<div dir="ltr">Hi, All!<br><br><pre style="margin-top:0px;margin-bottom:0px"><font color="#000000"><span style="font-size:13.3333px"><a href="https://tools.ietf.org/html/rfc3960" target="_blank">https://tools.ietf.org/html/rfc3960</a> has next part:<br></span></font>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 <span style="background-color:rgb(255,255,0)">bidirectional</span>, and can be generated by the
caller, the callee, or both. <span style="font-size:13.3333px;font-family:arial,sans-serif">Typical examples of early media</span> generated by <br> the callee are ringing tone and announcements (e.g.,
queuing status). Early media generated by the caller typically
consists of voice commands or <span style="background-color:rgb(255,255,0)">dual tone multi-frequency (DTMF) tones
to drive interactive voice response (IVR) systems.<br><span style="background-color:rgb(255,255,255)"><br></span></span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="background-color:rgb(255,255,255)">But I know that in FreeSWITCH in preanswer state I can`t capture DTMF. Why? <br>This part of RFC is conflicting with some other standard? It can be very intresting feature.</span><br></pre><br clear="all"><div><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>--</div><div>С уважением,</div><div>Борисов Дмитрий</div><div>Отдел облачных технологий 1С-Рарус</div><div>Тел. +7 (495) 231-20-02 доб.: 15-94</div><div>--</div><div>with best regards,</div><div>Dmitriy Borisov</div><div>1C-Rarus Cloud Services</div><div>tel.: <span style="font-size:12.8px">+7 (495) 231-20-02 add.: 15-94</span></div></div></div></div></div></div></div></div></div></div>
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