PRI Appears to have gone down ... 1

[JustShady]

Hi all and Happy New Year,

As a perfect start for the new year, when I came in this morning I was told that no one was able to call in to our switch. I looked at the DTI/PRI card in slot 1 (Option 11c) and noticed that the "RED" light was lit. I disconnected and reconnected the PRI and a minute later everything was back to normal. As this is my first problem of this kind on the Option 11, I just wanted to make sure things are back to normal. What else should I check?

When I stat LD 60 this is what is returned:

PRI* TRK LOOP 1 - ENBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL
TRACKING
SERVICE RESTORE: YES
YEL ALM PROCESS: YES
ALARM STATUS : NO ALARM
CH 01 - BUSY DID 3VCE * CH 02 - BUSY DID 3VCE *
CH 03 - BUSY DID 3VCE * CH 04 - BUSY DID 3VCE *
CH 05 - BUSY DID 3VCE * CH 06 - BUSY DID 3VCE *
CH 07 - IDLE DID 3VCE * CH 08 - IDLE DID 3VCE *
CH 09 - IDLE DID 3VCE * CH 10 - IDLE DID 3VCE *
CH 11 - IDLE DID 3VCE * CH 12 - IDLE DID 3VCE *
CH 13 - IDLE DID 3VCE * CH 14 - IDLE DID 3VCE *
CH 15 - IDLE DID 3VCE * CH 16 - IDLE DID 3VCE *
CH 17 - IDLE DID 3VCE * CH 18 - IDLE DID 3VCE *
CH 19 - IDLE DID 3VCE * CH 20 - IDLE DID 3VCE *
CH 21 - IDLE DID 3VCE * CH 22 - BUSY DID 3VCE *
CH 23 - BUSY DID 3VCE * CH 24 - DCH 11

When I LCNT in ld 60 I see this:

PRI TRK LOOP 1
TRSH CNT:
BPV -031
SLIPD -000
SLIPR -000
CRC -000
LOSFA -009
OS_BPV -000
OS_LOSFA-000
OS_YEL -002

Problems were so much easier on the Nostar. Thanks for all of the help I receive on this board, it is so much appreciated.

Scott

 

[NortelGuy1979]

You could also go into LD96 and:
. STAT DCH
or
. STAT DCH 11
to make sure the Dchannel is up; but the loop itself looks up from your print of LD60. -Matt

Matt H.
TMC - KCMO, USA

 

[coniglio]

also reset your counters in LD 60.

.RCNT
return

that will reset them all to zeroes.

 

[JustShady]

THANKS heavnema and coniglio. Everything seems stable.

Was it just a fuke that disconnecting the PRI and reconnecting to the DTI.CTI allowed the DTI/CTI to reset or did the PRI just happen to come on line? On the Norstar system the T1 card had a recycle button. Is there a way to recycle the DTI/CTI? Or is this even necessary on an Option 11c?

Thanks again guys.

Scott

 

[NortelGuy1979]

Why it went down is a loaded question! You could call your LEC and have them pull span stats on the T1 that your PRI rides; or you could just let it ride (no pun intended) and wait for next time. I will leave the question as to what is best to prevent this and/or recycle it next time to someone else - I don't know as much about DTI/PRI as I should... -Matt

Matt H.
TMC - KCMO, USA

 

[hawks]

The button on the NORSTAR is a Loop Back button for testing with the CO. When pressed it loops the circuit up for testing then pressed agin brings it back to normal.

 

[johnpoole]

the opt 11 doesn't have a loopback button, you did everything correctly, i would have done a soft cycle, before i did the hard reset, no big difference,

ld 96
dis dch 11 auto

ld 60
disl 1
wait AND wait

enll 1..

the d will come up by itself, and you'll see the est d come across the screen, if you do a stat and have a busy channel, your d's up.. the d is only used in setup and tear down, you can down a d and the calls stay up. fyi.. i would also check the lcnt every hour or so, you took a lot of bi-polar violations, those can be caused between the demark and the switch, bad patch cable, or one that is common, ie a tie cable, so keep an eye on the lcnt's, may be a one time problem, but your the only person that is checking it, the co does not check a voice pri, ever, without a call.. you can unplug it for 10 years and as long as you pay the bill the central office doesn't get an alarm..

john poole
bellsouth business
columbia,sc

 

[NortelGuy1979]

Amen to JP's comments... "but your the only person that is checking it, the co does not check a voice pri, ever, without a call.. you can unplug it for 10 years and as long as you pay the bill the central office doesn't get an alarm.. " -M

Matt H.
TMC - KCMO, USA

 

[johnpoole]

the phone company doesn't have the personal to watch for alarms on that many t's, you can buy mon service, but in most cases they depend on the end users to know if they are having trouble and if the end users want them fixed.. if one of use downs a t or a switch, they assume we know what we are doing and will bring it up when we are ready to use it. i have seem many cases where a t was outed in the switch, and still being paid for years later..

john poole
bellsouth business
columbia,sc

 

[JustShady]

Hello again! It's 01-09 and I'm sitiing in my office waiting to see if SBC will repair what apparently is a wet cable problem to our facility. RAIN! and lots of it here in So Cal and causing cable problems everywhere.

