Failure to communicate. Telepacific Adtran putting out a partial PRI, 1st 8 channels and a "D" channel on 24. The circuit is good to the T-Berd, can make calls out on it.

The L2 LED does not come on and Telepacific people in the switch cannot see the "D" channel. Double and triple and quadruple checked programming, everything looks normal, can pull up a trunk, dial but the call never goes anywhere because the switch doesn't see the "D" channel.

Any great ideas?

What slot is the Tepri card in?
Single or double cabinet?
Lastest software on the card?

What kind of system is it? I had a similar problem happen to me, the problem that I had was that the dip switches on the PRI card was not in the correct positions. I was working on a os7100. Hope that helps/

It is in a 7200, cabinet 1 slot 5 and set to clock off that cabinet/card position.

There is an expansion cabinet with just the voicemail. Main cabinet has 16 dil, 16 dli, combo trunk, MGI and TEPRIa.

System was installed in March but they found out they had a contract with their old dial tone vendor and it just expired, too expensive to buy out.

There are only two jumpers on the card (still at factory default), none on the top of the card as it shows in the most current manual I can find.

The card has a set of six LEDs on the top row of LEDs, not two sets of four as shown in the manual but the LED labels correspond to documentation.

The L2 LED won't light and Telepacific can't see the "D"channel. Grab any of the 8 trunks, get dial tone, dial a number and it won't go through and TP can't see any "D" channel info on their switch.

I've never once had a defective T-1 card on the DCS and never a defective TEPRI card on a 100 or 500 so it is hard to suspect the card but I don't know where else to go.

The TEPRIa card has been reseated three times, shows up in 806, has been restarted multiple times both in software and power down/power up.

Try it out in slot 3. I seem to recall that when I once had one in slot 5 that I had that problem. If that fails what is the software level on both systems. You might want to get everything to the latest and greatest (sort of) software level.

The Tepri card can go in slots 3,4 & 5 of the main cabinet but as Telcom say's I too would recommend slot 3, being the first clocking slot.

Bunnie - a good start would be to go to the Samsung website and download 4.22 and the last PRI SW just posted in the last couple days. We have yet to see a bad PRI card (7000 series).

One of the four pins makes no sense. USER/NETWORK -- and you want USER. When I think network, I think telco.

Do you like how small the dip/pins are? - and covered with that film to boot??? 1.0 reading glasses + magnifying glass + LED light

Also- plug in a loopback 1,2_4,5 - and see if the card syncs up with clock source, L2.

Thank you so much for the loopback idea, I think 1 goes to 5 and 2 goes to 4, yes???

We could only find two jumpers. This is a TEPRIa card and it has a top row off six LEDs where the last pix available in the manual have two rows of four LEDs. There are no jumpers where the photo shows jumpers.

If anyone has an install sheet of the new TEPRIa card with the row of 6 LEDs on top, could you please contact me or send an email with a .pdf?

Thanks, I will try the loopback ASAP.

Pin 1 and 2 are on, 3 and 4 are off. I believe this is the way the card is out of the box. These are the only jumpers/changes that should be made on the card.

We also always use an Adtran CSU ace between the telco NIU and PRI card if the telco/carrier is not providing any type of CSU/DSU. I know that is not always done, but it is handy to be able to have the customer look at the NET/EQUIP led LOS lights and/or flip a switch to provide a loopback. They are cheap.

Thanks for the sheet info Noisycow, but unfortunately that is the old sheet we have.

There are NO dip switches on this TEPRIa card, only a J1 and J2, nothing else. Both the IT guy and I have gone over the card with our noses an inch away and glasses on and there are no dip switches on this 7000 series card.

As we don't have a re-cut scheduled, the card was sent back to the distributor who has kindly agreed to put it in their system to test.

One thing TP did say is that they could put in a different model Adtran but they wanted $250 to reconfigure it. I could get a call to my cell phone from the Adtran using a T-Berd but that doesn't mean something wasn't incompatible with the "D" channel and the new style TEPRIa card.

