Tie line opt61 rls 24 digital em b ch siginiling nt5d12

[chrislxx]

Hi

I am trying to create a tieline that is not PRI but T1 e&m (a-b-bit ) signiling.

I have been trying to configure a nt5d12 with no luck.

any advice?

Chris

 

[johnpoole]

that card will work except in the 11 of course. what problem are you having?

john poole
bellsouth business
columbia,sc

 

[chrislxx]

I have tried so many configurations, but i get an error message somthing like "loop overload" when i try to inable in LD60.

When i disable in LD 60, somtimes it will give ERR 20 over and over until the switch locks up.

Tried a new NT5D12 as well as swaping with an existing card, and that card seems to be fine.

I have been reading the manuals for days and can find anything.

I have nbot done a D4 (a-b bit) type signaling trunk in an opt61 in many years, and never with this card. I have lots of PRI bot none of these.

I hope this gives you more information.

Chris

 

[chrislxx]

Please see below for further information.

At the bottom is what happens when i enable the loop.

Thanks again

Chris




A SAMPLE TRUNK (Ld14)


TN 028 24
TYPE TIE
CUST 0
TRK DTI
PDCA 1
PCML MU
NCOS 4
RTMB 28 24
A/B BIT SIGNALING
TGAR 1
SIGL EM4
STRI/STRO IMM IMM
SUPN YES
AST NO
IAPG 0
CLS CTD DIP CND ECD WTA LPR APN THFD HKD
P10 VNL MID
TKID
DATE NO DATE


NACT

Rdb (LD16)

REQ: PRT
TYPE: RDB
CUST 0
ROUT 28

TYPE RDB
CUST 00
ROUT 28
DES KRQB
TKTP TIE
ESN NO
CNVT NO
SAT NO
RCLS EXT
DTRK YES
DGTP DTI
ISDN NO
DSEL 3VCE
PTYP DTT
AUTO NO
DNIS NO
ICOG IAO
SRCH LIN
TRMB YES
STEP
ACOD 6028
TARG 01
CLEN 1
BILN NO
OABS
INST
ANTK
SIGO STD
STYP SDAT
TIMR ICF 512
OGF 512
EOD 13952
DSI 34944
NRD 10112
DDL 70
ODT 4096
RGV 640
GRD 896
SFB 3
TFD 0
SST 5 0
NEDC ORG
FEDC ORG
CPDC NO
DLTN NO
HOLD 02 02 40
SEIZ 02 02
SVFL 02 02
DRNG NO
CDR NO
MUS NO
MANO NO
EQAR NO
OHQ NO
OHQT 00
CBQ NO
AUTH NO
OHTD NO
PLEV 2
ALRM NO
ART 0
SGRP 0
AACR NO

REQ:

Here is when I enable the loop in LD 60

LD60
OVL013
> LD 60
DTI000
.ENLL 28

PRI000 28 15

PRI000 28 15

DTA003 28

PRI000 28 15

TIM198 16:51 0/0/0 CPU 1

ERR020 28 0 2

ERR020 28 0 2

ERR020 28 0 3

ERR020 28 0 3

ERR020 28 0 4

ERR020 28 0 4

ERR020 28 0 6

ERR020 28 0 6

ERR020 28 0 3

ERR020 28 0 3

ERR5512 28 ERR020 BLOCKING ON

DTA023 28

FHW003 28 LOOP OVERLOAD

ERR5513 28 ERR020 BLOCKING OFF

OK
.STAT 28

PRI* TRK LOOP 28 - ENBL
FAULTY HW: OVERLOAD
FFMT/LCMT/YALMT: ESF/B8Z/FDL
SERVICE RESTORE: YES
YEL ALM PROCESS: YES
ALARM STATUS : NO ALARM
CH 01 - UNEQ CH 02 - UNEQ
CH 03 - UNEQ CH 04 - UNEQ
CH 05 - UNEQ CH 06 - UNEQ
CH 07 - UNEQ CH 08 - UNEQ
CH 09 - UNEQ CH 10 - UNEQ
CH 11 - UNEQ CH 12 - UNEQ
CH 13 - UNEQ CH 14 - MBSY TIE 3VCE
CH 15 - MBSY TIE 3VCE CH 16 - MBSY TIE 3VCE
CH 17 - MBSY TIE 3VCE CH 18 - MBSY TIE 3VCE
CH 19 - MBSY TIE 3VCE CH 20 - MBSY TIE 3VCE
CH 21 - MBSY TIE 3VCE CH 22 - MBSY TIE 3VCE
CH 23 - MBSY TIE 3VCE CH 24 - MBSY TIE 3VCE
.

