Hi, Here's my setup: - Elastix 2.0 - Fax Printer - configured as SIP extension via ATA - Dedicated DID for receiving FAX I have tested outgoing fax using the fax printer, and it's working fine. Now, I'm having problem with incoming fax. When I call the DID for fax, i hear the fax tone. And as I observe in the CLI it is actually receiving the fax. I see the ReceiveFax function temporarily saving the fax in /var/spool/asterisk/fax. But after this it goes Auto fallthrough, channel 'DAHDI/X-X' status is UNKNOWN and then it fails to print the fax in the fax printer. However, I can receive the fax in the designated email address. Any idea on how to fix this? Thank you in advance!