Part of dialplan <extension name="early_media_dtmf"> <condition> <action application="pre_answer"/> <action application="play_and_get_digits" data="2 5 1 7000 # /usr/share/freeswitch/sounds/en/us/callie/conference/8000/conf-pin.wav '' foobar \d+"/> <action application="log" data="INFO captured digits ${foobar}"/> </condition> </extension> FS output 2016-01-31 00:20:24.399711 [DEBUG] switch_rtp.c:6865 RTP RECV DTMF 1:1600 2016-01-31 00:20:24.399711 [INFO] switch_channel.c:502 RECV DTMF 1:1600 2016-01-31 00:20:24.819718 [DEBUG] switch_rtp.c:6865 RTP RECV DTMF 2:1600 2016-01-31 00:20:24.819718 [INFO] switch_channel.c:502 RECV DTMF 2:1600 2016-01-31 00:20:25.159703 [DEBUG] switch_rtp.c:6865 RTP RECV DTMF 3:1600 2016-01-31 00:20:25.159703 [INFO] switch_channel.c:502 RECV DTMF 3:1600 2016-01-31 00:20:25.539688 [DEBUG] switch_rtp.c:6865 RTP RECV DTMF 4:1600 2016-01-31 00:20:25.539688 [INFO] switch_channel.c:502 RECV DTMF 4:1600 2016-01-31 00:20:25.819704 [DEBUG] switch_rtp.c:6865 RTP RECV DTMF 5:1600 2016-01-31 00:20:25.819704 [INFO] switch_channel.c:502 RECV DTMF 5:1600 EXECUTE sofia/internal/1001@91.103.196.13 log(INFO captured digits 12345) 2016-01-31 00:20:25.819704 [INFO] mod_dptools.c:1692 captured digits 12345 On Sun, Jan 31, 2016 at 12:06 AM, Bote Man <bote_radio@botecomm.com> wrote:

Some (many) carriers only allow one-way audio from the switch to the caller so that you don’t get free phone calls. Early media is the part of the call that is not billed. If they allow the caller to send audio to the switch during this free period it would open them up to fraud.

Bote

*From:* Dmitriy Borisov *Sent:* Saturday, 30 January, 2016 15:19 *Subject:* [Freeswitch-users] DTMF capture and early media

Hi, All!

https://tools.ietf.org/html/rfc3960 has next part: Early media refers to media (e.g., audio and video) that is exchanged

before a particular session is accepted by the called user. Within a

dialog, early media occurs from the moment the initial INVITE is sent

until the User Agent Server (UAS) generates a final response. It may

be unidirectional or bidirectional, and can be generated by the

caller, the callee, or both. Typical examples of early media generated by the callee are ringing tone and announcements (e.g.,

queuing status). Early media generated by the caller typically

consists of voice commands or dual tone multi-frequency (DTMF) tones

to drive interactive voice response (IVR) systems.

But I know that in FreeSWITCH in preanswer state I can`t capture DTMF. Why? This part of RFC is conflicting with some other standard? It can be very intresting feature.

--

С уважением,

Борисов Дмитрий

Отдел облачных технологий 1С-Рарус

Тел. +7 (495) 231-20-02 доб.: 15-94

--

with best regards,

Dmitriy Borisov

1C-Rarus Cloud Services

tel.: +7 (495) 231-20-02 add.: 15-94

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