[asterisk-ss7] Error: cause 34 - Circuit/channel congestion
Kaloyan Kovachev
kkovachev at varna.net
Fri Sep 28 10:26:42 CDT 2012
Hi,
unfortunately in your version there are no much debugging tools for ss7.
ss7 show channels|calls|cics would be helpful here, but not available. My
guess is that by some reason the CICs get blocked and are never unblocked,
as you receive incomming calls ... In sig_ss7.c for case ISUP_EVENT_IAM:
you may try to add unblocking (like in review 1676):
if (p->remotelyblocked) {
ast_log(LOG_NOTICE, "Got IAM on remotely blocked CIC %d DPC %d remove
blocking\n", e->iam.cic, e->iam.opc);
sig_ss7_set_remotelyblocked(p, 0);
sig_ss7_set_inservice(p, 1);
}
This should let you make outgoing calls on that CIC after you receive an
incoming call on it (if the blocking is the reason of course) and you may
also try unblocking the CIC or linkset manualy.
If this does not help you may try to backport ss7 show cics CLI command to
get more debug info
On Fri, 28 Sep 2012 07:16:01 -0700 (PDT), Marcus Vinicius
<marc_mcs10 at yahoo.com.br> wrote:
> Hi,
>
> I have 5 E1 with libss7 1.0.2 and Asterisk 1.8.10.1.
> The first one is with one telco and the others are with another telco.
>
> I noticed that after some weeks running, four of my circuit stop
working.
> I can't make calls. But I can receive calls without problem.
> When this happens, I can't see any IAM message on outgoing calls.
>
> When I try to make calls, I receive:
>
> -- Executing [1030851732342778 at from-sip:1] Goto("SIP/Rede-00000e9a",
> "telefonica-ld85,0851732342778,1") in new stack
> -- Goto (telefonica-ld85,0851732342778,1)
> -- Executing [0851732342778 at telefonica-ld85:1]
> Set("SIP/Rede-00000e9a", "CALLERPRES()=allowed") in new stack
> -- Executing [0851732342778 at telefonica-ld85:2]
> Dial("SIP/Rede-00000e9a", "DAHDI/r2/0851732342778,200") in new stack
> [Sep 27 17:03:44] WARNING[1072]: app_dial.c:2218 dial_exec_full: Unable
to
> create channel of type 'DAHDI' (cause 34 - Circuit/channel congestion)
> == Everyone is busy/congested at this time (1:0/1/0)
> -- Executing [0851732342778 at telefonica-ld85:3]
> Dial("SIP/Rede-00000e9a", "DAHDI/r12/0851732342778,200") in new stack
> [Sep 27 17:03:44] WARNING[1072]: app_dial.c:2218 dial_exec_full: Unable
to
> create channel of type 'DAHDI' (cause 34 - Circuit/channel congestion)
> == Everyone is busy/congested at this time (1:0/1/0)
> -- Executing [0851732342778 at telefonica-ld85:4]
> Hangup("SIP/Rede-00000e9a", "") in new stack
> == Spawn extension (telefonica-ld85, 0851732342778, 4) exited non-zero
> on 'SIP/Rede-00000e9a'
>
> I receive this error: "cause 34 - Circuit/channel congestion", but
> Asterisk didn't even send the IAM message.
