ikonn
@level3.net
|  Optimum Voice and Line In Use Problem
Problem with Optimum Voice and Line in Use error. No phone is off the hook but I cannot dial out and callers in get a busy signal. Internet and Cable TV works. I have seen a couple of other mentions of this problem on the internet but the answers suggest a bad phone or a short. Optimum says problem is on my end because plugging phones (both a cordless one and a wired one)directly into the Motorola modem work. But when plugged into the house wiring, the dial tone voltage on the wire pair drops from 25V (single phone load and unplugged from house wiring) to 2.5V. Problem happened a few months ago but then partially corrected itself within days. Problem happened again this weekend during strong rainstorm. |
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TheMG
join:2007-09-04
Edmonton, AB
 ·TekSavvy Solutions..
 ·800Hosting.com
·Dreamhost
·TELUS
 ·Shaw
| Sounds like you may have an intermittent fault somewhere in your house phone wiring, if the problem only occurs when you're using the house wiring.
The hard part is obviously going to be finding out where that fault is. Start by checking the wiring at each of the phone jacks. Re-do any connections that seem loose or corroded. If your wiring goes to an external NID, even if it's not connected to phone service, check in there too. You mentioned a rainstorm, it's possible water is infiltrating into the wiring by the NID and shorting things out. |
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ikonn
join:2008-09-30
Denville, NJ
| Thanks. Your assessment makes sense. Unfortunately, I removed each phone jack and there was no difference. The wires do go to an external telco box where they are all connected in parallel. The cables to the telco landlines are properly disconnected. I will check the outside box for corrosion and maybe isolate each jack to see where I get the fault.
Do you know if the modem on hook and no load voltage of 25v is sufficient? |
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tschmidt
Premium,MVM
join:2000-11-12
Milford, NH
·Verizon Online DSL
| reply to ikonn
Low voltage when plugged into building wiring means there is a short, either in wiring or some device connected to it.
1) Since you are using your phone wiring with VoIP service I assume you disconnected inside wire from the Telco NID?
2) If you are comfortable using an ohmmeter disconnect inside wiring from VoIP box and measure resistance between the pair and from each wire to Earth ground with all phones hung up. Should indicate open, many megohms of resistance.
We had a problem several years ago with corrosion basement jack. Took out DSL but did not affect voice.
/Tom |
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