Anyway, the DCH became disabled and I'm assuming that it won't come up again until the BRI comes back up ... True? This all began on Monday the 3rd and I guess was the beginning of a wet faulty cable coming to a head.

When I STAT DCH in LD 96 I get this:

.stat dch
DCH 011 : DSBL RST AUTO DES : 30HCQS001110-001

When I STAT TMDI in LD 96, I get this:

.stat tmdi
TMDI 1: SYS DSBL - RECOVERY THRESHOLD
NO RECOVERY UNTIL MIDNIGHT

When I STAT in LD 60, I get this:

>ld 60
DTI000
.stat

PRI* TRK LOOP 1 - DSBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL

Not having phones at 8:00AM is going to be a nightmare. We only have 4 analogs working for outbound. I am so depressed. : (

Thanks for any consolation.

Scott

 

[JustShady]

Good Morning ... For those on the East Coast, well ... I guess it's about noon.

SBC still hasn't repaired the problem but the PRI came back. I cannot get rid of the "RED" alarm on the dch. In LD 96:

TIM000 09:15 10/1/2005 CPU 0
stat dch
DCH 011 : OPER RLS AUTO DES : 30HCQS001110-001
.

In LD 60:

.stat

PRI* TRK LOOP 1 - ENBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL
SERVICE RESTORE: YES
YEL ALM PROCESS: YES
ALARM STATUS : RED
CH 01 - DSBL DID 3VCE * CH 02 - DSBL DID 3VCE *
CH 03 - DSBL DID 3VCE * CH 04 - DSBL DID 3VCE *
CH 05 - DSBL DID 3VCE * CH 06 - DSBL DID 3VCE *
CH 07 - DSBL DID 3VCE * CH 08 - DSBL DID 3VCE *
CH 09 - DSBL DID 3VCE * CH 10 - DSBL DID 3VCE *
CH 11 - DSBL DID 3VCE * CH 12 - DSBL DID 3VCE *
CH 13 - DSBL DID 3VCE * CH 14 - DSBL DID 3VCE *
CH 15 - DSBL DID 3VCE * CH 16 - DSBL DID 3VCE *
CH 17 - DSBL DID 3VCE * CH 18 - DSBL DID 3VCE *
CH 19 - DSBL DID 3VCE * CH 20 - DSBL DID 3VCE *
CH 21 - DSBL DID 3VCE * CH 22 - DSBL DID 3VCE *
CH 23 - DSBL DID 3VCE * CH 24 - DCH 11

.

I have< dis dch 11 auto> in LD 96 and <disl 1> <enll 1> in LD 60 with the following response in LD 60:

.enll 1

PRI000 1 5

PRI000 1 5

DTA021 1

DTI030 1

.

This is the LCNT in LD 60:

.lcnt

PRI TRK LOOP 1
TRSH CNT:
BPV -001
SLIPD -000
SLIPR -000
CRC -000
LOSFA -002
OS_BPV -000
OS_LOSFA-001
OS_YEL -000

It may be that the PRI is still hinky I'm guessing.

Thanks for all your help,

Scott

 

[johnpoole]

your lcnt is not that bad but the "DTI030 1" should have been at dti021..30 is the code that means the switch can't see the far end, reseat the card


john poole
bellsouth business
columbia,sc

 

[JustShady]

Reseating the card makes me nervous. Is there a procedure for that? ... or do I just pull it out and push it back in?

 

[johnpoole]

after your go through that load 96 ld 60 commands and see the red light on the faceplate.. i never unplugg a card that's not down

john poole
bellsouth business
columbia,sc

 

[janchundia]

Are you sure that the link between both systems are OK?
You need first loopback in the remote site.In the local site, reset the alarm counter (RCNT 1) and check for error (LCNT 1). If you don´t have alarms your PRI will go to UP. Check the alarm for 5 minutes (LCNT 1.
You can send one frame and check for error when the frame return:
LD 96.
.DIS DCH 11
LD 60
.DISL 1
.RMST 1

You can also loopback by software in the local site and check in the remote site for alarm.
LD 96
. DIS DCH 11
LD 60
.DISL 1
.RLBK 1
Your remote site will syncronize and the alarm are cleared.

Also, you can check the clock reference into the system.
LD 60.
.SSCK 0
Is the option 11C Master or slave for clock reference?

Javier

 

[johnpoole]

i wouldn't waste time with a loop back until after a hard reseat, if that don't work do the above test...the link tells you that it is bad, it may be lying..they do that on mondays (lol)

john poole
bellsouth business
columbia,sc

 

[janchundia]

Also check the TX and RX connections.
Is posibble that the provider connect wrong.
TX1 -----> TX2
RX1 -----> RX2

The correct is
TX1 -----> RX2
RX1 -----> TX2

jAVIER

 

[janchundia]

A hard reset is neccesary after if you are sure that the link is OK. Then your first step is ever check your link.

Javier

 

[johnpoole]

we don't agree on the fastest way to get one back up, i have loopback pluggs in my desk, fri i had a t down between an opt 11 and my 81, it didn't come back up on a soft restart, it did on a card reseat, total donwtime was less then 3 minutes, did not need the loopbacks.. i only use one to prove that the trouble is either in house or on the phone companies end...

john poole
bellsouth business
columbia,sc

 

[janchundia]

ok