SINQ dchannel message precedes a disconnect

[CarGoSki]

Hello .


I am tshooting intermittent PRI disconnects and was able to log monitor traces.
I see some messages that I have not seen before.
Looks like Merlin sends a SINQ message to all active bchannels then disconnects each.
Magix R1.5

** 04/18/13 11:36:21 fid: 809 SND PRI msg 0075 SINQ
05 08 02 00 39 75 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:21 fid: 808 SND PRI msg 0075 SINQ
05 08 02 00 38 75 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:21 fid: 805 SND PRI msg 0075 SINQ
05 08 02 89 5E 75 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:21 fid: 806 SND PRI msg 0075 SINQ
05 08 02 89 5D 75 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:22 fid: 805 REC PRI msg 0075 SINQ
05 08 02 09 5E 75 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:22 fid: 805 SND PRI msg 007D STATUS
0C 08 02 89 5E 7D 08 02 81 9E 14 01 0A 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:22 fid: 806 CO initiated disconnect
** 04/18/13 11:36:22 fid: 808 REC PRI msg 0075 SINQ
05 08 02 80 38 75 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:22 fid: 808 SND PRI msg 007D STATUS
0C 08 02 00 38 7D 08 02 81 9E 14 01 0A 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:22 fid: 809 CO initiated disconnect
** 04/18/13 11:36:22 fid: 809 SND PRI msg 005A RCOMP
09 08 02 00 39 5A 08 02 81 D1 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:22 fid: 808 REC PRI msg 007D STATUS
0C 08 02 80 38 7D 08 02 80 9E 14 01 0A 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:22 fid: 805 REC PRI msg 007D STATUS
0C 08 02 09 5E 7D 08 02 80 9E 14 01 0A 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:22 fid: 806 SND PRI msg 005A RCOMP
09 08 02 89 5D 5A 08 02 81 D1 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:52 fid: 808 SND PRI msg 0045 DISC
09 08 02 00 38 45 08 02 80 90 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:52 fid: 808 REC PRI msg 004D REL
05 08 02 80 38 4D 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
** 04/18/13 11:36:52 fid: 808 SND PRI msg 005A RCOMP
05 08 02 00 38 5A 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

 

[CarGoSki]

StatusINQuiry

Decoded the file.

Looks like merlin sent an inquiry to the CO since it detected an issue then merlin received a CO Disconnect for each active line?


** 04/18/13 11:36:14 fid: 805 SND PRI msg 0007 CONN
Prot Disc: 8 Dest crv: 2398
CONNect
** 04/18/13 11:36:15 fid: 805 REC PRI msg 000F CACK
Prot Disc: 8 Orig crv: 2398
CONNect ACKnowledge
** 04/18/13 11:36:21 fid: 809 SND PRI msg 0075 SINQ
Prot Disc: 8 Orig crv: 57
STATUS INQuiry
** 04/18/13 11:36:21 fid: 808 SND PRI msg 0075 SINQ
Prot Disc: 8 Orig crv: 56
STATUS INQuiry
** 04/18/13 11:36:21 fid: 805 SND PRI msg 0075 SINQ
Prot Disc: 8 Dest crv: 2398
STATUS INQuiry
** 04/18/13 11:36:21 fid: 806 SND PRI msg 0075 SINQ
Prot Disc: 8 Dest crv: 2397
STATUS INQuiry
** 04/18/13 11:36:22 fid: 805 REC PRI msg 0075 SINQ
Prot Disc: 8 Orig crv: 2398
STATUS INQuiry
** 04/18/13 11:36:22 fid: 805 SND PRI msg 007D STATUS
Prot Disc: 8 Dest crv: 2398
STATUS
IE: 08 Cause
Cod. Std: CCITT
Location: Prvt Ntwk Srvng Loc Usr
Class: Normal - Resp to STAT ENQ
IE: 14 Call State
U10 Active
** 04/18/13 11:36:22 fid: 806 CO initiated disconnect
** 04/18/13 11:36:22 fid: 808 REC PRI msg 0075 SINQ
Prot Disc: 8 Dest crv: 56
STATUS INQuiry
** 04/18/13 11:36:22 fid: 808 SND PRI msg 007D STATUS
Prot Disc: 8 Orig crv: 56
STATUS
IE: 08 Cause
Cod. Std: CCITT
Location: Prvt Ntwk Srvng Loc Usr
Class: Normal - Resp to STAT ENQ
IE: 14 Call State
U10 Active
** 04/18/13 11:36:22 fid: 809 CO initiated disconnect
** 04/18/13 11:36:22 fid: 809 SND PRI msg 005A RCOMP
Prot Disc: 8 Orig crv: 57
RELease COMplete
IE: 08 Cause
Cod. Std: CCITT
Location: Prvt Ntwk Srvng Loc Usr
Class: Invalid Msg - Invalid CRV

