<div dir="ltr"><div dir="ltr"><a href="http://dataandsignal.com/frequency-detection/#dtmf_remover">http://dataandsignal.com/frequency-detection/#dtmf_remover</a><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><font style="background-color:rgb(255,255,255)" size="4" face="arial, helvetica, sans-serif"><img src="https://drive.google.com/a/dataandsignal.com/uc?id=1lUdzdLjEycxXcGhDz-bKqDX8-AIlZuCq&export=download" width="96" height="49"><br></font></div><div><font style="background-color:rgb(255,255,255)" size="4" face="arial, helvetica, sans-serif"><br></font></div><div><font style="background-color:rgb(255,255,255)" size="4" face="arial, helvetica, sans-serif">Piotr Gregor</font></div><div><span style="background-color:rgb(255,255,255)"><font size="2" face="arial, helvetica, sans-serif">Software Engineer</font></span></div><div><span style="font-family:arial,helvetica,sans-serif;font-size:x-small"><br></span></div><div><span style="font-family:arial,helvetica,sans-serif;font-size:x-small">M: (+44) 07483 866 525     </span><span style="font-family:arial,helvetica,sans-serif;font-size:x-small">L: (+44) 01256 597 470     </span><span style="font-family:arial,helvetica,sans-serif;font-size:x-small">www: </span><a href="http://dataandsignal.com" style="font-family:arial,helvetica,sans-serif;font-size:x-small" target="_blank">dataandsignal.com</a></div><div><br></div><div><br><br><br></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, May 24, 2020 at 2:26 PM Avi Marcus <<a href="mailto:avi@avimarcus.net">avi@avimarcus.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Do you hear a lot of dtmf, or just a tiny bleep? It can take a little bit of time to clamp down...<div><br></div><div>I use something a bit different, setting these three variables:</div><div><br></div><div><action application="set" data="rtp_manual_rtp_bugs=FLUSH_JB_ON_DTMF

"/><br></div><div><action application="set" data="jitterbuffer_msec=60"/><br></div><div><action application="set" data="sip_jitter_buffer_during_bridge=true"/><br></div><div><br></div><div>jitterbuffer of 60ms (3x ptime of 20 packets) means it can squelch it back to the beginning. This however means it could add a delay of 60ms.</div><div>And keep the jitter buffer even while we're bridging.</div><div><br></div><div><br clear="all"><div><div dir="ltr"><div dir="ltr"><div><div>-Avi Marcus</div><div>Bestfone<br></div></div></div></div></div></div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, May 19, 2020 at 12:33 AM SamyGo <<a href="mailto:govoiper@gmail.com" target="_blank">govoiper@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi all,<div>I've followed all the previous suggestions to detect the inband DTMF coming from a provider and to drop them from going further into B leg. However the inband DTMF still goes to otherside and user can hear clicking sounds. Here's what I've  done so far:</div><div><br></div><div><b>VERSION:</b><br><font face="monospace">FreeSWITCH Version 1.10.2-release+git~20191231T140119Z~f7bdd3845a~64bit (git f7bdd38 2019-12-31 14:01:19Z 64bit)</font><br></div><div><br><b><font face="arial, sans-serif">OS</font><font face="monospace">:</font></b><font face="monospace"> Ubuntu 18.04.4 LTS</font></div><div><br></div><div><b>DIALPLAN:</b></div><div><font face="monospace"><extension name="dtmf_filter"><br>            <condition field="${acl(${network_addr} lan)}" expression="true"/><br>            <condition field="destination_number" expression="(.*)"><br>                        <action application="set" data="rtp_manual_rtp_bugs=FLUSH_JB_ON_DTMF|ignore_dtmf_duration"/><br>                        <action application="set" data="jitterbuffer_msec=1p"/><br>                        <action application="set" data="spandsp_dtmf_rx_filter_dialtone=true"/><br>                        <action application="set" data="dtmf_verbose=true"/><br>                        <action application="set" data="drop_dtmf=true"/><br>                        <action application="spandsp_start_dtmf"/><br>                        <action application="bridge" data="{bridge_filter_dtmf=true,drop_dtmf=true}sofia/gateway/CISCO_GW/$1"/><br>            </condition><br>    </extension></font><br></div><div><font face="monospace"><br></font></div><div><font face="monospace"><br></font></div><div><font face="arial, sans-serif">I've also tried suggestion by other users on mailing list related to flush JB on DTMF rtp_bug but that doesnt help either.