 20 years ago) and I'm shit at electronics, but it was really simple, so hopefully another old head can reply with a schematic (I think I used photodiodes/photoresistors for some of it?).
And now that I think of it.... If you can't find an international dialup provider, you could just pay someone to run a dialup server for you. Just a computer with a modem and one phone line, and a broadband connection. Set up a DUN server on the computer (old Windows machines could do this) and NAT connections out on the broadband line. Your own private dial-up provider.
- oriettaxx 5y agoah, ring-back, of course! thank you so much! this one no doubt can at least save on phone calls: I can set it up with twilio, or even the cheapest Dellmont reseller: ok, great... then yes, I could have a friend with a 'very old style' BBS kind of setup, but best would be an already made service Oh, wait I sec, I've got a possible solution here: the UK service ZEN cited by thinkingemote https://support.zen.co.uk/kb/Knowledgebase/DialUp-FAQs https://support.zen.co.uk/kb/Knowledgebase/DialUp-FAQs plus a callback triggered by a text message: form Ethiopia I send a message to a SMS in twilio, this will trigger an API that with a Twilio (or cheaper Dellmont) provider which will call ZEN in the UK and me in Ethiopia: then I need to answer with a modem (I need the proper hardware modem I guess..... uh. it's really a shame I cannot use my mobile phone!!)
- throwaway984393 5y agoIt's technically possible to use a mobile voice channel for dial-up, but very difficult. The GSM voice channel bandwidth is 2400 baud, and it's a lossy-compression codec. In the best case you'd get around 1kbps. But you could try it... disassemble an old Nokia, hook the mic and speaker up to a circuit that regulates the voltage and resistance to that of a phone line off the hook, and hook that up to an old analog modem (or use some software to make your computer's sound card act like an analog modem and skip the line regulator). I'm sure someone has tried this but I can't find it from googling.