I have a customer that has a magix 2.2 . They have a main building were the system is and several out buildings on the same grounds. They started losing ports on there 412(3)modules no pattern to it some on 1st card some on second and so on. It only happened when we had thunder storms. So we checked all lightning protection between buildings and all was correctly installed.Then i installed 25 pair anphenol lightning protection between system an 66 blocks and problem stopped. This was 2 years ago .Now they are having a different problem that phones in all building are shorting out for no reason. No storms or power issues.They just drop and do not come back phones are dead.Last week they lost 6 in one day in 3 diff buildings and 3 diff modules.Any help to why this is happening would help me out greatly because i have no answers for my customer but to buy more phones.
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Merlin 44## series phone dying 2
- Thread starter irishmcl
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tdaugirdas
Technical User
It sounds like a "wiring" issue somewhere - but difficult to evaluate when the phones affected are on three different TDL modules. Are the phones "truly" dead?? If you plug one of the "dead" phones into a known working port - do they come back to life?? Any info from checking the processor error logs?
Tom Daugirdas,
President
STCG, Inc.
stcg.com
Tom Daugirdas,
President
STCG, Inc.
stcg.com
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1
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So, you are saying the PHONES do not come back to life, even if you try them at different locations?
What happens when you test them at the Carrier itself?
What part of the country are you in?
Humidity or lack there of?
What happens when you test them at the Carrier itself?
What part of the country are you in?
Humidity or lack there of?
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- #4
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Ok i returned to the site today and the error log has nothing on it to explain the problem.I found that 3 ext have this issue and the same three ports made multible phones die.All three ext are on 2 different 412 modules slot/port 0407,0611 and 0612.Also they say when one dies the other 2 die and this happens in 3 different buildings.The main building were the system is and 2 out buildings.Power is fine and protected with lightning protection and ups.
I would look at the possibility of foreign voltage on the cable pairs for these 3 phones, assuming the same 3 expire each time. Disconnect them from the switch and disconnect the phones and using a Volt-Ohm meter look for AC or DC voltage across the pairs, and individual wires to ground, there should be none.
Also measure the resistance across the pairs, and individual wires to ground. In this case you should see high resistance (essentially open)in all cases.
The switch side might be protected, but not the station side, therefore the phones get fried.
Also measure the resistance across the pairs, and individual wires to ground. In this case you should see high resistance (essentially open)in all cases.
The switch side might be protected, but not the station side, therefore the phones get fried.
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- #7
What kind of protector modules are you using on both ends?
Has the grounding/bonding wiring to the protectors at both ends been properly verified?
If that is faulty, you can have unstable voltages at discharge from a surge, lightening hit or foreign voltage/cross that could kill the phone sets or ports. If you are not sure, contact a qualified electrician to check the facility grounding/bonding points.
....JIM....
Has the grounding/bonding wiring to the protectors at both ends been properly verified?
If that is faulty, you can have unstable voltages at discharge from a surge, lightening hit or foreign voltage/cross that could kill the phone sets or ports. If you are not sure, contact a qualified electrician to check the facility grounding/bonding points.
....JIM....
- Thread starter
- #9
Problems don't happen for no reason and components don't stop working for the fun of it!
Something is causing the phones to go dead.
Please describe "shorting out for no reason".
Per phonesrus post, just what he said. You need to check the integrity of the cable pairs end-to-end and/or the station wiring for voltage/resistance measurements.
Now you mentioned that 2 years ago you had problems and added a 25 pair protector, so something was going on then, if the problem went away after it was added. Protector modules do go bad when they can no longer perform their function or the limit is exceeded.
Who made the protectors and are they the same in all buildings??
....JIM....
Something is causing the phones to go dead.
Please describe "shorting out for no reason".
Per phonesrus post, just what he said. You need to check the integrity of the cable pairs end-to-end and/or the station wiring for voltage/resistance measurements.
Now you mentioned that 2 years ago you had problems and added a 25 pair protector, so something was going on then, if the problem went away after it was added. Protector modules do go bad when they can no longer perform their function or the limit is exceeded.
Who made the protectors and are they the same in all buildings??
....JIM....
- Thread starter
- #11
Finally the answer to this problem...The power company had a exposed MAIN feeder in the ground and was causing stray voltage. After they repaired this issue no more phones died and have had no problems since.Thank you to everyone who had some possible input.
As I have said before, surge protectors do NOT protect from a hit UP the brown route, even the electronic models. Any electric charge seeks to return to a zero state and will take whatever path it can find to reach that point. This is a case of that fact. I have seen it too many times! It can be difficult to locate, which is why I suggested what I did in my earlier post.
Glad you were able to resolve it, this is one you won't soon forget.
Glad you were able to resolve it, this is one you won't soon forget.
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