atcomsystems.ca/forum Forums TDM Business Telephone Systems Samsung Telephones & Systems "Plug out" disconnects on PRI OS500

TEPRI(a) cards don't use any Power Unit's (at least not here in AU)
Your only running 96 out of 120 Power units so your not that close to the edge.

I suppose a power supply on its way out could create some noise on the bus and interfere with the TEPRI operation (I have seen some strange things when PSU's are on the way out)

Does the sli not use a SEPU of 16 in Australia?

Um 16x2sli=32
16x5dli=80
8x1svmi=8
Total=120

Here in the states the SLI cards use power and the sepu rating means everything on a loaded system. The TEPRI uses +5 VDC, have you checked the supplemental ground?

I agree a weak suppy could be a big issue. :thumb:

If I remember correctly Samsung told me the "plug out" error was the wrong display for the type of error that happened.I believe they told me it was suppose to say "CO HUNG UP" but I cant recall which version I was working on, but I had the similar problem w/iDCS 100.After weeks of going back and forth w/carrier they brought another circuit from a different CO ,problem went away.Samsung said it was a bug w/that version.Also I did not and never have used a CSU,my boss says they are not necessary if the carrier has their equipment configured correctly.But with out never using a CSU I cant tell you the benefits of using one or not,except that every one says it shows you which way to point the finger.

The 16sli does use 16 SEPU's,
I didn't read the earlier post where the SLI's were mentioned, was going off the post above mine that said 5 x 16dli, tepri, mgi16 and svmi8 hence the 96

Thanks everyone for jumping in on this, the more input the better. As far as CSU's are concerned, we use them when the switch is not in the same room as the smartjack. That way telco can test all the way to the switch. I don't know about the rest of the planet, but here in SoCal carriers have been putting in smartjacks that can be plugged directly into. When that is the case and the switch is in the same room, I plug right in, no csu. I also will remove csu's if I have a troublesome circuit to eliminate a possible cause for trouble, then see if it makes a difference(usually doesn't).

Anyways, haven't had a chance to talk to Samsung yet, been a crazy week. I do have an Adtran ESF csu ace on the way so hopefully I'll be able to put it on the circuit this week. Carrier reported again, no trouble found. I'll update if I get some more info.

My 1st thought is a carrier issue. Have the carrier tech come to the site and plug into the smart jack and pull the history. That will tell you exactly where the problem is. "Plug Out" is the result of sync issues tahat results in a disconnect. Might be the T1 card but most likely the circuit

CHECK THE SERIAL NUMBER OF THE CPU CARD.

We had a customer that was randomly dropping calls on a PRi and Samsung tech support said they had no issues.

Well on calling tech support at our distributor, they told us that there was an issue with the cpu, that a range of cards one part installed backwards. We verified that we could or could not see the printing on the part they identified and replaced the cpu with another card. Problem solved.

Then a month or two later samsung released a tech bulletin saying that all 500 cpu within such and such a range were defective if used with a PRi.

Ours initially worked for about five months and then started dropping calls.

If you have access, you can go back to samsung tech bulletins and find the serial number range and see if it is included. samsung didn't even tell the distributors and we got our card not suspecting anything and making multiple service calls.

Your problem could still relate back to the power supplies we have had heaps of power supply issues in Australia, if you take the power suppy out of the system and have a look at the two fat capacitors, if the top of these capacitors is starting to swell out at the top, these are on there way out, once these power supplies start to fail you will get heaps of errors that are totaly unexplainable, you can swap units over and the fault may move to over componets which may prove its a power supply issue, You will find if the capacitors have gone that there is a few over componets that have failed also so its not worth just changing those two capacitors, send back to your distributor for an exchange service.

Regards

Robert (ps we keep heaps of these in stock)

Sorry I've taken so long to check back in with this one, and thanks for the replies everyone. Ended up going out there with an older Adtran ESF CSU ace in hand, and to meet with the Carrier(Telepacific) on site. Sure enough, Telepacific tech plugs in his sunset and immediately sees errors coming from the CO side. Walk over to the mpoe, plug directely in to the smartjack, same errors. Since Verison brings it from Telepacific to the site, he turns it over to them. Been quiet over there for a couple weeks now, we'll see.

Just so you guys know, the Adtran turned out to be a good option in this situation as I left it plugged in after the Telepacific tech left and it immediately started registering the errors coming from the CO. About one every 10 to 20 SECONDS. Picked it up off Ebay for around 60 bucks. Brand new ones are very expensive, plus I prefer how the old ones wall mount and you can still see the screen.

Rowlettdon, I spoke with Samsung about the "plug out" message and they confirmed it is just an error in software, should say "co hung up" instead. Think they fixed it with 2.76a.

Bunny, that's one of the first things we did as I'm familiar with the backwards chip issue, although my understanding was it only caused a problem with ip networked switches, I might be wrong there. The fix is just to remove the chip from the board and then its fine. Had to do this on one of my networked OS500's and it did fix the problem. Anyway, that chip has been completely removed on later MCP2's which is what they had.

csi.orange, thanks for the heads up on the power supplies. I'll be keeping an eye on that.