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<p class="MsoNormal">A is a valid DTMF digit so I wouldn’t worry about it too much and just handle A-D in your valid TT fields. I see around a million calls a day and see a few hundred A-D DTMF. It’s rare, but some really old phones still have the A-D DTMF
on them, and softphones have the ability to send them as well, maybe your user is using a softphone on their end?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>From:</b> FreeSWITCH-users <freeswitch-users-bounces@lists.freeswitch.org>
<b>On Behalf Of </b>Chandramouli P<br>
<b>Sent:</b> Monday, October 22, 2018 11:23 PM<br>
<b>To:</b> FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org><br>
<b>Subject:</b> Re: [Freeswitch-users] DTMF Issue - Unexpected digits are receiving<o:p></o:p></p>
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<p class="MsoNormal">Hello Abdullah,<o:p></o:p></p>
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<p class="MsoNormal">Thank you for your reply. By following your hint, I tried to regenerate the issue. I tried by getting voice mail beep, other beeps like receiving SMS, WhatsApp messages etc. But, unable to simulate. <o:p></o:p></p>
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<p class="MsoNormal">Thank you.<o:p></o:p></p>
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<p class="MsoNormal">Best regards,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Chandramouli.<o:p></o:p></p>
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<p class="MsoNormal">On Mon, Oct 22, 2018 at 8:00 PM Vallimamod Abdullah <<a href="mailto:vma@vallimamod.org">vma@vallimamod.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
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<p class="MsoNormal">I encountered the same issue in the past and have noticed that it was the mobile voicemail beep tone that was sometimes converted to 'A' dtmf on the isdn gateway.<o:p></o:p></p>
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<p class="MsoNormal">Maybe your case is similar?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:9.0pt;font-family:"Monaco",serif;color:black">Best Regards,<br>
-- <br>
Vallimamod Abdullah<br>
SIP Solutions<br>
<a href="mailto:vma@sip.solutions" target="_blank">vma@sip.solutions</a><br>
<a href="http://linkedin.com/in/vallimamod" target="_blank">linkedin.com/in/vallimamod</a><br>
.<o:p></o:p></span></p>
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<p class="MsoNormal">On 22 Oct 2018, at 08:24, Chandramouli P <<a href="mailto:mouli123@gmail.com" target="_blank">mouli123@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hello David,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks for your reply and I understand. But, As I explained, we tried to regenerate the issue by pressing different keys on dial pad. But, FreeSwitch is receiving the digits as usual every time. So, which key was pressed by the user on
dial pad to send "A"? Any assumptions?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thank you.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Best regards,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Chandramouli.<o:p></o:p></p>
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<p class="MsoNormal">On Sun, Oct 21, 2018 at 10:53 PM David Villasmil <<a href="mailto:david.villasmil.work@gmail.com" target="_blank">david.villasmil.work@gmail.com</a>> wrote:<o:p></o:p></p>
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<p>From what i know, "A" is a multifrequency tone, 697hz+1633hz. Maybe the client is actually sending that.<o:p></o:p></p>
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<p class="MsoNormal">On Sat, Oct 20, 2018, 17:54 Chandramouli P <<a href="mailto:mouli123@gmail.com" target="_blank">mouli123@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hello,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">We developed an application (FreeSwitch) that receives pressed digit by the end user on mobile phone dialer through DTMF and some action will be performed. Everything is working fine till now. But, we noticed one issue recently. From the
FreeSwitch log, we came to know that FreeSwitch is received the letter i.e. "A" from DTMF, instead of digit. We tried to regenerate this issue. But, when we are trying to regenerate, FreeSwitch is receiving the digit from DTMF as usual. I would like to know
How FreeSwitch is received the letter i.e. "A", instead of digit. Which key was pressed by the end user on mobile phone dialer?<o:p></o:p></p>
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<p class="MsoNormal">Thank you.<o:p></o:p></p>
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<p class="MsoNormal">Best Regards,<o:p></o:p></p>
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<p class="MsoNormal">Chandramouli.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">_________________________________________________________________________<br>
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