08-11-2009 12:23 AM - edited 03-15-2019 07:17 PM
There are a PSTN, Cisco 2821 with two E1 ISDN streams and CCM6:
Single scheme:
CCM6 <=(eth)=> GW2821 <=(two E1 controllers)=> PSTN
The problem is that the engineer of digital stations says that first 11 channels in first E1 stream are blocked by station due to some troubles with them.
When I try to see the ISDN status or E1 controllers statuses on GW2821 everything is ok.
How could I find out what is wrong with these first 11 channels in first E1 ?
08-11-2009 01:34 AM
08-11-2009 01:47 AM
Take "debug isdn q931" with "term mon" for a failed call and check.
08-11-2009 06:35 PM
#debug isdn q931
Aug 12 10:10:29.067: ISDN Se0/0/0:15 Q931: TX -> SETUP pd = 8 callref = 0x0009
Sending Complete
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98381
Exclusive, Channel 1
Calling Party Number i = 0x2181, '3842551177'
Plan:ISDN, Type:National
Called Party Number i = 0xA1, '9030678602'
Plan:ISDN, Type:National
Aug 12 10:10:29.103: ISDN Se0/0/0:15 Q931: RX <- RELEASE_COMP pd = 8 callref = 0x8009
Cause i = 0x82AC - Requested circuit/channel not available
Display i = 'REQUESTED CHANNEL NOT AVAILABLE'
Aug 12 10:10:29.123: ISDN Se0/0/1:15 Q931: TX -> SETUP pd = 8 callref = 0x014B
Sending Complete
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98381
Exclusive, Channel 1
Calling Party Number i = 0x2181, '3842551177'
Plan:ISDN, Type:National
Called Party Number i = 0xA1, '9030678602'
Plan:ISDN, Type:National
Aug 12 10:10:29.159: ISDN Se0/0/1:15 Q931: RX <- CALL_PROC pd = 8 callref = 0x814B
Channel ID i = 0xA98381
Exclusive, Channel 1
Aug 12 10:10:32.227: ISDN Se0/0/1:15 Q931: RX <- ALERTING pd = 8 callref = 0x814B
Progress Ind i = 0x8488 - In-band info or appropriate now available
Aug 12 10:10:36.331: ISDN Se0/0/1:15 Q931: RX <- CONNECT pd = 8 callref = 0x814B
Connected Number i = '!', 0x83, '9030678602'
Aug 12 10:10:36.339: ISDN Se0/0/1:15 Q931: TX -> CONNECT_ACK pd = 8 callref = 0x014B
Aug 12 10:10:40.019: ISDN Se0/0/1:15 Q931: TX -> DISCONNECT pd = 8 callref = 0x014B
Cause i = 0x8A90 - Normal call clearing
Aug 12 10:10:40.039: ISDN Se0/0/1:15 Q931: RX <- RELEASE pd = 8 callref = 0x814B
Aug 12 10:10:40.047: ISDN Se0/0/1:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x014B
As I understand the problem is:
Cause i = 0x82AC - Requested circuit/channel not available
Display i = 'REQUESTED CHANNEL NOT AVAILABLE'
But how to detect why this happens?
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