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

Chandramouli P mouli123 at gmail.com
Thu Nov 1 05:54:44 UTC 2018


Hello all,

Any update would be appreciated. Thank you.

Best Regards,
Chandramouli.


On Mon, Oct 29, 2018 at 12:23 PM Chandramouli P <mouli123 at gmail.com> wrote:

> 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
>>>
>>> Official FreeSWITCH Sites
>>> https://freeswitch.com/oss
>>> https://freeswitch.org/confluence
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>>
>>
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