Hi Everyone,
I was wondering if anyone has seen this before. One of our customer has an ISDN BRI on an MGCP gateway and connected to CUCM. They report that when they try to make a call it doesn't always go through, i.e. they have to try a few times before it works. An output of the debugs from q931 and error is shown below. There has not been any changes on the gateway for quite a while. I know it is really possible to be a provider problem but still what is it??
Thanks for your help.
David
Mar 13 06:50:21.543: ISDN BR0/1/0 SERROR: L2_Go: at bailout DLCB is NULL
L2: sapi 63 tei 127 ces 0 ev 0x3
Mar 13 06:50:21.543: ISDN BR0/1/0 SERROR: L2_Go: at bailout DLCB is NULL
L2: sapi 63 tei 127 ces 0 ev 0x650
Mar 13 08:50:05.253: ISDN BR0/0/0 Q931: TX -> SETUP pd = 8 callref = 0x15
Sending Complete
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0x89
Exclusive, B1
Calling Party Number i = 0x00A1, '018XXXXXXXX'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80, '018XXXXXXXX'
Plan:Unknown, Type:Unknown
Mar 13 08:50:05.481: ISDN BR0/0/0 Q931: RX <- CALL_PROC pd = 8 callref = 0x95
Channel ID i = 0x89
Exclusive, B1
Notification Ind i = 0xE8
Mar 13 08:50:08.369: ISDN BR0/0/0 Q931: RX <- ALERTING pd = 8 callref = 0x95
Progress Ind i = 0x8482 - Destination address is non-ISDN
Mar 13 08:50:11.601: ISDN BR0/0/0 Q931: RX <- CONNECT pd = 8 callref = 0x95
Mar 13 08:50:11.613: ISDN BR0/0/0 Q931: TX -> CONNECT_ACK pd = 8 callref = 0x15
Mar 13 08:50:49.245: ISDN BR0/0/0 Q931: TX -> DISCONNECT pd = 8 callref = 0x15
Cause i = 0x8490 - Normal call clearing
Mar 13 08:50:49.413: ISDN BR0/0/0 Q931: RX <- RELEASE pd = 8 callref = 0x95
Mar 13 08:50:49.429: ISDN BR0/0/0 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x15
Mar 13 09:20:48.741: ISDN BR0/0/0 Q931: TX -> SETUP pd = 8 callref = 0x16
Sending Complete
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0x89
Exclusive, B1
Calling Party Number i = 0x00A1, '018XXXXXXXX'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80, '86XXXXX'
Plan:Unknown, Type:Unknown
Mar 13 09:20:48.965: ISDN BR0/0/0 Q931: RX <- CALL_PROC pd = 8 callref = 0x96
Channel ID i = 0x89
Exclusive, B1
Notification Ind i = 0xE8
Mar 13 09:20:50.733: ISDN BR0/0/0 Q931: TX -> DISCONNECT pd = 8 callref = 0x16
Cause i = 0x8090 - Normal call clearing
Mar 13 09:20:50.885: ISDN BR0/0/0 Q931: RX <- RELEASE pd = 8 callref = 0x96
Mar 13 09:20:50.897: ISDN BR0/0/0 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x16
Mar 13 09:21:00.709: ISDN BR0/0/0 Q931: TX -> SETUP pd = 8 callref = 0x17
Sending Complete
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0x89
Exclusive, B1
Calling Party Number i = 0x00A1, '018XXXXXXXX'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80, '86XXXX'
Plan:Unknown, Type:Unknown
Mar 13 09:21:00.961: ISDN BR0/0/0 Q931: RX <- CALL_PROC pd = 8 callref = 0x97
Channel ID i = 0x89
Exclusive, B1
Notification Ind i = 0xE8
Mar 13 09:21:04.369: ISDN BR0/0/0 Q931: RX <- ALERTING pd = 8 callref = 0x97
Mar 13 09:21:17.673: ISDN BR0/0/0 Q931: RX <- CONNECT pd = 8 callref = 0x97
Mar 13 09:21:17.685: ISDN BR0/0/0 Q931: TX -> CONNECT_ACK pd = 8 callref = 0x17
Mar 13 09:22:49.005: ISDN BR0/0/0 Q931: RX <- DISCONNECT pd = 8 callref = 0x97
Cause i = 0x8090 - Normal call clearing
Progress Ind i = 0x8288 - In-band info or appropriate now available