 

[merlinman]

Have the intermittent disconnects been happening since this was turned up, or did they just start?

http://home.comcast.net/~merlinman

-merlinmansblog.blogspot.com

 

[CarGoSki]

since it was turned up and in fact spans two different providers.

 

[merlinman]

So this is a Private Network between 2 Legends/Magix?

If so, all you should have them provide is a "CLEAR CHANNEL" T1, and the Legend/Magix does it's own thing with that.

http://home.comcast.net/~merlinman

-merlinmansblog.blogspot.com

 

[CarGoSki]

let me restate.

It is a 10 channel PRI from ATT connected to a INA board.
The problem existed when the site had Windstream and the problem appears to still exist with ATT.
I dont have any traces for the windstream failures but I do have these traces for the ATT failure.

sorry for the confusion.

 

[merlinman]

How's the Timing set? - Just grasping at straws here.

http://home.comcast.net/~merlinman

-merlinmansblog.blogspot.com

 

[CarGoSki]

primary loop

 

[merlinman]

By chance, Is channel 24 in the pool?


It's been known to happen.........

http://home.comcast.net/~merlinman

-merlinmansblog.blogspot.com

 

[CarGoSki]

nope.

GENERAL TRUNK INFORMATION


A QCC QCC Extern
A Trk SS/PP RemAccess Pool TlPrfx HldDisc Principal Prty Oper Switch
A 801 1/ 1 No Remote Yes Long 4
A 802 1/ 2 No Remote Yes Long 4
A 803 1/ 3 No Remote Yes Long 4
A 804 1/ 4 No Remote Yes Long 4
A 805 4/ 1 No Remote 70 Yes Long 4
A 806 4/ 2 No Remote 70 Yes Long 4
A 807 4/ 3 No Remote 70 Yes Long 4
A 808 4/ 4 No Remote 70 Yes Long 4
A 809 4/ 5 No Remote 70 Yes Long 4
A 810 4/ 6 No Remote 70 Yes Long 4
A 811 4/ 7 No Remote 70 Yes Long 4
A 812 4/ 8 No Remote 70 Yes Long 4
A 813 4/ 9 No Remote 70 Yes Long 4
A 814 4/10 No Remote 70 Yes Long 4
A 815 4/11 No Remote Yes Long 4
A 816 4/12 No Remote Yes Long 4
A 817 4/13 No Remote Yes Long 4
A 818 4/14 No Remote Yes Long 4
A 819 4/15 No Remote Yes Long 4
A 820 4/16 No Remote Yes Long 4
A 821 4/17 No Remote Yes Long 4
A 822 4/18 No Remote Yes Long 4
A 823 4/19 No Remote Yes Long 4
A 824 4/20 No Remote Yes Long 4
A 825 4/21 No Remote Yes Long 4
A 826 4/22 No Remote Yes Long 4
A 827 4/23 No Remote Yes Long 4
A 828 4/24 No Remote Yes Long 4
A 829 0/ 0 No Remote Yes Long 4
A 830 0/ 0 No Remote Yes Long 4
A 831 0/ 0 No Remote Yes Long 4
A 832 0/ 0 No Remote Yes Long 4

A DS1 SLOT ATTRIBUTES

A Slot Type Format Supp Signal LineComp
A 4 PRI ESF B8ZS DMI-MOS 1

A CSU/DSU ATTRIBUTES

A Slot 4
A CSU: Activated
A Assigned Channels:
A PRI INFORMATION



A Slot 4 Switch: 5ESS

A System: By line

A BchnlGrp #: Slot: TestTelNum: NtwkServ: Incoming Routing:
A 1 4 CallbyCall By Dial Plan

