<div dir="ltr"><div>I don't think this exists in FS. You can create a small dialplan APP that installs a DTMF hook and drops all digits that aren't 0-9,#,* by returning SWITCH_STATUS_FALSE to drop and SWITCH_STATUS_SUCCESS to allow. mod_dptools.c and switch_ivr_async.c have examples of DTMF hooks.</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Aug 1, 2017 at 2:36 AM, Mickael Hubert <span dir="ltr"><<a href="mailto:m.hubert@hexanet.fr" target="_blank">m.hubert@hexanet.fr</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi list,<br>I'm looking for a way to filter ingress DTMF on A leg.<br>I receive "bad" DTMFs from SIP provider (Signal A,B,C, etc ...) I want to filter only these DTMF, not all others.<br>I receive only RFC2833 DTMF.<br><br>Ex:<br>Sip Provider -- (DTMF 1,A,2,C on A leg) --> FS --> (DTMF 1,2 on B leg) --><br><br>Do you have an idea for me please ?<br><br>Thanks in adavance<br><br><br>FS version: FreeSWITCH Version 1.3.13b+git~20130213T200819Z~<wbr>cd7d1efc2a (git cd7d1ef 2013-02-13 20:08:19Z)<span class="HOEnZb"><font color="#888888"><br clear="all"><div><br>-- <br><div class="m_325895663957418552gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">Mickaël HUBERT<br><div style="font-size:12.8px">Responsable du service VoIP<br></div><div style="font-size:12.8px">Tel: <a href="tel:+33%203%2026%2079%2030%2005" value="+33326793005" target="_blank">(+33) 03.26.79.30.05</a><br></div></div></div></div></div></div></div></div></div>
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