[asterisk-bugs] [JIRA] (ASTERISK-23160) Faulty fax detection

[Rusty Newton (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-23160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=215684#comment-215684 ] 

Rusty Newton commented on ASTERISK-23160:
-----------------------------------------

Scott Griepentrog assisted me in looking at the audio you provided. We didn't see a fax CNG tone anywhere in the audio. Also, the parties involved finish the conversation without interruption, and then we see SIP BYEs and 200OKs.  Basically it doesn't look like that was the right call that got interrupted by fax detection and then redirected.

Due to the scrubbing in the log I wasn't able to match up the call exactly with the log. Are you sure you have the right pcap?

If it isn't, can you provide 

 * another example pcap - make sure to check the pcap and see if the call gets redirected or interrupted
 * a log with notice,warning,error,debug,verbose,dtmf,fax type messages enabled
 * be sure that the VERBOSE and DEBUG level are both turned up to 5 as I didn't see any DEBUG messages in your log despite you having that type message enabled. (you might just set it in asterisk.conf before starting Asterisk to make sure it gets turned up)
 * "fax set debug on" before reloading the logger
 
Let me know if we are confused about anything.

                
> Faulty fax detection
> --------------------
>
>                 Key: ASTERISK-23160
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-23160
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Applications/app_fax
>    Affects Versions: 1.8.22.0
>         Environment: CentOS release 5.6 32 bit.
>            Reporter: David Cunningham
>            Assignee: Matt Jordan
>            Severity: Minor
>         Attachments: 000065d0_ticket_2312.txt
>
>
> We have an Asterisk system with "faxdetect = yes" in sip.conf and sometimes a call is suddenly redirected to the 'fax' extension even though there's no fax tone in the audio. Eg:
> [Jan 13 12:47:52] VERBOSE[12712] chan_sip.c:   == Redirecting 'SIP/product-local-000065d0' to fax extension due to CNG detection
> We can provide a PCAP with audio and an Asterisk full log if required. Thanks.

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