<font face="arial, helvetica, sans-serif">We have a SIP trunk to Verizon, Long Distance, Local and international work fine, however, for toll free calls, DTMF does not function.</font><div><font face="arial, helvetica, sans-serif"><br>
</font></div><div><font face="arial, helvetica, sans-serif">We are set to send RTP-NTE, but Verizon is saying that we are sending this:</font></div><div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif">a=rtpmap:101 X-NSE/8000 </font></div>
<div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif">And it should be:</font></div><div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif">telephone-event/8000</font></div>
<div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif">And that is why it is failing.</font></div><div><font face="arial, helvetica, sans-serif"><br></font></div><div>
<font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif">What configuration change can we do to force it to send the right DTMF method?</font></div>
<div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif">This is on a Cisco 3825 CUBE running 12.2.20.T4 (per Verizon's request), there is a software MTP and Transcoder on the router (both in use)... Verizon says it is not their problem and closed their ticket.</font></div>
<div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif">Relevant SIP Config:</font></div><div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif"><div>
<br></div><div>!</div><div>voice call send-alert</div><div>voice rtp send-recv</div><div>!</div><div>voice service voip </div><div> allow-connections h323 to h323</div><div> allow-connections h323 to sip</div><div> allow-connections sip to h323</div>
<div> allow-connections sip to sip</div><div> no supplementary-service sip refer</div><div> redirect ip2ip</div><div> h323</div><div> h225 display-ie ccm-compatible</div><div> modem passthrough nse payload-type 101 codec g711ulaw</div>
<div> sip</div><div> bind media source-interface MFR1</div><div> early-offer forced</div><div> midcall-signaling passthru</div><div>!</div><div>!</div></font></div><div><font face="arial, helvetica, sans-serif"><div><br>
</div><div>dial-peer voice 800 voip</div><div> description OUTBOUND Voice SIP calls to VzB</div><div> destination-pattern 1800[2-9]......</div><div> voice-class sip dtmf-relay force rtp-nte</div><div> session protocol sipv2</div>
<div> session target sip-server</div><div> incoming called-number .</div><div> dtmf-relay rtp-nte</div><div> codec g711ulaw</div><div> no vad</div></font></div><div><font face="arial, helvetica, sans-serif"><br></font></div>
<div><font face="arial, helvetica, sans-serif"><div><br></div><div>!</div><div>sip-ua </div><div> retry invite 2</div><div> retry bye 2</div><div> retry cancel 2</div><div> registrar dns:verizonsipgateway expires 3600</div>
<div> sip-server
dns:verizonsipgateway:5071</div><div> g729-annexb override</div><div>!</div></font></div><div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif"><br></font></div><div>
<font face="arial, helvetica, sans-serif">Jonathan</font></div>