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Joined: Aug 2007
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I have check with STA Tech Support and they have not had anybody report this issuue with calls disconnecting. They did say that they are looking for the CO's to be between 28-35 Ma. Did you ever get a reading on the CO lines at the job site? Also, How is AT&T delivering the ciruit to your system? Is it some type of VoIP circuit that is being converted on site to an analog CO, or does the line come directly from the CO as analog?

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Joined: May 2004
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Not disconnecting. phantom incoming ringing on all 4 lines at the same time but only intermittenly and once it starts it goes nuts for quite awhile

CO's: they say it's on copper all the way back to the central office.

Readings: I'm going to do that today, but I'm really hoping that I just got a bad 4trm out of the box.

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Update:

I went to the site this afternoon to swap over to the 7100 and wait..

As I mentioned before I had them running on the compact in night service and feeding single line ext's into the co's of the 7100 so when an incoming call came in it also rang in on the 7100 etc.

1)before I swung it over, I checked the 7100 Alarm report and everything was clear: No trunk connect/Disconnect so far a good sign.

2) I check the loop current on their lines.

Line 1 44ma. Line 2 through 4 38ma: Bad sign

So for "fun" I check the Line current on 2 of the analog ports from the compact that I've been feeding into the 7100 as CO's and they read "49ma" which the 7100 seems to be happy as a clam with.

So I announce to the customer that I'm swapping it over and I did...

10 minutes later all 4 co lines on the 7100 light up all at once and once again I scramble to swing it back to the Compact and all is quiet again. also the alarm report showed trunk disconnect/connect.

I immediately get on the phone with samsung Tech support and explain my tale of woe in which they told me and I did:

1) Default the system and reprogram it by hand

I also moved the 4trm to the 2nd slot and the keysets and single lines to the 3rd slot so:
1)MCP 2)trm 3)DLM DLM SLM

I also just returned from radio shack with a multitude of various mishmash of resistors to try on the CO lines. if that works but the volume is low then I guess I buy the Sandman gizmos.

What I planned to do in the morning is to split off the 4 CO's to both go directly into the compact and the 7100, hopefully the 7100 doesn't backfeed the trouble into the compact, if it doesn't then I should be able to troubleshoot without the customer blowing a gasket.

On a personal note, this is about a mile past sucking.

Joined: Mar 2001
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I don't see the possibility of one trunk with hot amperage making all four ring.

I agree that is in the sucking category, but try another test that may sort things out, maybe not.

Parallel each line to both the 7100 and a single line set, preferable an old Bell/AT&T/GTE/Northcom type with a REN of 1.0.

When the 7100 goes nuts, do all four s/l phones ring or only one s/l and the four ports on the 7100?

One more test: With the lines unplugged from any equipment, put a tone generator on line one and using a buttset with the speaker on high, climb on line two, then line three, then line four. See if you hear a bleed through on any of them, if so there is not sufficient isolation from the Telco side.

Repeat this test with the tone on line two and the buttset on line three and then line four.

Repeat this test with the tone on line three and the buttset on line four.

If no bleed through on any combination, you have good isolation from the Telco and put that possibility to rest.

Does this craziness start only when line one rings? You could short out line one and see if the 7100 remains calm with line two, three or four ringing. That would sort it down to line one only.

One last test, reverse the order, put line four into line one position, line three in line two position. This may be meaningless if you have swapped the 4TRM but they then could have both come from the same mfg. batch.

Remember that when the guy said, "Cheer up, things could be worse." He cheered up and sure enough things got worse.


THE Bracha, old blond specialist in Rube Goldberg solutions.
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I just copied and pasted your suggestions to my desktop : )

I did the test for bleed over last week with my toner and really couldn't hear much, that was when AT&T was working on their problems.

when the 3rd line went dead on Friday "after" they worked on it, I did monitor it with my butt set and I could hear cross ringing and then they got DT back on it and said everything was okey dokey on their end.

