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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi;<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have a PBX connected to CUCM using MGCP QSIG, some random calls “only from PBX to IP Phones” is dropped after 4 or 5 seconds of the start of call to be connected “both parties hear each other”.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>In debug isdn q931 I got the below<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><i>Dec 19 12:01:53.820: ISDN Se1/0:15 Q931: RX <- SETUP pd = 8 callref = 0x026D <o:p></o:p></i></p><p class=MsoNormal><i> Sending Complete <o:p></o:p></i></p><p class=MsoNormal><i> Bearer Capability i = 0x8090A3 <o:p></o:p></i></p><p class=MsoNormal><i> Standard = CCITT <o:p></o:p></i></p><p class=MsoNormal><i> Transfer Capability = Speech <o:p></o:p></i></p><p class=MsoNormal><i> Transfer Mode = Circuit <o:p></o:p></i></p><p class=MsoNormal><i> Transfer Rate = 64 kbit/s <o:p></o:p></i></p><p class=MsoNormal><i> Channel ID i = 0xA18382 <o:p></o:p></i></p><p class=MsoNormal><i> Preferred, Channel 2 <o:p></o:p></i></p><p class=MsoNormal><i> Facility i = 0x9FAA068001008201008B0100A1100201010201553008820301B850860101 <o:p></o:p></i></p><p class=MsoNormal><i> Facility i = 0x9FAA068001008201008B0100A117020102020100800F49545353204D656574696E67205220 <o:p></o:p></i></p><p class=MsoNormal><i> Progress Ind i = 0x8183 - Origination address is non-ISDN <o:p></o:p></i></p><p class=MsoNormal><i> Calling Party Number i = 0x0181, '55555' <o:p></o:p></i></p><p class=MsoNormal><i> Plan:ISDN, Type:Unknown <o:p></o:p></i></p><p class=MsoNormal><i> Called Party Number i = 0xC9, '66666' <o:p></o:p></i></p><p class=MsoNormal><i> Plan:Private, Type:Subscriber(local) <o:p></o:p></i></p><p class=MsoNormal><i> User-User i = 0x00FE, 'U', 0x0100, 'Y', 0x0100B00C07, 'I', 0x81, '55555', 0x0F11828C82, 'Name01 ', 0x7F030F81000D05, 'I', 0x81, '30', 0xF2900E10818588, 'Name02' <o:p></o:p></i></p><p class=MsoNormal><i> Shift to Codeset 4 <o:p></o:p></i></p><p class=MsoNormal><i> Codeset 4 IE 0x31 i = 0x80<o:p></o:p></i></p><p class=MsoNormal><i>Dec 19 12:01:53.828: ISDN Se1/0:15 Q931: TX -> CALL_PROC pd = 8 callref = 0x826D <o:p></o:p></i></p><p class=MsoNormal><i> Channel ID i = 0xA98382 <o:p></o:p></i></p><p class=MsoNormal><i> Exclusive, Channel 2<o:p></o:p></i></p><p class=MsoNormal><i>Dec 19 12:01:53.828: ISDN Se1/0:15 Q931: TX -> ALERTING pd = 8 callref = 0x826D <o:p></o:p></i></p><p class=MsoNormal><i> Facility i = 0x9FAA06800100820100A117020101020101800F2A596F6E61732042656C6163686577 <o:p></o:p></i></p><p class=MsoNormal><i> Progress Ind i = 0x8088 - In-band info or appropriate now available <o:p></o:p></i></p><p class=MsoNormal><i>Dec 19 12:01:53.828: ISDN Se1/0:15 Q931: TX -> FACILITY pd = 8 callref = 0x826D <o:p></o:p></i></p><p class=MsoNormal><i> Facility i = 0x9FAA068001008201008B0100A115020101020114300D0A01000A010280053333303332<o:p></o:p></i></p><p class=MsoNormal><i>Dec 19 12:01:55.444: ISDN Se1/0:15 Q931: TX -> CONNECT pd = 8 callref = 0x826D <o:p></o:p></i></p><p class=MsoNormal><i> Facility i = 0x9FAA068001008201008B0100A123020101020116301B0101FFA0168014596F6E61732042656C61636865772D3333303332 <o:p></o:p></i></p><p class=MsoNormal><i> Facility i = 0x9FAA06800100820100A11C0201020201028014596F6E61732042656C61636865772D3333303332 <o:p></o:p></i></p><p class=MsoNormal><i> Connected Number i = 0x0081, '66666'<o:p></o:p></i></p><p class=MsoNormal><i><o:p> </o:p></i></p><p class=MsoNormal><i><o:p> </o:p></i></p><p class=MsoNormal><i>Dec 19 12:01:59.456: ISDN Se1/0:15 Q931: TX -> DISCONNECT pd = 8 callref = 0x826D <o:p></o:p></i></p><p class=MsoNormal><i> <b><span style='color:red'>Cause i = 0x80E6 - Recovery on timer expiry</span><o:p></o:p></b></i></p><p class=MsoNormal><i><o:p> </o:p></i></p><p class=MsoNormal>Do you think changing T310 timer will solve this or maybe it is another issue?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:gray'>Regards,<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:gray'>Ahmed Elnagar </span></b><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:gray'>|<b> Unified Communication Team Leader </b>| <b>CCIE #24697, Voice<o:p></o:p></b></span></p><p class=MsoNormal><span style='color:#1F497D'><img width=209 height=42 id="Picture_x0020_2" src="cid:image001.jpg@01CDDE47.1E82DF30" alt="Description: Description: Description: MS Green"></span><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>