You would think that TelePacific and other carriers would keep a database of successful cuts where specs would be kept that this model Adtran worked with this model Samsung and this model Adtran DID NOT work with this model Samsung, same with Toshiba, Nortel, etc.

I usually use an Adtran Ace on a full circuit but in this case it would be selling an Adtran Ace to monitor an Adtran PRI box and I couldn't justify that.

Thanks, sooner or later we will get this puppy up.

Have you tried a T-1 crossover cable?

Good catch on that one bmreen.

I am confused Bunnie. The latest and greatest TEPRIa cards have those TINY dip settings. I've configured four myself in the last week. I am unaware of any current TEPRIa card for the 7000 series that does not have those eight dip switches. They are hard to see - very tiny. So tiny I use TWO reading glasses to set the damn things!!!

T-1 crossover - one of my pet peeves!! Why can't they just make interfaces for a straight cat5 patch cord that is handy at every site? Just dumb.

If when you plug in the cable you see the lights change such as the ref clock, but not a D-channel it is not the cable. If the cable is pinned wrong you typically will see no change.

We did try a cross over cable and that didn't help.

But the situation is solved. We sent the card back and no, it is not defective. The distributor's tech informed us that there is a plastic cover and the dip switches are itsy-bitsy.

An IT guy of at least 40 years experience, me, my partner and the Telepacific guy all looked for the dip switches and none of us could find them.

The manual said they were there but we couldn't find them. Thanks for saying they are TINY Noisycow, they are so well hidden we had to conclude we had a newer card. I mean I want to see those dip switches, if four experienced techs can't find them with a manual, I say revise the manual.

Thank you everyone for your help, I'm not usually stumped but having TINY dip switches covered by plastic is not what I would have suspected.

And speaking of crossover cables Noisycow, I just moved a Norstar MICS and the previous CLEC required a T-1 crossover cable for the PRI and Verizon required a straight through, now how do you figure that?

Great to hear Bunnie! Yeah not only are they TINY, they have a plastic coating over them. That makes it hard to see how they are set. I miss the old days where the dip/pins were big and right on the front of the card.

The good news is we have never seen a bad card - it is always something configured wrong.

People shouldn't confuse a T-1 crossover cable with an ethernet crossover cable. When we make T-1 crossover cables we put black electric tape around each end to make it obvious.

Bunny for your info I have never had to change those dip switches for a PRI circuit. Only when using a T-1.

Telcom - we have received two cards with the dips changed to something different, even with the plastic coating undisturbed, so it is always worth checking.

Just fire it up with the card installed, go into the number plan 7XX and see if it thinks it is a PRI23 or T124. My lazy way of finding out for sure without getting out the double reading glasses!

We've had TEPRIa cards before for the 7100 and never had a problem. This was a 7200 install and I have never seen dip switches this small in my life.

We had a print that talked about the dipswitches and the Telepacific guy, the really smart on site IT guy, Paige and I all looked for the dip switches and NONE of us found them.

When we read about the dip switches being tiny and covered with plastic we realized how we missed them.

Is there some reason they would be covered with plastic? I can understand Korea would put in tiny, tiny dip switches to save money, but to cover them with plastic? It is not like you would spill Coke into the board inside the system.

And our distributor for sure verified that the setting was incorrect when we got the card. We couldn't even find them to change them to the wrong setting.

Hopefully this thread will help other people in the future if they have no D channel as we did.

(Or rather didn't have.)

Just saw this post, wished I would have got in sooner... I had the exact same problem on my 7400 system on a TEPRI2 card, the dip switches are coated with dark coated plastic (not sure why, dust should not affect the switch), after I finally found them, configured them properly and my D channel started working.

Jimmy

Plastic tape over PCB mounted switches is usually to protect the switch during the manufacturing process.

As the switches are not supposed to be all-on or all-off I would expect the tape to be removed and the switches set later in manufacturing. Alternatively, they could be ordered in preset to the appropriate positions.

Sounds like a glich in Samsungs manufacturing / QA processes if they are being shipped with settings different to those in the documentation.