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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If you have an ISR, you can do this with just using software MTP resources instead of DSPs.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net] <b>On Behalf Of </b>Paul van den IJssel<br><b>Sent:</b> Tuesday, June 01, 2010 4:34 PM<br><b>To:</b> cisco-voip@puck.nether.net<br><b>Subject:</b> [cisco-voip] SIP Trunk for ISP's - DTMF SIP Notify<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>Hi Guys,<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>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'.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>How do I get this to work without the use of a hardware Transcoder?<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Best regards,<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Paul van den IJssel<o:p></o:p></p></div><div><p class=MsoNormal>Digacom<o:p></o:p></p></div></div></div></body></html>
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