The major stumbling block to all this as far as shooting the trouble goes is that I can't bring the lines down or the customer flips so I have to try and do it without causing then any down time, I asked him tonight if he would let me stay there after hours and I would let myself out and he said sorry I can't do that.

I'd like to go in there on a Saturday when they're closed and let the switch go nuts until I figured it out, which I may ask to do but I don't think he'll go for it, that's why I'm going to try splitting the DT to both switches in the morning and Hope the the 7100 flips but doesn't effect the compact. my luck hasn't been too good lately though, maybe better luck tomorrow.

I really appreciate all the feedback, thanks

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There are a bunch of tests to make and if the customer won't give you time after closing to do them then he/she is taking all the responsibility and I would simply say that you can't prove that it is in the 7100 or in the dial tones without his help and I need my Compact back, thanks and bye.

You have no proof it is or is not your equipment at this point and you have no obligation to continue with an obdurate customer.

Time to send him a fax outlining the time it will take to do the tests and stating that without his/her cooperation you will be unable to further service his location.

With four lines this is not someone who has achieved the status of financial genius and you have a right to the time to do your job. Sometimes you have to say, My way or the highway, I have your money and you won't let me make it work.


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I've got to agree... if the client won't let you work on this after hours, then he needs to accept the fact he might be down during the day. We tell customers if they want a problem fixed, we need to take the system down. If they want us to do it after hours, we tell them what our overtime rate is and let them make the decision.

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Forgot to mention, just order the pads and be done with it. Older systems from Samsung, like the Compact, are more tolerant to line voltage. We actually had to take a Samsung out and place an older Avaya in a customer's site because they were two doors down from the Central Office and the lines were really hot.

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We keep several on hand just for this reason.

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Ok here's another frustrated update folks:

7:15AM I arrived onsite, I was a man with a plan (sorry I'm getting punchy) anyway..

The customers on the old reliable compact, I put line splitters in all 4 co biscuit jacks and split them into both switches, I watch the lines come in and out on both ksu's and putz on the laptop looking at the 7100 program and VM until aprox 11:45AM and everything looks great, no blips or bloops on either switch but I'm still not feeling optimistic because I've had a rough 7 days, but I bite the bullet and throw it over to the 7100 and wait and watch until roughly 1:00pm, I'm petrified to leave because I know it watches me, I even set in the parking lot waiting..

I finally get the guts up to head down the road and I don't get 2 exits down I-40 when I get the call that it's flipping out again. the first thing out of my mouth was "it's the resistance" because it was fine sharing the lines with the compact, so I turn around and head back to Hell armed with resistors. here are my reading before and after:

Line 1 828-XXX-3860 44 MA after 470 OHM 1/4 watt = 23.90MA

Line 2 828-XXX-3862 38 MA after 220 OHM 1/4 watt = 27.73MA

Line 3 828-XXX-0565 38 MA after 220 OHM 1/4 watt = 28.46MA

Line 4 828-XXX-0566 38 MA after 330 OHM 1/4 watt = 24.88MA

This time around I felt almost confident and packed up my toys and the compact and left the site.

4:15PM I get the flipping out call again 2x's in 5 minutes

I head back and throw the compact in and take the 7100 off the wall and put it in the truck, I also lost the will to live (TMI ? )

So for the last few hours I have been feeding my 2 CO lines in and I can't even make it blink.

The only way I can remotely recreate the trouble is to tie a 470 ohm resistor to the ring of pair of line 1 and 2, when I do that both lines light up and usually says No caller ID recieved, they then disconnect and I get the connect/disconnect alarm.

I also ran out to the dollar store and bought 4 of the cheapest crap SL I could find with REN 1.8
which I plan to connect to the splitters per the OBHH bunnie and see what happens.

This sucks really really bad and I don't think it's all the 7100's fault but you would think they would at least make it as durable as the older models.

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