 

[chrislxx]

If i stat in ld 30 i get the following.

.STAT 28
PRI TRK LOOP
FAULTY HW: OVERLOAD
00 DSBL 30 BUSY NPR301
.

I have replaced with a new NT5D12 as well as swaped with working cards.

I doubt the card is bad but i must have a bad configuration.

Chris

 

[johnpoole]

bad card, bad cable.. not a soft issue.. have you tried it without the t1 plugged in? maybe a loopback.. it is in the cequ as a trk and not a pri?

  DLOP  NUM DCH FRM TMDI LCMT YALM TRSH
   TRK  093 24  ESF NO   B8S  FDL  00
        108 24  ESF NO   B8S  FDL  00
   PRI  000 24  ESF NO   B8S  FDL  00
        001 24  ESF NO   B8S  FDL  00
        017 24  ESF NO   B8S  FDL  00
        018 24  ESF NO   B8S  FDL  00
        028 24  ESF NO   B8S  FDL  00
        029 24  ESF NO   B8S  FDL  00
        044 24  ESF NO   B8S  FDL  00
        045 24  ESF NO   B8S  FDL  00
        048 24  ESF NO   B8S  FDL  00
        049 23  ESF NO   B8S  FDL  00
        060 24  ESF NO   B8S  FDL  00
        076 24  ESF NO   B8S  FDL  00
        077 24  ESF NO   B8S  FDL  00

loops 93 and 108 are the only t1s left

john poole
bellsouth business
columbia,sc

 

[johnpoole]

error 20's seem to say it's not in the cequ at all, but since you added trunks it almost has to be..

john poole
bellsouth business
columbia,sc

 

[chrislxx]

The cards are good, tried a new one, swaped it with another working one. The only cable is the cable to the T1.

It actually came up for a little wile, however i disabled it (LD 60 disl 28) and got repeated (anout 30 times) err020 messages and then the switch locked up.

It dose the same with any card. All cards work fine in Loop 18/19

Now this is over my head, but is there any common cards that could have an effect?

Chris

 

[acewarlock]

SIGL EM4 Can you do this on a T1?

Why change the engine if all you need is to change the spark plugs.

 

[djwht]

you don't want a PRI, but why did you built it as PRI?

your dlop is saying you built it as PRI

.STAT 28

PRI* TRK LOOP 28 - ENBL

 

[bigindian65]

What's an LTM in ld 21 show for route 28?

 

[chrislxx]

Hi

here is the LTM from LD 21

>LD 21
PT1000

REQ: LTM
CUST 0
ROUT 28

TYPE TLS
TKTP TIE
ROUT 28
DES KRQB
TN 028 14 MBER 14 KQRB
TN 028 15 MBER 15 KQRB
TN 028 16 MBER 16 KQRB
TN 028 17 MBER 17 KQRB
TN 028 18 MBER 18 KQRB
TN 028 19 MBER 19 KQRB
TN 028 20 MBER 20 KQRB
TN 028 21 MBER 21 KQRB
TN 028 22 MBER 22 KQRB
TN 028 23 MBER 23 KQRB
TN 028 24 MBER 24 KQRB

REQ:

 

[chrislxx]

I rebuilt it as a TRK, however i no longer get the a - b bit signing message on the LD14 trunks, and i get the same errors.

Please see below.

