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Intermittent DSL connection on phone line


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#1 floydhalen

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Posted 22 June 2012 - 01:34 AM

Have just moved houses. Transfered my DSL service. Also am using the same router I used before for 4+ years. My ISP says they have connected the DSL service but for 3 weeks have been going back and forth between them and my phone company trying to figure out why the DSL doesn't work.

My setup is as follows...Have a line from the phone socket in the wall to my filter and from the filter to the router and the phone. (same setup as in my previous house). Have only one phone in the house.

When the router is initally connected, I don't get a DSL signal (DSL light flashes). If I leave it connected, in about 15 min to a couple of hours (varies) I suddenly get a DSL signal and I can get on to the internet successfully. As soon as I pick up the phone to make a call, the DSL light starts flashing again and I lose my DSL signal. At this time I then remove the phone entirely from the connections and connect my router directly to the wall (tried directly without the filter and with the filter) but my DSL signal does not reappear immediately. Then when I leave the setup as is, after some time (varies again)my DSL signal comes back and I am on the internet again ....until I pick up the phone again.

Have been talking to my ISP for the last 3 weeks. They sent a technitian twice to the house. First time the guy said it was fixed (when it wasn't). Second time they said my router was bad. Also not true as a) I successfully tested the router at a friend's place and B) I got a brand new router, just in case, with same results. Then my ISP suggested I call in an electrician as the phone wiring in my house may be faulty. I called 2 of them and they both said that if my phone line is fine, there is nothing they can do.

Not sure where to go to from here.

Any help will be MOST appreciated !!!!

THANKS in advance !

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#2 The_Outkast

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Posted 22 June 2012 - 03:20 AM

Just to be clear, you only put the DSL filter on the line leading to your phone, correct? The line to the modem/router do not have a filter.

#3 floydhalen

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Posted 22 June 2012 - 03:56 AM

sorry I meant, I use a splitter. So it has two outputs, one for phone and the other (marked dsl) to the router

#4 coxchris

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Posted 25 June 2012 - 05:48 PM

Have them run a line test to your modem.

so you have

Cable (Internet/Phone)______> DSLAM>>>>splitter>>>phone with filter
|
>>>Internet cable>>Modem>>Router if applicable)>> Clients

Is the splitter after the phone filter or before the splitter

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#5 floydhalen

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Posted 25 June 2012 - 06:38 PM

My ISP did run a line test. I spent 2 hours on the phone with them at one point while they were attempting to diagnose the issue.

The phone filter is part of the splitter. Also I connected the router directly to the wall (whithout any phone connection at all) with same results.

#6 Sneakycyber

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Posted 27 June 2012 - 12:49 AM

The house is not wired correctly. Make sure the previous tenant didn't have cable broadband and voip. If they did then likely the house is wired in a loop. A phone line has 4 conductors you only need two to make a phone call, when you connect voip to an existing analog (or POTS) setup you connect the two sets of wires together so the signal get distributed to the whole house. This causes a problem for the DSL line that needs all 4. That's why when you pick up the phone it drops the internet ( your are essentially cutting two of the wires). If this is not the case then the lines are too old and you are too far away from the node. The phone company and the ISP Will only test their system to the connection Outside the house. If the lines inside are wrong its up to you to test and replace them. The phone company can run a dedicated line for the modem but its far from free and they will argue its the ISP's problem

Edited by Sneakycyber, 27 June 2012 - 12:55 AM.

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#7 floydhalen

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Posted 27 June 2012 - 01:01 AM

Hi Sneakeycyber !

Thanks a lot for your post. That does make a lot of sense. In my case I probably think it is the latter case i.e. my lines are old / too far away from the node. Reason I say that is cause I noticed sometimes the DSL signal does not drop when am on the phone but then there is a shrilling sound on the phone line. If the DSL signal does drop (usually after 10 secs) when the phone is picked, then the shrilling sound goes away. However a technitian with the phone company did suggest it could be a case of being 'wired in a loop' though I didn't understand then why that would be done. I do know that the previous tenant had a home business and was using a pbax system.

Am having an independent electrictian come over in 2 days to take a look and possibly re-wire. Will let you know how it goes.

Thanks again !

#8 floydhalen

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Posted 04 July 2012 - 05:51 AM

Hi All,

Just to let you know that my problem got resolved last week by a technician that came over to the house. When he entered, he noticed that we have an alarm system (installed by the previous owners). Even though it was switched off and inactive he suggested disconnecting it from the telephone line. I was not even aware that it was connected to the phone line. Apparently it was connected to the first phone line in the house.

Simply disconnecting it from the line caused the router to pick up the DSL signal and it now works fine with or without using the phone.

Wish I had know about the alarm in the house being connected to the phone line before. Would have saved me a lot of pain :-(

Thanks to all of you that posted comments. Hopefully this post may help someone else




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