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My understanding is that, in general, it's not possible to send a fax via cell phone audio because the digital compression applied does not pass enough informat
by alasarmas 7y ago
My understanding is that, in general, it's not possible to send a fax via cell phone audio because the digital compression applied does not pass enough information to sustain a fax modem connection. It may be possible with a higher-bandwidth thing like voice-over-LTE, though? (of course I'd love to be wrong and learn that this is easy :-)
- seba_dos1 7y agoCSD data calls are perfectly possible in GSM - your carrier can disallow them though. However, you usually feed and receive data to/from the modem in a different way than via its audio interface ;) Other than that, you're right. It's possible to come up with a way to pass data through GSM codec, but it definitely won't be a regular FAX connection then.