It means that the polarity of the trunk is not correct. To fix you need to flip the pairs either at the D-Marc or at the TN then test if you can using LD 36
this is for a remote site. So there's nothing I can do, right? i need to have someone physically go there and do this? do you mean reverse the blue/white where it's punched down? My tech went out there and traced the number (which was an incorrect number) and said I should call Bell South. it sounds like I don't need to call them at all because when I looked up the trunk I got a completely different phone number. Should I have him go back out and do what you said to do? thanks (PS: how do you test in LD 36? I use LD 36 to get the phone numbers for my copper trunks. is that what you mean?)
The polarity reversal (RVSD) must be physically corrected. Just a note though, sometimes Telcos reverse the pairs when testing or troubleshooting repairs so it is possible that the trunk was hooked up correctly before but is now RVSD.
so should I call the local telco first? and when you say they reverse the pair when testing that must also be a physical thing, right? I don't think it was them, though. The TN was fine until we got a minor alarm on it. A tech went out and now it comes up RVSD. So my tech probably did this. He also mis-identified the phone #. should I insist to my vendor that this tech go back out?
Why don't you tell the technician/vendor that you have a trunk that isn't working. The only choices are that either he visits the remote site, flips the cross-wire and checks the line and the problem clears, or he calls the provider and leaves a ticket that this trunk isn't working. Either way it is incumbent upon him or his company to correctly troubleshoot this trunk.
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