<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">We are using <span style="color: rgb(77, 47, 45); font-family: Courier; background-color: rgb(223, 219, 195);" class="">FreeSWITCH Version 1.6.19-36-7a77e0b~64bit (-36-7a77e0b 64bit)</span><div>Thanks for your help!</div><div><br class=""><blockquote type="cite" class=""><div class="">Am 29.01.2018 um 15:35 schrieb Roman Dissauer <<a href="mailto:roman@dissauer.net" class="">roman@dissauer.net</a>>:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Guys,<div class=""><br class=""></div><div class="">we have troubles reliably recognizing DTMF tones by using dialplan application start_dtmf.</div><div class="">From our carriers we get some calls with inband DTMF and some with RFC2833. To our customers we need to always do RFC2833. Therefore we check SDP information and enable start_dtmf when RFC2833 is not available on the incoming call. When start_dtmf is executed we have a lot of false positives mostly at the start of audio but also during the call.</div><div class=""><br class=""></div><div class="">Is there a way to prevent false DTMF detection? Does anyone have same issues and a solution for it?</div><div class=""><br class=""></div><div class="">Kind regards<br class=""><div class=""><div class="">Roman Dissauer</div><div class=""><br class=""></div><div class=""><div class=""><font face="GillSans-SemiBold" color="#53655a" class=""><b class="">RDI SOLUTIONS e.U.</b></font></div><div class=""><font face="GillSans-Light" color="#4d4e4c" class="">Rosasgasse 13/24</font></div><div class=""><font face="GillSans-Light" color="#4d4e4c" class="">1120 Wien, Österreich</font></div><div class=""><font face="GillSans-Light" color="#4d4e4c" class="">T: +43 1 3530349 - 10</font></div><div class=""><font face="GillSans-Light" color="#4d4e4c" class="">F: +43 1 3530349 - 99</font></div><div class=""><font face="GillSans-Light" color="#4d4e4c" class=""><a href="mailto:roman.dissauer@rdi.at" class="">roman.dissauer@rdi.at</a></font></div><div class=""><font color="#4d4e4c" face="GillSans-SemiBold" class=""><b class=""><a href="http://www.rdi.at/" class="">www.rdi.at</a></b></font></div><div class=""><font color="#4d4e4c" face="GillSans-SemiBold" class=""><b class=""><br class=""></b></font></div></div></div></div></div>_________________________________________________________________________<br class="">Professional FreeSWITCH Consulting Services:<br class=""><a href="mailto:consulting@freeswitch.org" class="">consulting@freeswitch.org</a><br class="">http://www.freeswitchsolutions.com<br class=""><br class="">Official FreeSWITCH Sites<br class="">http://www.freeswitch.org<br class="">http://confluence.freeswitch.org<br class="">http://www.cluecon.com<br class=""><br class="">FreeSWITCH-users mailing list<br class="">FreeSWITCH-users@lists.freeswitch.org<br class="">http://lists.freeswitch.org/mailman/listinfo/freeswitch-users<br class="">UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users<br class="">http://www.freeswitch.org</div></blockquote></div><br class=""></body></html>