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Charles ALI Digium TE131/TE133: Alamrs RED
Hello,
We have two Elastix NLX 4000 servers, with two Digium cards TE131 / TE133, They have all been working fine up until now. But for two days, we have problems.
Outbound call show:
[2016-06-28 06:13:20] WARNING[10307][C-00000000]: app_dial.c:2437 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 [s@macro-dialout-trunk:23] NoOp("SIP/8000-00000000", "Dial failed for some reason with DIALSTATUS = CONGESTION and HANGUPCAUSE = 34") in new stack
The system shows that cards are detected well and configured (with the commands dmesg and vim /etc/var/log /messages) but when we make “dahdi show status” (without having connected the E1 line ) we have:
elx*CLI> dahdi show status Description Alarms IRQ bpviol CRC Fra Codi Options LBO Wildcard TE131/TE133 Card 0 BLU/RED 0 0 0 CCS HDB3 0 db (CSU)/0-133 feet (DSX-1) elx*CLI>
The Alarms must be OK
Our two cards simultaneously had the same problem.
And when we active PRI debug, we have
elx*CLI> pri set debug on span 1 Enabled debugging on span 1 PRI Span: 1 TEI=0 Sending SABME PRI Span: 1 TEI=0 MDL-ERROR (G): T200 expired N200 times sending SABME in state 5(Awaiting establishment) PRI Span: 1 Changing from state 5(Awaiting establishment) to 4(TEI assigned) PRI Span: 1 TEI=0 DL event: Q931_DL_EVENT_DL_RELEASE_IND(3) PRI Span: 1 SAPI/TEI=0/0 Kick starting link PRI Span: 1 TEI=0 Sending SABME PRI Span: 1 Changing from state 4(TEI assigned) to 5(Awaiting establishment) PRI Span: 1 TEI=0 Sending SABME PRI Span: 1 TEI=0 Sending SABME PRI Span: 1 TEI=0 Sending SABME PRI Span: 1 TEI=0 MDL-ERROR (G): T200 expired N200 times sending SABME in state 5(Awaiting establishment) PRI Span: 1 Changing from state 5(Awaiting establishment) to 4(TEI assigned) PRI Span: 1 TEI=0 DL event: Q931_DL_EVENT_DL_RELEASE_IND(3) PRI Span: 1 SAPI/TEI=0/0 Kick starting link PRI Span: 1 TEI=0 Sending SABME PRI Span: 1 Changing from state 4(TEI assigned) to 5(Awaiting establishment)
Thank’s (sorry for my English)
Joseph (Sangoma) From your first post, we can see that, cause 34 - Circuit/channel congestion, is the problem. When you run dahdi show status you do not see any alarm. You can also use dahdi_tool to see status. Then we can see the system Sending SABME to the provider and Awaiting establishment but they do not get any response. This data points to the issue being with your telco, or telco equiptment. If you have a PRI gateway provided from your telco, first reboot that device. If that does not resolve the issue, contact your telco, they should be able to see why you are not receiving a response to SABME.