[asterisk-bugs] [JIRA] (ASTERISK-20773) fake DTMF or talkoff

[Marlon Costa (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-20773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=200517#comment-200517 ] 

Marlon Costa commented on ASTERISK-20773:
-----------------------------------------

Hi all,

We can hear this beep or DTMF sound, due this fact that we are collecting logs to investigate.

This beep happens in all calls (incoming or outgoing) by passing on TE410P. All other calls (SIP to SIP or through other SIP interconnection carriers, this does not happen).

This is a live Asterisk server and I'll change the configs said by Alec changing dtmf_hits_to_begin to 3 and 4 in our next off-peak period.

Please, leve this ticket opened until.

Thanks,
Marlon
                
> fake DTMF or talkoff
> --------------------
>
>                 Key: ASTERISK-20773
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20773
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Core/General
>         Environment: DAHDI Version: 2.6.1 Echo Canceller: HWEC, OSLEC
> Asterisk 1.8.18.0 i686 running Linux CentOS release 5.8
> pci:0000:02:06.0     wct4xxp+     d161:0410 Wildcard TE410P (3rd Gen)
>            Reporter: Marlon Costa
>            Assignee: Marlon Costa
>         Attachments: beep_log_filtered.cap, beep_log_filtered.log, chan_dahdi_additional.conf, chan_dahdi.conf, dahdi-channels.conf, init.conf, modules, system.conf, xpp.conf
>
>
> Hi,
> Many of our customers claims a beep when making or receiving calls.
> Our tech team enabled debug in our Asterisk and found that this beeps are DTMF tones.
> In asterisk logs it's possible see this things many times:
> {noformat}
> [Dec  5 12:40:13] DEBUG[5764] chan_dahdi.c: Begin DTMF digit: 0x41 'A' on DAHDI/i1/21499100-fab
> [Dec  5 12:40:13] DTMF[5764] channel.c: DTMF begin 'A' received on DAHDI/i1/21499100-fab
> [Dec  5 12:40:13] DTMF[5764] channel.c: DTMF begin passthrough 'A' on DAHDI/i1/21499100-fab
> [Dec  5 12:40:13] DEBUG[5764] chan_dahdi.c: End DTMF digit: 0x41 'A' on DAHDI/i1/21499100-fab
> [Dec  5 12:40:13] DTMF[5764] channel.c: DTMF end 'A' received on DAHDI/i1/21499100-fab, duration 51 ms
> [Dec  5 12:40:13] DTMF[5764] channel.c: DTMF end accepted with begin 'A' on DAHDI/i1/21499100-fab
> [Dec  5 12:40:13] DTMF[5764] channel.c: DTMF end 'A' detected to have actual duration 60 on the wire, emulation will be triggered on DAHDI/i1/21499100-fab
> [Dec  5 12:40:13] DTMF[5764] channel.c: DTMF end 'A' has duration 60 but want minimum 80, emulating on DAHDI/i1/21499100-fab
> [Dec  5 12:40:13] DTMF[5764] channel.c: DTMF end emulation of 'A' queued on DAHDI/i1/21499100-fab
> {noformat}
> We done a wireshark capture to find out what is happening and it's possible see an RTP EVENT during these beeps see file attached.
> Could you please, help us to solve this issue?
> Thanks,
> Marlon

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