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T.38によるFax送受信失敗「refused to negotiate T.38 …
https://groups.google.com/g/asterisk-ug/c/ByHhfpomeh4
「Audio FAX not allowed」 ... res_fax.c:1976 receivefax_t38_init: channel 'PJSIP/Trunk_Hikari-0000000e' refused to negotiate T.38 WARNING[19015][C-0000000e]: res_fax.c:2000 receivefax_t38_init: Audio FAX not allowed on channel 'PJSIP/Trunk_Hikari-0000000e' and T.38 negotiation failed; aborting. ERROR[19015][C-0000000e]: res_fax.c:2255 ...
ReceiveFAX problem - Asterisk Support - Asterisk Community
https://community.asterisk.org/t/receivefax-problem/33505
[Dec 9 11:11:49] WARNING[14301]: res_fax.c:1389 receivefax_t38_init: Audio FAX not allowed on channel ‘SIP/194.6.238.81-00000002’ and T.38 negotiation failed; aborting. [Dec 9 11:11:49] ERROR[14301]: res_fax.c:1560 receivefax_exec: error initializing channel ‘SIP/xxxxxxxxx-00000002’ in T.38 mode
Fax Receive not working - General Help - FreePBX Community ...
https://community.freepbx.org/t/fax-receive-not-working/35687
[2016-06-29 13:07:48] WARNING[49427][C-000005ca] res_fax.c: Audio FAX not allowed on channel ‘SIP/g100-00000132’ and T.38 negotiation failed; aborting. [2016-06-29 13:07:48] ERROR[49427][C-000005ca] res_fax.c: error initializing channel ‘SIP/g100-00000132’ in …
Asterisk PBX — T.38 fax between ATA's and Asterisk and ...
https://www.spinics.net/lists/asterisk/msg130811.html
asterisk[7092]: WARNING[3272]: res_fax.c:1529 in sendfax_t38_init: Audio FAX not allowed on channel 'SIP/out.to.pgw-000b3f8b' and T.38 negotiation failed; aborting. asterisk[7092]: ERROR[3272]: res_fax.c:1650 in sendfax_exec: error initializing channel …
Asterisk 16 Configuration_res_pjsip - Asterisk Project ...
https://wiki.asterisk.org/wiki/display/AST/Asterisk+16+Configuration_res_pjsip
When the number of in-use channels for the endpoint matches the devicestate_busy_at setting the PJSIP channel driver will return busy as the device state instead of in use. t38_udptl If set to yes T.38 UDPTL support will be enabled, and T.38 negotiation requests will be accepted and relayed.
What do the fax error messages mean? | SC
https://www.simplycast.com/interactive-marketing-support/faqs/what-do-fax-error-messages-mean/
The fax service attempted to send the same message multiple times unsuccessfully. This may be due to a call clarity issue. Far end cannot receive at the resolution of the image: The remote fax machine does not support receiving faxes sent at the resolution that our service sends at. Received a DCN from remote after sending a page
When You Cannot Send or Receive Fax Messages As Wanted
http://support.ricoh.com/bb_v1oi/pub_e/oi_view/0001036/0001036377/view/trouble/unv/0027.htm
If the e-mail size specified on the machine is too large, the Internet Fax document cannot be sent. In [Facsimile Features], under [Send Settings], set [Max. E-mail Size] to [Off], or set the maximum e-mail size to larger value. Then, re-send the document. When using On Hook Dial or Manual Dial, "Receiving" appears and transmission is not allowed.
asterisk/pjsip.conf.sample at master - GitHub
https://github.com/asterisk/asterisk/blob/master/configs/samples/pjsip.conf.sample
In res_pjsip_sdp_rtp, the bind_rtp_to_media_address option and the fallback use of the transport's bind address solve problems sending media on systems that cannot send ipv4 packets on ipv6 sockets, and certain other situations.
List of Error Codes without Messages
https://oip.manual.canon/USRMA-0312-zz-CS-enGB/contents/1T0002910536.html
Change the Maximum Data Size for Sending setting in [E-Mail/I-Fax Settings] in [Send] in [Function Settings] (Settings/Registration). Select a lower resolution, or if you are using I-Fax, decrease the number of pages containing images that you are sending each time, so that you do not exceed the Maximum Data Size for Sending limit.
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