Le 30/12/2013 19:03, *Ali Pey* wrote:
200 OK is a proper respond in this scenario as FS did receive the Update for an existing SIP session. Codec negotiation is a different story and is negotiated through SDP (Offer/Answer).
If FS responds with a 4XX response code, the call would very likely be dropped which probably be a less desired outcome.
Here you can see what happens when I send successfully a fax with Ekiga as an ATA, directly from my pc: http://cjoint.com/?0LFqxM5ew40 Yes, two loaded pages (and many more in other times) with 0 error at 14400 bit/s, this is possible with some softphones. :-) Here you can see what happens when I attempt to send a fax through FreeSwitch: http://cjoint.com/?0LFqzE3zgXj (In the two cases, the same account and the same sip provider are used.) And the errors displayed in red letters in FreeSwitch console: http://cjoint.com/?0LFqADKuAaY I am not pretending FreeSwitch doesn't work correctly, I whas only wishing to know if some setting exists to make possible sending classical faxes via my sip provider...