>
> My linkset is UP all the time:
>
> SRR-JT-MGA01*CLI> dahdi show status
> Description Alarms IRQ bpviol CRC
Fra
> Codi Options LBO
> AP408 Card 1 Span 1 OK 0 0 0
CCS
> HDB3 0 db (CSU)/0-133 feet (DSX-1)
> AP408 Card 1 Span 2 OK 0 0 0
CCS
> HDB3 0 db (CSU)/0-133 feet (DSX-1)
> AP408 Card 1 Span 3 OK 0 0 0
CCS
> HDB3 0 db (CSU)/0-133 feet (DSX-1)
> AP408 Card 1 Span 4 OK 0 0 0
CCS
> HDB3 0 db (CSU)/0-133 feet (DSX-1)
> AP408 Card 1 Span 5 OK 0 0 0
CCS
> HDB3 0 db (CSU)/0-133 feet (DSX-1)
>
>
> SRR-JT-MGA01*CLI> ss7 show linkset 3
> SS7 linkset 3 status: Up
>
>
> SRR-JT-MGA01*CLI> dahdi show channels group 2
> Chan Extension Context Language MOH Interpret
> Blocked State
> 32 from-pstn-02 br
> default In Service
> 33 from-pstn-02 br
> default In Service
> 34 from-pstn-02 br
> default In Service
> 35 from-pstn-02 br
> default In Service
> 36 from-pstn-02 br
> default In Service
> 37 from-pstn-02 br
> default In Service
> 38 from-pstn-02 br
> default In Service
> 39 from-pstn-02 br
> default In Service
> 40 from-pstn-02 br
> default In Service
> 41 from-pstn-02 br
> default In Service
> 42 from-pstn-02 br
> default In Service
> 43 from-pstn-02 br
> default In Service
> 44 from-pstn-02 br
> default In Service
> 45 from-pstn-02 br
> default In Service
> 46 from-pstn-02 br
> default In Service
> 47 from-pstn-02 br
> default In Service
> 125 from-pstn-05 br
> default In Service
> 126 from-pstn-05 br
> default In Service
> 127 from-pstn-05 br
> default In Service
> 128 from-pstn-05 br
> default In Service
> 129 from-pstn-05 br
> default In Service
> 130 from-pstn-05 br
> default In Service
> 131 from-pstn-05 br
> default In Service
> 132 from-pstn-05 br
> default In Service
> 133 from-pstn-05 br
> default In Service
> 134 from-pstn-05 br
> default In Service
> 135 from-pstn-05 br
> default In Service
> 136 from-pstn-05 br
> default In Service
> 137 from-pstn-05 br
> default In Service
> 138 from-pstn-05 br
> default In Service
> 139 from-pstn-05 br
> default In Service
> 140 from-pstn-05 br
> default In Service
>
>
> To solve this issue, I need to make a "dahdi restart" command.
>
> After this, all come back to normally.
>
> But after several weeks (maybe five or six) I have the same problem
again.
>
> Anyone knows how can I make a more specific debug to diagnostic this?
>
>
> Config:
>
> ; SS7 GENERAL CONFIG
> signalling=ss7
> ss7type=itu
> ss7_called_nai=dynamic
> ss7_calling_nai=dynamic
> networkindicator=national
>
> ; ===== ===== THIS LINKSET WORKS WITH NO PROBLEM ALL THE TIME =====
===== ;
> linkset=1
>
> ;span 1
> pointcode=781
> defaultdpc=678
> adjpointcode=678
> context=from-pstn-01
>
> group=1
> cicbeginswith=1
> channel=>1-15
>
> group=11
> cicbeginswith=301
> channel=>17-31
> sigchan=16
>
>
> ; ===== ===== THIS LINKSET STOPS WORKING AFTER SOME WEEKS ===== ===== ;
> linkset=3
> pointcode=882
>
> ; span 2
> defaultdpc=2561
> context=from-pstn-02
>
> group=2
> cicbeginswith=1
> channel=>32-47
>
> group=12
> cicbeginswith=17
> channel=>48-62
>
> ; span 3
> defaultdpc=3993
> context=from-pstn-03
>
> group=3
> cicbeginswith=1
> channel=>63-77
>
> group=13
> cicbeginswith=17
> channel=>79-93
>
>
> ; span 4
> defaultdpc=3994
> context=from-pstn-04
>
> group=3,4
> cicbeginswith=1
> channel=>94-108
>
> group=13,4
> cicbeginswith=17
> channel=>110-124
>
>
> ; span 5
> defaultdpc=3995
> context=from-pstn-05
>
> group=2,5
> cicbeginswith=1
> channel=>125-140
>
> group=12,5
> cicbeginswith=17
> channel=>141-155
>
> adjpointcode=223
> sigchan=109
> sigchan=78
>
>
>
> Thanks a lot,
>
>
> --
> Marcus Vinícius
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