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While we're on the topic, could someone explain the following? 1. Is there any free way to send an SMS "from" a different phone number that you verifiably own,
by wfunction 10y ago
While we're on the topic, could someone explain the following?
1. Is there any free way to send an SMS "from" a different phone number that you verifiably own, without actually sending it from that number? (e.g. if your service provider charges you for messages sent through them, but the phone number is yours)
2. Beyond that... how do VoIP services go about sending & receiving SMSs themselves? Why can't I do the same thing and bypass them?
- jstanley 10y agoMy admittedly very limited understanding is that it works basically the same as the Internet. Anybody who wants to be a serious player needs to have sufficient peering agreements that they can route traffic to every other player. So yes you could do it yourself, the same as you could setup your own ISP. It's just easier and cheaper not to.
- wfunction 10y agoDo traditional lines work the same way basically too, in this respect? Or is there a fundamental difference between traditional lines and VoIP lines in this aspect?
- jstanley 10y agoI would assume so, although traditional lines were a lot more nationalised. So it would be the same thing, but (international) agreements between national carries rather than private companies.
- csomar 10y agoProbably they have expensive contracts with carriers?
- MichaelGG 10y agoIt's an honour based system. There are companies that'll activate SMS on any number. They verify your access to a number, then they have a contract that lets them assert they are allowed to do SMS for you. The owner of the number (the carrier) has to agree to this system so it's not available for every possible number.