Option 11 PRI Channels some channels LCKO out every few days

[Sccoppa]

Hi,
I have an old option 11 serving polling purposes only:

REQ ISSP
VERSION 1411
RELEASE 20
ISSUE 19 +
IN-SERVICE PATCHES : 2
PAT# PRS AUTH ID NAME DATE
001 BV31450 00 0000 LD49IDC 04 /01
002 BV40641 00 0000 MMAIL 04 /01

There are 5 PRI cards (cards 3-7) supporting T1 service

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

PRI* TRK LOOP 4 - ENBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL
SERVICE RESTORE: YES
YEL ALM PROCESS: YES
ALARM STATUS : NO ALARM
CH 01 - IDLE ISA CH 02 - IDLE ISA
CH 03 - IDLE ISA CH 04 - IDLE ISA
CH 05 - IDLE ISA CH 06 - IDLE ISA
CH 07 - IDLE ISA CH 08 - IDLE ISA
CH 09 - IDLE ISA CH 10 - IDLE ISA
CH 11 - IDLE ISA CH 12 - IDLE ISA
CH 13 - IDLE ISA CH 14 - IDLE ISA
CH 15 - IDLE ISA CH 16 - IDLE ISA
CH 17 - IDLE ISA CH 18 - IDLE ISA
CH 19 - IDLE ISA CH 20 - IDLE ISA
CH 21 - IDLE ISA CH 22 - IDLE ISA
CH 23 - IDLE ISA CH 24 - DCH 14

PRI* TRK LOOP 5 - ENBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL
SERVICE RESTORE: YES
YEL ALM PROCESS: YES
ALARM STATUS : NO ALARM
CH 01 - IDLE ISA CH 02 - IDLE ISA
CH 03 - IDLE ISA CH 04 - IDLE ISA
CH 05 - IDLE ISA CH 06 - IDLE ISA
CH 07 - IDLE ISA CH 08 - IDLE ISA
CH 09 - IDLE ISA CH 10 - IDLE ISA
CH 11 - IDLE ISA CH 12 - IDLE ISA
CH 13 - IDLE ISA CH 14 - IDLE ISA
CH 15 - IDLE ISA CH 16 - IDLE ISA
CH 17 - IDLE ISA CH 18 - IDLE ISA
CH 19 - IDLE ISA CH 20 - IDLE ISA
CH 21 - IDLE ISA CH 22 - IDLE ISA
CH 23 - IDLE ISA CH 24 - BKUP DCH 15

PRI* TRK LOOP 6 - DSBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL
PRI* TRK LOOP 7 - DSBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL

Cards 6 & 7 I have disabled as indicated by our telco when the cards tried to connect to the CO - as we have more than enough capacity with the remaining 3.

Card 3-5 are running, but almost every other day a few channels switch into LCKO status - on card 3 and/or 5.

I am able to DSCH and ENCH the channels to bring them back to IDLE status.

Anyone have any ideas why this might be happeneing.

Cards 3 supports dialing out by 9. (Hence 1 DCH here)

Cards 4 & 5 supports dialing out by 8 (Hence two DCHs here)

Alternatively, anyone have any ideas on what we could use to replace this Option 11. Effectively, we need to be able to connect our T1's to a unit that will provide 60 analog modem lines. We tested out a Cisco 5300 unit, but the analog ports created toO many polling errors and prolonged polling activities by 5 times.

All suggestions welcomed.

Thanks

 

[kodr]

What type of office are you connecting to (DMS,Lucent...)?

 

[GHTROUT]

I've always found that to be the carrier causing the problem.

I suppose one idea: If you know no call on any of these PRIs should exceed some maximum duration, then set the Routes TFD timer and see of that helps any.

You mentioned it was for polling only, so I suspect all calls are short? The TFD timer forces the disconnect of a call from 1 to 3600 seconds (1 second to one hour). TFD 0 means no time limit.

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[johnpoole]

check your clocking as well as your lcnt table.. start type/supervision/ndec/fdec can all cause that problem not to mention timers..

john poole
bellsouth business
columbia,sc

 

[Sccoppa]

The switch connects to a DMS. Calls vary. Majority are less than 10 mins.