A Channel ID: 10 9 8 7 6 5 4 3 2 1

A Line PhoneNumber NumberToSend
A 805
A 806
A 807
A 808
A 809
A 810
A 811
A 812
A 813
A 814

A Network Selection Table

A Entry Number: 0 1 2 3
A Pattern to Match: 101**** 10***

A Special Service Table

A Entry Number: 0 1 2 3 4 5 6 7
A Pattern to Match: 011 010 01 00 0 1
A Operator: none OP OP OP/P OP none none none
A Type of Number: I I I N N N N N
A Digits to Delete: 0 0 0 0 0 0 0 0

A Call-By-Call Service Table

A Entry Number: 0 1 2 3 4
A Pattern 0: 0
A Pattern 1: 1
A Pattern 2: 2
A Pattern 3: 3
A Pattern 4: 4
A Pattern 5: 5
A Pattern 6: 6
A Pattern 7: 7
A Pattern 8: 8
A Pattern 9: 9
A Call Type: BOTH BOTH BOTH BOTH BOTH
A NtwkServ: No Service
A DeleteDigits: 0 0 0 0 0

A Entry Number: 5 6 7 8 9
A Call Type: BOTH BOTH BOTH BOTH BOTH
A NtwkServ:
A PRI INFORMATION


A DeleteDigits: 0 0 0 0 0

A Dial Plan Routing Table

A Entry Number: 0 1 2 3
A NtwkServ: Any service Any service Any service Any service
A Expected Digits: 4 4 4 4
A Pattern to Match: 9140 2698 2140 2568
A Digits to Delete: 4 4 4 4
A Digits to Add: 2560 770 2560 0

A Entry Number: 4 5 6 7
A NtwkServ: Any service Any service Any service Any service
A Expected Digits: 4 4 4 4
A Pattern to Match: 2578 2387 2431 2493
A Digits to Delete: 4 4 4 4
A Digits to Add: 0 387 431 493

A Entry Number: 8 9 10 11
A NtwkServ: Any service Any service Any service Any service
A Expected Digits: 4 4 4 4
A Pattern to Match: 2597 2133 2005 5368
A Digits to Delete: 4 4 4 4
A Digits to Add: 597 133 1005 133

A Entry Number: 12 13 14 15
A NtwkServ: Any service Any service
A Expected Digits: 4 4 0 0
A Pattern to Match: 8664
A Digits to Delete: 0 0 0 0
A Digits to Add: 2560 2560

 

[Telecomboy]

You may want to try reprogramming the 10 lines for the PRI to the last 10 on the PRI card (818-827 for your lines and corresponding B Channels). I had an issue once where I had the first 8 channels on the PRI card programmed and the PRI would sporadically drop. I tried changing the lines to the last 8 lines on the card as a last ditch effort and the problem went away. Worth a try.

 

[CarGoSki]

yeah I had though about tearing it down and rebuilding. This INA used to be programmed for two data channels and while it is no longer provisioned for the two channels I cant rule that out as the cause. It is telling that the isdn traces decoded show that the central office initiates the disconnect. I did keep track of disconnects in a list but cannot find consistency to say that yes it is always "fill in cause here" that causes the issue.


examined traces and found other disconnects on:
4/18 at 1136 trk 809, 808, 805, 806
806 co initiate disc
809 co initiate disc

4/19 at 1151 trk 805, 808
no co initiate disc

4/19 at 1404 trk 805 SND PRI msg 0075 SINQ
813 co initiate disc

4/22 at 0819 trki 805 SND PRI msg 0075 SINQ
no co disc

4/22 at 1355 trk 811, 805 SND PRI msg 0075 SINQ

4/22 at 1433 trk 812 SND PRI msg 0075 SINQ
813 co initiate disc
814 co initiate disc

4/22 at 1446 trk 809 SND PRI msg 0075 SINQ
809 co initiate disc

4/22 at 1607 trunk 805 SND PRI msg 0075 SINQ
805 co initiate disc

4/23 at 1014 trk 806, 807 SND PRI msg 0075 SINQ
806 co initiate disc
807 co initiate disc

4/23 at 1357 trk 812 SND PRI msg 0075 SINQ
812 co initiate disc