<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Setup is as following:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>X-Lite (Test phone) ------> SIP Proxy ------> FS (as SBC) ------> Carrier ------> End-user phone<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Whenever I place a call using X-Lite to the End-user phone, in this case my own mobile phone or office phone, and start sending DTMF tones from the remote telephone, the DMTF tones arrive with a crackling sound at the end of the tone.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Console debug:<o:p></o:p></p><p class=MsoNormal>2013-08-23 09:00:13.813207 [DEBUG] switch_rtp.c:3829 Send start packet for [2] ts=3778476449 dur=160/160/1280 seq=5098 lw=-516490847<o:p></o:p></p><p class=MsoNormal>2013-08-23 09:00:13.833208 [DEBUG] switch_rtp.c:3729 Send middle packet for [2] ts=3778476449 dur=320/320/1280 seq=5099 lw=161<o:p></o:p></p><p class=MsoNormal>2013-08-23 09:00:13.853208 [DEBUG] switch_rtp.c:3729 Send middle packet for [2] ts=3778476449 dur=480/480/1280 seq=5100 lw=161<o:p></o:p></p><p class=MsoNormal>2013-08-23 09:00:13.873208 [DEBUG] switch_rtp.c:3729 Send middle packet for [2] ts=3778476449 dur=640/640/1280 seq=5101 lw=161<o:p></o:p></p><p class=MsoNormal>2013-08-23 09:00:13.893208 [DEBUG] switch_rtp.c:3729 Send middle packet for [2] ts=3778476449 dur=800/800/1280 seq=5102 lw=161<o:p></o:p></p><p class=MsoNormal>2013-08-23 09:00:13.913208 [DEBUG] switch_rtp.c:3729 Send middle packet for [2] ts=3778476449 dur=960/960/1280 seq=5103 lw=161<o:p></o:p></p><p class=MsoNormal>2013-08-23 09:00:13.933208 [DEBUG] switch_rtp.c:3729 Send middle packet for [2] ts=3778476449 dur=1120/1120/1280 seq=5104 lw=161<o:p></o:p></p><p class=MsoNormal>2013-08-23 09:00:13.953207 [DEBUG] switch_rtp.c:3729 Send end packet for [2] ts=3778476449 dur=1280/1280/1280 seq=5105 lw=1<o:p></o:p></p><p class=MsoNormal>2013-08-23 09:00:13.953207 [DEBUG] switch_rtp.c:3729 Send end packet for [2] ts=3778476449 dur=1280/1280/1280 seq=5106 lw=1<o:p></o:p></p><p class=MsoNormal>2013-08-23 09:00:13.953207 [DEBUG] switch_rtp.c:3729 Send end packet for [2] ts=3778476449 dur=1280/1280/1280 seq=5107 lw=1<o:p></o:p></p><p class=MsoNormal>2013-08-23 09:00:14.813206 [DEBUG] switch_rtp.c:5117 RTP RECV DTMF 1:1280<o:p></o:p></p><p class=MsoNormal>2013-08-23 09:00:14.813206 [DEBUG] switch_channel.c:471 RECV DTMF 1:1280<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Both internal and external sip profiles have the following configuration for DTMF:<o:p></o:p></p><p class=MsoNormal><param name="liberal-dtmf" value="true"/><o:p></o:p></p><p class=MsoNormal><param name="rfc2833-pt" value="101"/><o:p></o:p></p><p class=MsoNormal><param name="dtmf-duration" value="2000"/><o:p></o:p></p><p class=MsoNormal><param name="inbound-codec-negotiation" value="generous"/><o:p></o:p></p><p class=MsoNormal><param name="inbound-late-negotiation" value="true"/><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Internal.xml (Dialplan)<o:p></o:p></p><p class=MsoNormal> <extension name="internal_to_external"><o:p></o:p></p><p class=MsoNormal> <condition field="${sip_req_host}" expression="^10\.0\.0\.1$"><o:p></o:p></p><p class=MsoNormal> <action application="set" data="hangup_after_bridge=false"/><o:p></o:p></p><p class=MsoNormal> <action application="set" data="continue_on_fail=true"/><o:p></o:p></p><p class=MsoNormal> <action application="bridge" data="sofia/external/${sip_req_uri}"/><o:p></o:p></p><p class=MsoNormal> </condition><o:p></o:p></p><p class=MsoNormal> </extension><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is there a way to tune the DTMF tones? If so, which parameters do I need to add or edit?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Grant<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>