I have a question about fax transmission ability on Asterisk. We know that Asterisk supports T.38 gateway from version 10. we know spandsp project and res_spandsp too.
Beside these, We can send and receive faxes with Asterisk to/from PSTN and VoIP network?
I see many people offer HylaFax (+) /AvantFax for fax transmission, so Asterisk can’t do this work with us?
In addition, Fax for Asterisk that is a commercial solution, what does do ?
thanks for helps.