ADSL doesn't work with phone plugged into second socket
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Posted by Lionel van den Berg on March 14, 2008, 9:29 pm
Please log in for more thread options I've had my telecom company out 3 times to fix this problem. First it seems there was a connection problem at socket in the wall. Having fixed that another problem remains. I have two sockets, if I plug in the ADSL modem it works fine, however, if I then plug in the telephone the ADSL drops off but the phone still works. Anyone have any idea what the problem might be? Could it be a dodgy line filter? Thanks Lionel. | |||||||||||||||||||||||||||||||||||||
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Posted by Paul on March 15, 2008, 5:37 am
Please log in for more thread options The "kit" from my ISP, included an ADSL modem and four filters. You use the filter, one per telephone. This is the filter they provided in the kit. You plug the filter into the wall, then the phone goes into the filter. The filter removes the high frequency content, before it gets to the phone. http://www.dsldepot.com/ais/item_images/z200sm.JPG The wiring would typically look like this. Notice that the ADSL doesn't get a filter, but the phones do. An alternate technique, is to use a splitter at the demarc. But that requires a technician to come to your house. That is why the phone company sends out these kits, for a "splitterless" install using filters. ADSL---Router---Computers | | C.O. ------- Demarc ---------X------X------X---X--X (jacks) | | | | Filter Filter Filter Filter | | | | Phone Phone Phone Phone One issue I had, was the quality of the phone wiring and jacks in the house. I determined that my jacks had some surface corrosion (they didn't even work well with a dial-up modem, so I had some advanced warning they were bad), and that led to variable ADSL performance. Once I disconnected all the phone wiring, and ran new wire to the computer room, no more problems. Mine looks like this. ADSL---Router---Computers | | C.O. ------- Demarc ---------X---X | Filter | Phone See "Installation issues" here. I corrected my problem, without reading this. I've had ADSL for several years now. I would have done more wiring, but I'm just too lazy :-) http://en.wikipedia.org/wiki/Asymmetric_Digital_Subscriber_Line Paul | |||||||||||||||||||||||||||||||||||||
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Posted by Lionel van den Berg on March 16, 2008, 2:45 am
Please log in for more thread options On Sat, 15 Mar 2008 05:37:21 -0400, Paul wrote:
Sorry for not including more information. I know where the line filter belongs, it has been working flawlessly for over a year until the recent problems. My wiring looks more like the following: ADSL---Router---Computers | | C.O. ------- Demarc ---------X------X | Filter | Phone > One issue I had, was the quality of the phone wiring and jacks in the
> house. I determined that my jacks had some surface corrosion (they > didn't even work well with a dial-up modem, so I had some advanced > warning they were bad), and that led to variable ADSL performance. Once > I disconnected all the phone wiring, and ran new wire to the computer > room, no more problems. I looked at the jack immediately before the ADSL router. I could not see any problems and the technician also checked this and found a small wiring problem, I wasn't around so could see what it was. I might have to take a look at the second jack as that is the one I've been using the phone in to test. Thanks for the info. Lionel. | |||||||||||||||||||||||||||||||||||||
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Posted by GT on March 17, 2008, 6:03 am
Please log in for more thread options > On Sat, 15 Mar 2008 05:37:21 -0400, Paul wrote:
> > > Sorry for not including more information. I know where the line filter > belongs, it has been working flawlessly for over a year until the recent > problems. > > My wiring looks more like the following: > > > ADSL---Router---Computers > | > | > C.O. ------- Demarc ---------X------X > | > Filter > | > Phone > You need a microfilter on every phone socket being used. You don't seem to have a filter on the ADSL modem! | |||||||||||||||||||||||||||||||||||||
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Posted by Lionel van den Berg on March 17, 2008, 6:46 am
Please log in for more thread options On Mon, 17 Mar 2008 10:03:26 +0000, GT wrote:
>> On Sat, 15 Mar 2008 05:37:21 -0400, Paul wrote:
>> >> >> Sorry for not including more information. I know where the line filter >> belongs, it has been working flawlessly for over a year until the >> recent problems. >> >> My wiring looks more like the following: >> >> >> ADSL---Router---Computers >> | >> | >> C.O. ------- Demarc ---------X------X >> | >> Filter >> | >> Phone >> >> > You need a microfilter on every phone socket being used. You don't seem
> to have a filter on the ADSL modem! The modem has one built in. Even so, it was working for a year with no problems. Cheers Lionel. | |||||||||||||||||||||||||||||||||||||
>
> I've had my telecom company out 3 times to fix this problem. First it
> seems there was a connection problem at socket in the wall. Having fixed
> that another problem remains. I have two sockets, if I plug in the ADSL
> modem it works fine, however, if I then plug in the telephone the ADSL
> drops off but the phone still works.
>
> Anyone have any idea what the problem might be? Could it be a dodgy line
> filter?
>
> Thanks
>
> Lionel.