Not Able to make External Calls, message received "Congestion"

[imukonyezi]

When we try to make external calls out of our system to the PSTN all etensions now reporting with "Congestion". The E1 service providers are saying there is no issue their side as incoming calls are fine. Here is the trace for the external calls

(1)CS1> t3
--> Cleaning mtracer...
--> Positionning t3 filters...
+--------+-------+--------+--------+---------+---------+----------+------+
| filter | desti | src_id | cr_nbr | cpl_nbr | us_term | term_nbr | type |
+--------+-------+--------+--------+---------+---------+----------+------+
| 0 | ** | ** | * | ** | * | *** | 165 |
| 1 | ** | ** | * | ** | * | *** | 166 |
| 2 | ** | ** | * | ** | * | *** | 167 |
| 3 | | | | | | | |
| 4 | | | | | | | |
| 5 | | | | | | | |
| 6 | | | | | | | |
| 7 | | | | | | | |
+--------+-------+--------+--------+---------+---------+----------+------+
Traces Analyser activated

mtracer started ...
(436370:000001:17154) MTRACER host (172.16.5.4, CS1), version: R100.0-n1.291-66-a-ke-c0s1
(436370:000001:17154) MTRACER num: 004, time: 2024/08/05 14:35:09, loss: 0%
______________________________________________________________________________
| (437571:000002:03484) 3484: Send_IO1 (link-nbr=1, sapi=0, tei=0) :
| long: 49 desti: 0 source: 15 cryst: 3 cpl: 4 us: 8 term: 1 type a5
| tei: 0 <<<< message sent : SETUP [05] Call ref : 00 c7
|______________________________________________________________________________
|
| IE:[04] BEARER_CAPABILITY (l=3) 80 90 a3
| IE:[6c] CALLING_NUMBER (l=6) -> 00 81 Num : 2215
| IE:[70] CALLED_NUMBER (l=11) -> 80 Num : 0789236060
| IE:[7d] HLC (l=2) 91 81
| [a1] Sending complete
|______________________________________________________________________________

______________________________________________________________________________
| (437572:000003:03532) Concatenated-Physical-Event :
| long: 23 desti: 0 source: 0 cryst: 3 cpl: 4 us: 0 term: 1 type a5
| tei: 0 >>>> message received : CALL PROC (02) Call ref : 80 c7
|______________________________________________________________________________
|
| IE:[18] CHANNEL (l=3) a9 83 9e -> T2 : B channel 30 exclusive
|______________________________________________________________________________

______________________________________________________________________________
| (437595:000004:03532) Concatenated-Physical-Event :
| long: 26 desti: 0 source: 0 cryst: 3 cpl: 4 us: 0 term: 1 type a5
| tei: 0 >>>> message received : DISCONNECT [45] Call ref : 80 c7
|______________________________________________________________________________
|
| IE:[08] CAUSE (l=6) 82 a9 00 00 00 00 -> [a9] TEMPORARY FAILURE
|______________________________________________________________________________

______________________________________________________________________________
| (437595:000005:03484) 3484: Send_IO1 (link-nbr=1, sapi=0, tei=0) :
| long: 23 desti: 0 source: 15 cryst: 3 cpl: 4 us: 8 term: 1 type a5
| tei: 0 <<<< message sent : RELEASE [4d] Call ref : 00 c7
|______________________________________________________________________________
|
| IE:[08] CAUSE (l=3) 81 e4 08 -> [e4] INVALID INFORMATION ELEMENT CONTENTS
|______________________________________________________________________________

______________________________________________________________________________
| (437598:000006:03532) Concatenated-Physical-Event :
| long: 18 desti: 0 source: 0 cryst: 3 cpl: 4 us: 0 term: 1 type a5
| tei: 0 >>>> message received : REL COMP [5a] Call ref : 80 c7
|______________________________________________________________________________

[alex]

______________________________________________________________________________
| (437595:000004:03532) Concatenated-Physical-Event :
| long: 26 desti: 0 source: 0 cryst: 3 cpl: 4 us: 0 term: 1 type a5
| tei: 0 >>>> message received : DISCONNECT [45] Call ref : 80 c7
|______________________________________________________________________________
|
| IE:[08] CAUSE (l=6) 82 a9 00 00 00 00 -> [a9] TEMPORARY FAILURE
|______________________________________________________________________________

Just wait a bit. It's just a temporary failure.
Could be a problem on another service provider in network but in any case you receive DISCONNECT from your provider so you could create a ticket.

[frank]

You also have

______________________________________________________________________________
| (437595:000004:03532) Concatenated-Physical-Event :
| long: 26 desti: 0 source: 0 cryst: 3 cpl: 4 us: 0 term: 1 type a5
| tei: 0 >>>> message received : DISCONNECT [45] Call ref : 80 c7
|______________________________________________________________________________
|
| IE:[08] CAUSE (l=6) 82 a9 00 00 00 00 -> [a9] TEMPORARY FAILURE
|______________________________________________________________________________

When you decode Information Element, your first octet (82) cause for issue is "No route to specified transit network".
This is coming from your carrier. Therefore it's on their end. You should tell them that the information element message you receive in your isdn trace mention that THEY are telling you there is no route to the transit network.

Your other message here
______________________________________________________________________________
| (437595:000005:03484) 3484: Send_IO1 (link-nbr=1, sapi=0, tei=0) :
| long: 23 desti: 0 source: 15 cryst: 3 cpl: 4 us: 8 term: 1 type a5
| tei: 0 <<<< message sent : RELEASE [4d] Call ref : 00 c7
|______________________________________________________________________________
|
| IE:[08] CAUSE (l=3) 81 e4 08 -> [e4] INVALID INFORMATION ELEMENT CONTENTS
|______________________________________________________________________________

means "Unallocated (unassigned) number.

They dont know how to route that. Probably on their end again.