<html><body bgcolor="#FFFFFF"><div><span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); font-size: medium; "><action application="set" data="proxy_media=true"/></span><br><br></div><div>As indicated by the error, this is the problem. "proxy passthrough". In proxy mode you pass the media straight through (passthrough). You can't process passthrough media, such as is needed to mix in inband dtmf.</div><div><br></div><div>Use proxy_media=false and bypass_media=false. That's actually the default so unless you're setting either to true in the sip profile, you can remove those lines from the dialplan completely.</div><div><br>Steve on iPhone</div><div><br>On 20 Feb 2011, at 18:51, Mac <<a href="mailto:mbsip@gazeta.pl">mbsip@gazeta.pl</a>> wrote:<br><br></div><blockquote type="cite">action application="set" data="proxy_media=true"/></blockquote><div></div></body></html>