[asterisk-bugs] [JIRA] (ASTERISK-20748) Asterisk system didn't accept some dtmf digits when It called by a external PBX phone

[Rusty Newton (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-20748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=202979#comment-202979 ] 

Rusty Newton commented on ASTERISK-20748:
-----------------------------------------

{quote}
Do this issue occur due to reverse twist limit?
{quote}
If you only started seeing the erroneous 'A' digits after you changed the dtmf_reverse_twist value, then I presume that is what caused it or at least part of the cause.

{quote}
Else we can close it, or please tell me solution how we can resolve this issue?
{quote}
I'm going to go ahead and close this, as it doesn't look like a bug.

After you have tweaked the various DTMF settings, if things are working then I wouldn't worry about the occasional stray 'A' digit if it doesn't bother your configuration.

Tweaking your DTMF configuration to get it just right is a configuration & support issue. 

Despite JIRA not being a support forum, Michael and Alec have been extremely helpful in guiding you to the issue. You can continue to request help for your configuration issue on the Asterisk mailing list at http://lists.digium.com/mailman/listinfo/asterisk-users. If others still have assistance to provide, they can do so there.

If anyone feels that there are code improvements that can be done to make this configuration issue easier to solve, then feel free to re-open this and add a patch.

Thanks everyone!
                
> Asterisk system didn't accept some dtmf digits when It called by a external PBX phone
> -------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-20748
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20748
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Core/General
>    Affects Versions: 1.8.18.0, 10.10.0
>         Environment: CentOS Linux, Asterisk 1.8.18.0, libPri 1.4-current, DAHDI 2.6
> Card Details : Single span digital telephony card TE121. and using PRI E1 lines 
>            Reporter: Ankit Mittal
>            Assignee: Ankit Mittal
>         Attachments: debug.txt, dsp.conf, fsReceive1.wav, fsTransmit1.wav
>
>
> When some one call on our DAHDI(asterisk) system by their landline phone or the mobile phone the call goes perfectly and asterisk accept each of the dtmf digit pressed at other end.
> but when the same call is done by their PBX phone, the system ignore some digits like when we press 100136972 it shows 100192, and if we do it again it shows 1001392.
> I have tried 
> 1. relaxdtmf = yes /no
> 2. toneduration = 300
> but nothing help me.

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