Thanks

Chris

LD60

OVL013
> LD 60

DTI000
.ENLL 28


PRI000 28 15

PRI000 28 15

DTA003 28

PRI000 28 15

TIM198 16:51 0/0/0 CPU 1

ERR020 28 0 2

ERR020 28 0 2

ERR020 28 0 3

ERR020 28 0 3

ERR020 28 0 4

ERR020 28 0 4

ERR020 28 0 6

ERR020 28 0 6

ERR020 28 0 3

ERR020 28 0 3

ERR5512 28 ERR020 BLOCKING ON

DTA023 28

FHW003 28 LOOP OVERLOAD

ERR5513 28 ERR020 BLOCKING OFF

OK
.STAT 28


PRI* TRK LOOP 28 - ENBL
FAULTY HW: OVERLOAD
FFMT/LCMT/YALMT: ESF/B8Z/FDL
SERVICE RESTORE: YES
YEL ALM PROCESS: YES
ALARM STATUS : NO ALARM
CH 01 - UNEQ CH 02 - UNEQ
CH 03 - UNEQ CH 04 - UNEQ
CH 05 - UNEQ CH 06 - UNEQ
CH 07 - UNEQ CH 08 - UNEQ
CH 09 - UNEQ CH 10 - UNEQ
CH 11 - UNEQ CH 12 - UNEQ
CH 13 - UNEQ CH 14 - MBSY TIE 3VCE
CH 15 - MBSY TIE 3VCE CH 16 - MBSY TIE 3VCE
CH 17 - MBSY TIE 3VCE CH 18 - MBSY TIE 3VCE
CH 19 - MBSY TIE 3VCE CH 20 - MBSY TIE 3VCE
CH 21 - MBSY TIE 3VCE CH 22 - MBSY TIE 3VCE
CH 23 - MBSY TIE 3VCE CH 24 - MBSY TIE 3VCE
.

>LD 32
NPR000
.STAT 28
DTI TRK LOOP
FAULTY HW: OVERLOAD
00 DSBL 30 BUSY NPR301

 

[johnpoole]

and post the cequ for that loop. the only cable is the pri?.. that card requires a cable between the faceplate and the rear of the switch.. i would unplug everything from the faceplate and try to bring it up. the connector on the faceplate that looks like a pri connection could be a clock imput... someone correct me if i'm thinking of the wronge card

john poole
bellsouth business
columbia,sc

 

[chrislxx]

The cable is the T1 cable.

The problem was very obscure; I utilize unused channels on T1's that are used to carry broadcast audio. I use a drop and insert to take the unused channels to the PBX.

In this case I used a different piece of equipment to accomplish this task as the broadcast gear claimed to do the drop and insert now.

My initial checks showed that it did as I only checked the channels I was to use.

The unused channels should have been idle by the drop and insert equipment, but they where not.

They contained data that the switch could not understand.

When I would enable or disable the LOOP the PBX seemed to test the card or the T1 or both and thought that the card was bad due to the extra data on the un-programmed channels.

It was shocking to see that a T1 error would bring the switch down.

Thanks to everyone for their help in this matter.

Chris

 

[johnpoole]

i've seen simular.. so you were hitting those unused channels with ?.. don't take offense with my post, we have people posting here with almost zero hardware exp.. my 1st thought is to bring one up to a loop back.. i never assume it's not the ckt.. it's usually the one thing i didn't program... 20 years ago i had a single bad digital card bring down a nortel.. tech support at the time said it was impossible.. i also had a bad analog card bring down a loop last year.. you had to be getting something all the way to the common bus OR broadcast flood blocked normal switch operations

john poole
bellsouth business
columbia,sc

 

[chrislxx]

i use the first 14 channels of the T1 as follows, 1-9 are a broadscat quality audio, this utilises 64k clear channel, and all 9 channels to get 20 KHZ audio and as you know the ABCD bits are bit robed from the 64K, thus they ehere toggeling on and off constantly at a very high rate.

The next four are bit robbed E&M so they had no effect.

The facility tested good as all other services worked.

I connected a DATS test set and simulated calls to the other switch and was able to process calls normaly on all trunks. As there was no BVP or crc6 errors, i assumed the T1 was good.

I by accedent set the DATS test set to ch 1 and saw the data, thus my clue.

I disabled the broadcast circut in the direction twards the PBX and the problem wenr away.

So now i have to deal with the vendor of the Broadcast equiptment this week.

Thanks again.

Chris

I have another issue for a new thread.