What does your SDP show using debug ccsip all?<br><br>I've ran into this
before where the provider had a different RTP map to their IP customers
vs their ISDN customers. What I had to do was create separate
dialpeers for those numbers with a different RTP map. See example
below:<br><br><p class="MsoNormal">v=0</p>
<p class="MsoNormal">o=CiscoSystemsSIP-GW-UserAgent 9601 2828 IN IP4 X.X.X.X</p>
<p class="MsoNormal">s=<span class="il">SIP</span> Call</p>
<p class="MsoNormal">c=IN IP4 X.X.X.X</p>
<p class="MsoNormal">t=0 0</p>
<p class="MsoNormal">m=audio 16384 RTP/AVP 18 0 101</p>
<p class="MsoNormal">c=IN IP4 10.8.2.4</p>
<p class="MsoNormal">a=rtpmap:18 G729/8000</p>
<p class="MsoNormal">a=fmtp:18 annexb=yes</p>
<p class="MsoNormal">a=rtpmap:0 PCMU/8000</p>
<p class="MsoNormal"><span style="background:yellow">a=rtpmap:101
X-NSE/8000</span></p>
<p class="MsoNormal">a=fmtp:101 192-194</p><p class="MsoNormal"><br></p><p class="MsoNormal">v=0</p>
<p class="MsoNormal">o=Sonus_UAC 16372 5325 IN IP4 X.X.X.X</p>
<p class="MsoNormal">s=<span class="il">SIP</span> Media Capabilities</p>
<p class="MsoNormal">c=IN IP4 X.X.X.X</p>
<p class="MsoNormal">t=0 0</p>
<p class="MsoNormal">m=audio
23002 RTP/AVP 18 0 100</p>
<p class="MsoNormal">a=rtpmap:18
G729/8000</p>
<p class="MsoNormal">a=rtpmap:0 PCMU/8000</p>
<p class="MsoNormal"><span style="background:yellow">a=rtpmap:100
telephone-event/8000</span></p>
<p class="MsoNormal">a=fmtp:100
0-15</p>
<p class="MsoNormal">a=sendrecv</p>
<p class="MsoNormal">a=maxptime:20</p><p class="MsoNormal"><br></p><p class="MsoNormal">As mentioned above the yellow highlighted portion of the SDP’s
is where we can see a mismatch in our payload type.<span> </span>You can see the telco is sending 100 and we
are sending 101.<span> </span>To resolve this issue
you have to remap the rtp payload type for signaling and telephony events.<span> </span>Here is the commands I had to run to send 100
as our NTE to match what the provider was expecting…</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Lincoln-VG01(config-dial-peer)#rtp payload-type nse 98</p>
<p class="MsoNormal">Lincoln-VG01(config-dial-peer)#rtp payload-type nte 100</p>
<p class="MsoNormal">Lincoln-VG01(config-dial-peer)#rtp payload-type nse 101</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Because the signaling is defaulted at nte 101 and nse 100
you have to remove 100 from nse by assigning it a random unused value before
you can assign 100 to nte.<span> </span>See this image
for the default reserved values: <a href="https://communities.cisco.com/servlet/JiveServlet/downloadImage/2-5295-2243/450-185/defaultpayloadtype.png" target="_blank">https://communities.cisco.com/servlet/JiveServlet/downloadImage/2-5295-2243/450-185/defaultpayloadtype.png</a></p>
<div class="gmail_quote"><br>Hope this helps,<br><br>Derek<br><br>On Tue, Oct 16, 2012 at 7:25 AM, <span dir="ltr"><<a href="mailto:george.hendrix@l-3com.com" target="_blank">george.hendrix@l-3com.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-US">
<div>
<p class="MsoNormal">Hey guys,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"> We have an odd issue going on with DTMF. Below is the path to the PSTN.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">CUCM <-> h.323 Gateway <-> SIP Provider.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">The problem is that when we dial into this one external number and press 1 to select option 1, it doesn’t seem to accept the digit. If we dial into that same number from anywhere else, it works fine. Having said that, I can dial into
other numbers from the system and have no issue at all with dtmf. Any ideas of what this issue is?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thanks,<u></u><u></u></p>
<p class="MsoNormal">Bill<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div>
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