</font></div><div><font face="monospace"><br></font></div><div><b><font face="arial, sans-serif">CONSOLE OUTPUT:</font><br></b><font face="monospace">2020-05-12 23:59:10.195999 [DEBUG] mod_spandsp_fax.c:295 FLOW DTMF Potentially '5' - total -15.55dB, row -32.25dB, col -40.30dB, duration 338436 - miss<br>2020-05-12 23:59:10.195999 [DEBUG] mod_spandsp_fax.c:295 FLOW DTMF Potentially '5' - total -17.99dB, row -30.58dB, col -40.99dB, duration 338538 - miss</font><br></div><div><font face="arial, sans-serif"><br></font></div><div><font face="arial, sans-serif">It does detect the number but its not a hit. </font></div><div><font face="arial, sans-serif"><br></font></div><div><font face="arial, sans-serif">Can I get some more ideas how to drop inband DTMF tones, Thanks.</font></div><div><font face="arial, sans-serif"><br></font></div><div><font face="arial, sans-serif">Best Regards,</font></div><div><font face="arial, sans-serif">Sammy</font></div><div><font face="monospace"><br></font></div></div>
_________________________________________________________________________<br>
<br>
The FreeSWITCH project is sponsored by SignalWire <a href="https://signalwire.com" rel="noreferrer" target="_blank">https://signalwire.com</a><br>
Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.<br>
Build your next product on our scalable cloud platform.<br>
<br>
Join our online community to chat in real time <a href="https://signalwire.community" rel="noreferrer" target="_blank">https://signalwire.community</a><br>
<br>
Professional FreeSWITCH Services<br>
<a href="mailto:sales@freeswitch.com" target="_blank">sales@freeswitch.com</a><br>
<a href="https://freeswitch.com" rel="noreferrer" target="_blank">https://freeswitch.com</a><br>
<br>
Official FreeSWITCH Sites<br>
<a href="https://freeswitch.com/oss" rel="noreferrer" target="_blank">https://freeswitch.com/oss</a><br>
<a href="https://freeswitch.org/confluence" rel="noreferrer" target="_blank">https://freeswitch.org/confluence</a><br>
<a href="https://cluecon.com" rel="noreferrer" target="_blank">https://cluecon.com</a><br>
<br>
FreeSWITCH-users mailing list<br>
<a href="mailto:FreeSWITCH-users@lists.freeswitch.org" target="_blank">FreeSWITCH-users@lists.freeswitch.org</a><br>
<a href="http://lists.freeswitch.org/mailman/listinfo/freeswitch-users" rel="noreferrer" target="_blank">http://lists.freeswitch.org/mailman/listinfo/freeswitch-users</a><br>
UNSUBSCRIBE:<a href="http://lists.freeswitch.org/mailman/options/freeswitch-users" rel="noreferrer" target="_blank">http://lists.freeswitch.org/mailman/options/freeswitch-users</a><br>
<a href="https://freeswitch.com" rel="noreferrer" target="_blank">https://freeswitch.com</a></blockquote></div>
_________________________________________________________________________<br>
<br>
The FreeSWITCH project is sponsored by SignalWire <a href="https://signalwire.com" rel="noreferrer" target="_blank">https://signalwire.com</a><br>
Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.<br>
Build your next product on our scalable cloud platform.<br>
<br>
Join our online community to chat in real time <a href="https://signalwire.community" rel="noreferrer" target="_blank">https://signalwire.community</a><br>
<br>
Professional FreeSWITCH Services<br>
<a href="mailto:sales@freeswitch.com" target="_blank">sales@freeswitch.com</a><br>
<a href="https://freeswitch.com" rel="noreferrer" target="_blank">https://freeswitch.com</a><br>
<br>
Official FreeSWITCH Sites<br>
<a href="https://freeswitch.com/oss" rel="noreferrer" target="_blank">https://freeswitch.com/oss</a><br>
<a href="https://freeswitch.org/confluence" rel="noreferrer" target="_blank">https://freeswitch.org/confluence</a><br>
<a href="https://cluecon.com" rel="noreferrer" target="_blank">https://cluecon.com</a><br>
<br>
FreeSWITCH-users mailing list<br>
<a href="mailto:FreeSWITCH-users@lists.freeswitch.org" target="_blank">FreeSWITCH-users@lists.freeswitch.org</a><br>
<a href="http://lists.freeswitch.org/mailman/listinfo/freeswitch-users" rel="noreferrer" target="_blank">http://lists.freeswitch.org/mailman/listinfo/freeswitch-users</a><br>
UNSUBSCRIBE:<a href="http://lists.freeswitch.org/mailman/options/freeswitch-users" rel="noreferrer" target="_blank">http://lists.freeswitch.org/mailman/options/freeswitch-users</a><br>
<a href="https://freeswitch.com" rel="noreferrer" target="_blank">https://freeswitch.com</a></blockquote></div></div>