[Freeswitch-users] DTMF Issue - Unexpected digits are receiving

[Chandramouli P]

Hello all,

Any update would be appreciated. Thank you.

Best Regards,
Chandramouli.

On Wed, Oct 24, 2018 at 11:22 AM Chandramouli P <mouli123 at gmail.com> wrote:

> Hello Branden,
>
> Thank you for your reply. As you said, I do understand about A-D DTMF
> digits. But, my problem is to regenerate the issue i.e. ("A"). Which key
> (s), I have to press to send "A" as DTMF digit? I am sure that the end user
> is used regular mobile phone dialer only, and not softphone.
>
> Thank you.
>
> Best Regards,
> Chandramouli.
>
> On Wed, Oct 24, 2018 at 2:58 AM Branden Jordan <BJordan at e-teleco.com>
> wrote:
>
>> 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?
>>
>>
>>
>> *From:* FreeSWITCH-users <freeswitch-users-bounces at lists.freeswitch.org> *On
>> Behalf Of *Chandramouli P
>> *Sent:* Monday, October 22, 2018 11:23 PM
>> *To:* FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
>> *Subject:* Re: [Freeswitch-users] DTMF Issue - Unexpected digits are
>> receiving
>>
>>
>>
>> Hello Abdullah,
>>
>>
>>
>> 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.
>>
>>
>>
>> Thank you.
>>
>>
>>
>> Best regards,
>>
>> Chandramouli.
>>
>> On Mon, Oct 22, 2018 at 8:00 PM Vallimamod Abdullah <vma at vallimamod.org>
>> wrote:
>>
>> Hi,
>>
>>
>>
>> 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.
>>
>>
>>
>> Maybe your case is similar?
>>
>>
>>
>>
>>
>> Best Regards,
>> --
>> Vallimamod Abdullah
>> SIP Solutions
>> vma at sip.solutions
>> linkedin.com/in/vallimamod
>> .
>>
>>
>>
>> On 22 Oct 2018, at 08:24, Chandramouli P <mouli123 at gmail.com> wrote:
>>
>>
>>
>> Hello David,
>>
>>
>>
>> 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?
>>
>>
>>
>> Thank you.
>>
>>
>>
>> Best regards,
>>
>> Chandramouli.
>>
>> On Sun, Oct 21, 2018 at 10:53 PM David Villasmil <
>> david.villasmil.work at gmail.com> wrote:
>>
>> From what i know, "A" is a multifrequency tone, 697hz+1633hz. Maybe the
>> client is actually sending that.
>>
>>
>>
>> On Sat, Oct 20, 2018, 17:54 Chandramouli P <mouli123 at gmail.com> wrote:
>>
>> Hello,
>>
>>
>>
>> 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?
>>
>>
>>
>> Thank you.
>>
>>
>>
>> Best Regards,
>>
>> Chandramouli.
>>
>>
>>
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>> https://freeswitch.com
>>
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>>
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