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<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;mso-bidi-font-family:"Times New Roman"'>I have a CallManager
Express router with registered IP <span class=GramE>phones, that</span> utilize
a SIP trunk through my ISP for PSTN service. DTMF-relay fails from IP phone to
PSTN endpoint. My SIP trunk provider tells me that I need to send my dtmf
digits in-band, using RFC2833. According to the docs, I can force this at my voip
dial-peers with "dtmf-relay rtp-nte" statement applied, but yet I am
still having the problem. Whether the call is:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;mso-bidi-font-family:"Times New Roman"'>1) <span
class=GramE>originating</span> from the CME router, or <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;mso-bidi-font-family:"Times New Roman"'>2) <span
class=GramE>from</span> an Enterprise 4.1.3(SR2) CallManager - SIP <span
class=SpellE>trunked</span> to my CME router, to a second SIP trunk for the
PSTN.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;mso-bidi-font-family:"Times New Roman"'>Any ideas on why
DTMF is failing?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;mso-bidi-font-family:"Times New Roman"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;mso-bidi-font-family:"Times New Roman"'>-Greg</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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