<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" class="gmail_signature" data-smartmail="gmail_signature"><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">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>
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