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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='color:#1F497D'>Hello Guys –<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Sorry about that – it transpired that ISP has misconfigured DTMF-relay on their on-site router…<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Thank you, as always,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Nikola<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>-------------------------------------------<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Nikola Stojsin<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>PhD CCIE #12888<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><a href="mailto:nikolas@networkmakers.com"><span style='color:#1F497D'>nikolas@networkmakers.com</span></a><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>http://www.networkmakers.com<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>-------------------------------------------<o:p></o:p></span></p></div><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><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>Nikola Stojsin<br><b>Sent:</b> Sunday, December 26, 2010 11:32 AM<br><b>To:</b> cisco-voip@puck.nether.net<br><b>Cc:</b> nikola@att.net<br><b>Subject:</b> [cisco-voip] DTMF Relay Problem<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>Hello Guys –<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I am having a problem with a small office that has just moved to a new location/circuit; it runs CallManager 4.3.x and Unity 4.2.1 (to be upgraded in a couple of months!), with a Cisco 2811 as a MGCP gateway with a single PRI.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>In their old location, they ran on a regular smartjack PRI without any issues; now they are on a flexible circuit (6 bonded T1s, via ISP’s on-site 3845), which still provides a PRI interface. Everything works fine, apart from a DTMF relay problem on calls from PSTN. Basically, I am seeing duplicate DTMF entries in the Port Status Monitor – in other words, if someone pressess 9892, the port monitor shows 9988992; and then, after about five to seven seconds, or a forward to a subhandler, no DTMFs are being forwarded at all. (Incidentally, the same company has two more locations with the same type of flexible circuit – with no problems whatsover.)<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Now, I have checked CSCso87127, and have upgraded gateway’s IOS to 12.4(15)T14; DMTF relay is set up for out-of-band in the MGCP configuration. I am considering switching the gateway to H323 – and have opened a trouble ticket with the ISP.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Has anyone seen this behavior before and/or has a suggestion?<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Thank you, as always,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Nikola<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>P. S.: Happy holidays to everyone!<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>-------------------------------------------<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Nikola Stojsin<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>PhD CCIE #12888<o:p></o:p></span></p><p class=MsoNormal><a href="mailto:nikolas@networkmakers.com"><span style='color:#1F497D'>nikolas@networkmakers.com</span></a><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><a href="http://www.networkmakers.com">http://www.networkmakers.com</a><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>-------------------------------------------<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>