Notwithstanding that scan+email has largely replaced the fax machine technologically, there are still occasions when someone insists that it’s the only way they can send and/or receive a document from me. So, why can’t cell phones send and receive faxes?
There is apparently a hard-and-fast technological impediment I’m not aware of. There are cell phone apps that let you upload a document to a paid service, which will then call the receiving fax machine on your behalf. But that’s a sorry substitute for an app that has your phone itself dial the fax number and send it directly.
I have read that a fax machine needs a special chip that cell phones don’t have, modems don’t have any trouble, and can’t that functionality be implemented in software now?
The only possibility I can think of is something more fundamental: land lines communicate at seven bits per sample, whereas maybe cell phones use fewer bits? And there isn’t a fax protocol for anything less than seven bits?
Does anybody know the answer?