Below is the Ld 60 STAT and LCNT for today:

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

PRI* TRK LOOP 4 - ENBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL
SERVICE RESTORE: YES
YEL ALM PROCESS: YES
ALARM STATUS : NO ALARM
CH 01 - IDLE ISA CH 02 - IDLE ISA
CH 03 - IDLE ISA CH 04 - IDLE ISA
CH 05 - IDLE ISA CH 06 - IDLE ISA
CH 07 - IDLE ISA CH 08 - IDLE ISA
CH 09 - IDLE ISA CH 10 - IDLE ISA
CH 11 - IDLE ISA CH 12 - IDLE ISA
CH 13 - IDLE ISA CH 14 - IDLE ISA
CH 15 - IDLE ISA CH 16 - IDLE ISA
CH 17 - IDLE ISA CH 18 - IDLE ISA
CH 19 - IDLE ISA CH 20 - IDLE ISA
CH 21 - IDLE ISA CH 22 - IDLE ISA
CH 23 - IDLE ISA CH 24 - DCH 14

PRI* TRK LOOP 5 - ENBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL
SERVICE RESTORE: YES
YEL ALM PROCESS: YES
ALARM STATUS : NO ALARM
CH 01 - IDLE ISA CH 02 - IDLE ISA
CH 03 - IDLE ISA CH 04 - IDLE ISA
CH 05 - IDLE ISA CH 06 - IDLE ISA
CH 07 - IDLE ISA CH 08 - IDLE ISA
CH 09 - IDLE ISA CH 10 - IDLE ISA
CH 11 - IDLE ISA CH 12 - IDLE ISA
CH 13 - IDLE ISA CH 14 - IDLE ISA
CH 15 - IDLE ISA CH 16 - IDLE ISA
CH 17 - IDLE ISA CH 18 - IDLE ISA
CH 19 - IDLE ISA CH 20 - BUSY ISA
CH 21 - BUSY ISA CH 22 - LCKO ISA
CH 23 - LCKO ISA CH 24 - BKUP DCH 15

PRI* TRK LOOP 6 - DSBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL
PRI* TRK LOOP 7 - DSBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL
.LCNT

PRI TRK LOOP 3
TRSH CNT:
BPV -000
SLIPD -000
SLIPR -000
CRC -000
LOSFA -034
OS_BPV -000
OS_LOSFA-000
OS_YEL -000


PRI TRK LOOP 4
TRSH CNT:
BPV -000
SLIPD -000
SLIPR -000
CRC -000
LOSFA -002
OS_BPV -000
OS_LOSFA-000
OS_YEL -000


PRI TRK LOOP 5
TRSH CNT:
BPV -000
SLIPD -001
SLIPR -000
CRC -000
LOSFA -004
OS_BPV -000
OS_LOSFA-001
OS_YEL -000


PRI TRK LOOP 6
TRSH CNT:
BPV -000
SLIPD -000
SLIPR -000
CRC -000
LOSFA -000
OS_BPV -000
OS_LOSFA-000
OS_YEL -000


PRI TRK LOOP 7
TRSH CNT:
BPV -000
SLIPD -000
SLIPR -000
CRC -000
LOSFA -000
OS_BPV -000
OS_LOSFA-000
OS_YEL -000

I'll look into the TFD setting, but I am pretty sure it would set to 0.

How do I check the clocking?

Thanks

 

[bhassell2000]

in LD 60 type ssck 0 and it should show what slot you clocking is lockrd on to

Thanks,

Buddy

Linked in Profile

http://www.linkedin.com/pub/buddy-hassell/7/5a5/b8b

 

[johnpoole]

clocks are built in 73.. you want to clock off of your most reliable pri.. slips are usually a clocking problem.. that rdb has to be set to clock ext.. you do not want tfd, that disconnects the trunks during the call.. it's good for timed calls ie pageing trunks

john poole
bellsouth business
columbia,sc

 

[Sccoppa]

This is the LD 60 SSCK 0 response:

.SSCK 0
ENBL
CLOCK ACTIVE
SYSTEM CLOCK - LOCKED TO SLOT 3
PREF - 3
SREF - 4
AUTO SWREF CLK - ENBL
NO ERROR

Thanks

 

[Triton101]

I've seen that when connections stay up past 24hrs, sometimes they get locked out from the CO. Are these analog modems hanging up properly? You could be having an issue with the devices causing the lockout.....

__________________________________________________________
Find a job you love and you'll never work a day in your life. - Confucius

 

[Sccoppa]

Good point. That has happened a few years ago according to a coworker. I'll see what was done.