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Asterisk 16 Application_SendFAX_res_fax - Asterisk Project ...

    https://wiki.asterisk.org/wiki/display/AST/Asterisk+16+Application_SendFAX_res_fax
    f - Allow audio fallback FAX transfer on T.38 capable channels. F - Force usage of audio mode on T.38 capable channels. s - Send progress Manager events (overrides statusevents setting in res_fax.conf). z - Initiate a T.38 reinvite on the channel if the remote end does not. See Also. Asterisk 16 Function_FAXOPT; Import Version. This documentation was imported from …

Problem with PJSIP and FAX - Asterisk SIP - Asterisk Community

    https://community.asterisk.org/t/problem-with-pjsip-and-fax/73143
    WARNING[3160][C-00000001]: res_fax.c:4670 acf_faxopt_write: channel 'PJSIP/ENDPOINT-00000001' set FAXOPT(filename) to '/tmp/fax.tif' is unhandled! WARNING[3160][C-00000001]: res_fax.c:2508 sendfax_t38_init: Audio FAX not allowed on channel 'PJSIP/ENDPOINT-00000001' and T.38 negotiation failed; aborting.

Application_SendFax - Asterisk Project - Asterisk Project Wiki

    https://wiki.asterisk.org/wiki/display/AST/Application_SendFAX
    f - Allow audio fallback FAX transfer on T.38 capable channels. s - Send progress Manager events (overrides statusevents setting in res_fax.conf). z - Initiate a T.38 reinvite on the channel if the remote end does not. See Also. Function_FAXOPT. Import Version. This documentation was imported from Asterisk version SVN-branch-1.8-r312509.

Asterisk 17 Application_SendFAX_res_fax - Asterisk Project ...

    https://wiki.asterisk.org/wiki/display/AST/Asterisk+17+Application_SendFAX_res_fax
    f - Allow audio fallback FAX transfer on T.38 capable channels. F - Force usage of audio mode on T.38 capable channels. s - Send progress Manager events (overrides statusevents setting in res_fax.conf). z - Initiate a T.38 reinvite on the channel if the remote end does not. See Also. Asterisk 17 Function_FAXOPT; Import Version. This documentation was imported from …

Asterisk 11 Application_SendFAX_res_fax - Asterisk Project ...

    https://wiki.asterisk.org/wiki/display/AST/Asterisk+11+Application_SendFAX_res_fax
    f - Allow audio fallback FAX transfer on T.38 capable channels. F - Force usage of audio mode on T.38 capable channels. s - Send progress Manager events (overrides statusevents setting in res_fax.conf). z - Initiate a T.38 reinvite on the channel if the remote end does not. See Also. Asterisk 11 Function_FAXOPT; Import Version. This documentation was imported from …

Asterisk PBX — T.38 fax between ATA's and Asterisk and ...

    https://www.spinics.net/lists/asterisk/msg130811.html
    asterisk[7092]: WARNING[3167]: res_fax.c:1529 in sendfax_t38_init: Audio FAX not allowed on channel 'SIP/out.to.pgw-000b3f49' and T.38 negotiation failed; aborting. asterisk[7092]: ERROR[3167]: res_fax.c:1650 in sendfax_exec: error initializing channel …

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