[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=215742#comment-215742 ] 

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

Yup somehow we skipped the important part before. It was definitely useful to have the time the issue occurs pointed out specifically. 

We hear where the users react to the issue. We don't see a clear CNG tone, but further analysis on the audio will be necessary to know what is going on for sure.

I'm going to open the issue up so it'll be in the queue, but one thing that may really help is getting another full log with the additional debug, message types and verbosity levels that I mentioned.

For future reference I've attached the file rtp_ssrc_4D7.raw.tar.gz. That is the inbound audio where we would expect to see a CNG tone. The time in that file corresponding to issue shown in the log is at approximately 12:36 or twelve minutes and thirty six seconds into the file.


                
> 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, Resources/res_fax_spandsp
>    Affects Versions: 1.8.22.0
>         Environment: CentOS release 5.6 32 bit.
>            Reporter: David Cunningham
>            Assignee: Rusty Newton
>            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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