Mar 13 09:22:49.029: ISDN BR0/0/0 Q931: TX -> RELEASE pd = 8 callref = 0x17
Mar 13 09:22:49.101: ISDN BR0/0/0 Q931: RX <- RELEASE_COMP pd = 8 callref = 0x97
Mar 13 09:25:38.240: ISDN BR0/0/0 Q931: TX -> SETUP pd = 8 callref = 0x18
Sending Complete
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0x89
Exclusive, B1
Calling Party Number i = 0x00A1, '018XXXXXXXX'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80, '018XXXXXXXX'
Plan:Unknown, Type:Unknown
Mar 13 09:25:38.500: ISDN BR0/0/0 Q931: RX <- CALL_PROC pd = 8 callref = 0x98
Channel ID i = 0x89
Exclusive, B1
Notification Ind i = 0xE8
Mar 13 09:25:43.048: ISDN BR0/0/0 Q931: RX <- ALERTING pd = 8 callref = 0x98
Progress Ind i = 0x8482 - Destination address is non-ISDN
Mar 13 09:25:55.732: ISDN BR0/0/0 Q931: RX <- CONNECT pd = 8 callref = 0x98
Mar 13 09:25:55.748: ISDN BR0/0/0 Q931: TX -> CONNECT_ACK pd = 8 callref = 0x18
Mar 13 09:29:16.011: ISDN BR0/0/0 Q931: RX <- FACILITY pd = 8 callref = N/A
Facility i = 0x91A1270202400002010C301E0A01010A0101A016A014A10F0A0102120A313436313230313230300A0100
Protocol Profile = Remote Operations Protocol
0xA1270202400002010C301E0A01010A0101A016A014A10F0A0102120A313436313230313230300A0100
Component = Invoke component, Unsupported operation
Called Party Number i = 0x81, '86XXXX'
Plan:ISDN, Type:Unknown
Mar 13 09:29:16.015: ISDN BR0/0/0 SERROR: L2_Go: at bailout DLCB is NULL
L2: sapi 0 tei 127 ces 0 ev 0x3
Mar 13 09:31:18.531: ISDN BR0/0/0 Q931: RX <- FACILITY pd = 8 callref = N/A
Facility i = 0x91A1270202400002010C301E0A01010A0103A016A014A10F0A0102120A313537333432303631370A0100
Protocol Profile = Remote Operations Protocol
0xA1270202400002010C301E0A01010A0103A016A014A10F0A0102120A313537333432303631370A0100
Component = Invoke component, Unsupported operation
Called Party Number i = 0x81, '86XXXX'
Plan:ISDN, Type:Unknown
Mar 13 09:31:18.531: ISDN BR0/0/0 SERROR: L2_Go: at bailout DLCB is NULL
L2: sapi 0 tei 127 ces 0 ev 0x3
Mar 13 09:33:06.558: ISDN BR0/0/0 Q931: RX <- FACILITY pd = 8 callref = N/A
Facility i = 0x91A1270202400002010C301E0A01010A0103A016A014A10F0A0102120A373937393337373639360A0103
Protocol Profile = Remote Operations Protocol
0xA1270202400002010C301E0A01010A0103A016A014A10F0A0102120A373937393337373639360A0103
Component = Invoke component, Unsupported operation
Called Party Number i = 0x81, '86XXXX'
Plan:ISDN, Type:Unknown
Mar 13 09:33:06.562: ISDN BR0/0/0 SERROR: L2_Go: at bailout DLCB is NULL
L2: sapi 0 tei 127 ces 0 ev 0x3
Mar 13 09:33:36.362: ISDN BR0/0/0 Q931: TX -> DISCONNECT pd = 8 callref = 0x18
Cause i = 0x8090 - Normal call clearing
Mar 13 09:33:36.534: ISDN BR0/0/0 Q931: RX <- RELEASE pd = 8 callref = 0x98
Mar 13 09:33:36.554: ISDN BR0/0/0 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x18
Mar 13 09:39:57.248: ISDN BR0/0/0 Q931: RX <- FACILITY pd = 8 callref = N/A
Facility i = 0x91A1270202400002010C301E0A01010A0101A016A014A10F0A0102120A313338323232343131320A0100
Protocol Profile = Remote Operations Protocol
0xA1270202400002010C301E0A01010A0101A016A014A10F0A0102120A313338323232343131320A0100
Component = Invoke component, Unsupported operation
Called Party Number i = 0x81, '86XXXX'
Plan:ISDN, Type:Unknown
Mar 13 09:39:57.248: ISDN BR0/0/0 SERROR: L2_Go: at bailout DLCB is NULL
L2: sapi 0 tei 127 ces 0 ev 0x3
