[cisco-voip] Recovery on timer expiry QSIG

[Ahmed Elnagar]

Hi;

 

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".

 

In debug isdn q931 I got the below

 

Dec 19 12:01:53.820: ISDN Se1/0:15 Q931: RX <- SETUP pd = 8  callref =
0x026D 

        Sending Complete 

        Bearer Capability i = 0x8090A3 

                Standard = CCITT 

                Transfer Capability = Speech  

                Transfer Mode = Circuit 

                Transfer Rate = 64 kbit/s 

        Channel ID i = 0xA18382 

                Preferred, Channel 2 

        Facility i =
0x9FAA068001008201008B0100A1100201010201553008820301B850860101 

        Facility i =
0x9FAA068001008201008B0100A117020102020100800F49545353204D656574696E67205220


        Progress Ind i = 0x8183 - Origination address is non-ISDN  

        Calling Party Number i = 0x0181, '55555' 

                Plan:ISDN, Type:Unknown 

        Called Party Number i = 0xC9, '66666' 

                Plan:Private, Type:Subscriber(local) 

        User-User i = 0x00FE, 'U', 0x0100, 'Y', 0x0100B00C07, 'I', 0x81,
'55555', 0x0F11828C82, 'Name01 ', 0x7F030F81000D05, 'I', 0x81, '30',
0xF2900E10818588, 'Name02' 

        Shift to Codeset 4 

        Codeset 4 IE 0x31  i = 0x80

Dec 19 12:01:53.828: ISDN Se1/0:15 Q931: TX -> CALL_PROC pd = 8  callref =
0x826D 

        Channel ID i = 0xA98382 

                Exclusive, Channel 2

Dec 19 12:01:53.828: ISDN Se1/0:15 Q931: TX -> ALERTING pd = 8  callref =
0x826D 

        Facility i =
0x9FAA06800100820100A117020101020101800F2A596F6E61732042656C6163686577 

        Progress Ind i = 0x8088 - In-band info or appropriate now available 

Dec 19 12:01:53.828: ISDN Se1/0:15 Q931: TX -> FACILITY pd = 8  callref =
0x826D 

        Facility i =
0x9FAA068001008201008B0100A115020101020114300D0A01000A010280053333303332

Dec 19 12:01:55.444: ISDN Se1/0:15 Q931: TX -> CONNECT pd = 8  callref =
0x826D 

        Facility i =
0x9FAA068001008201008B0100A123020101020116301B0101FFA0168014596F6E6173204265
6C61636865772D3333303332 

        Facility i =
0x9FAA06800100820100A11C0201020201028014596F6E61732042656C61636865772D333330
3332 

        Connected Number i = 0x0081, '66666'

 

 

Dec 19 12:01:59.456: ISDN Se1/0:15 Q931: TX -> DISCONNECT pd = 8  callref =
0x826D 

        Cause i = 0x80E6 - Recovery on timer expiry

 

Do you think changing T310 timer will solve this or maybe it is another
issue?

 

Regards,

Ahmed Elnagar | Unified Communication Team Leader | CCIE #24697, Voice

Description: Description: Description: MS Green

 

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