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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Don’t trunk directly to your CUCM
7.x from an ITSP, this is a design consideration that should have been
identified before deployment of the trunk. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Paul van den IJssel<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, June 01, 2010 3:53
PM<br>
<b><span style='font-weight:bold'>To:</span></b> cisco-voip@puck.nether.net<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [cisco-voip] SIP
Trunk for ISP's - DTMF SIP Notify</span></font><o:p></o:p></p>
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<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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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>The SIP Trunk is directly connected to the CUCM (7.X). So there is no
ISR, or CUBE in between. <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>The System Guide of CUCM 7.X states that only the 7971 7975 support
RFC2833. Currently I'm running the test with 7941 and 7961 phones. Also all
regions are set to use g.711 and there is no MRGL associated to the Device
Pools of the phones and the SIP Trunk.<o:p></o:p></span></font></p>
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<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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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>If I try setting up a call and run the RTMT tool I don't see the CUCM
using any MTP's. The SBC which is used isn't a Cisco CUBE.. but I've lost the
name, I thought it was a NextTone or something.<o:p></o:p></span></font></p>
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<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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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>- Paul<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>2010/6/1 Ryan Ratliff <<a href="mailto:rratliff@cisco.com">rratliff@cisco.com</a>><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>What phones do you have? Most of them do in fact support RFC2833.<br>
Additionally, using g.711 for rtp the software MTP resources on your CUCM can
convert the dtmf just fine.<br>
<br>
Even if you are using g729 you can use a software MTP on the router acting as
your CUBE to do the necessary dtmf conversion which doesn't require any
hardware DSPs.<br>
<br>
-Ryan<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
On Jun 1, 2010, at 4:34 PM, Paul van den IJssel wrote:<br>
<br>
> Hi Guys,<br>
><br>
> Currently I'm testing a SIP Trunk with our ISP. Everything is working fine
but I don't get the DTMF to work. This because my SCCP phones only support OOB
DTMF. So to get it to work with SIP RFC2833 (in-band) I need an expensive
transcoder. But now we've set the SIP Trunk to SIP Notify (out-band) which
should work with the IP Phones OOB, but all I get is 'SIP/2.0 403 Forbidden'.<br>
><br>
> How do I get this to work without the use of a hardware Transcoder?<br>
><br>
> Best regards,<br>
><br>
> Paul van den IJssel<br>
> Digacom<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>> _______________________________________________<br>
> cisco-voip mailing list<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>> <a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><o:p></o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>> <a
href="https://puck.nether.net/mailman/listinfo/cisco-voip" target="_blank">https://puck.nether.net/mailman/listinfo/cisco-voip</a><o:p></o:p></span></font></p>
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<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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