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Thread ID: 101143 2009-07-03 01:23:00 Broadband In Line Splitters smurf (6545) Press F1
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788330 2009-07-03 01:23:00 Rang my ISP today after numerous disconnects occurring and thinking my ADSL router might be at fault. As part of the diagnosis of the problem, they suggested that I remove the in line filter from the phone socket and connect the router using a standard telephone cable and see if that made any difference. The phone jack I am using is dedicated to the broadband connection and does not have a phone plugged into the filter. So far no disconnects have occurred and I am wondering if the in line filter was the problem why would I need to have one anyway. The phones throughout the house work well even though I now have this direct cable without a filter on the computer telephone jack. My question is: If it works well without a filter attached and there is no loss of quality on the household phones, why would I need one assuming the problem was the filter and not the router? By running without one is it likely to create problems down the track?? smurf (6545)
788331 2009-07-03 01:35:00 Have you used the phones (made / received a call) without the filter connected? HOW are the phones connected?? Are they going through the same phone jack, or another jack? If theyre going through another jack (its not connected to the same jack as the modem), thats probably why theyre not affected Speedy Gonzales (78)
788332 2009-07-03 01:41:00 Hi Speedy.......Yes have made and received a call without the filter connected. The phones go through other jacks not through the computer one which is dedicated to the computer. Thanks for your reply. smurf (6545)
788333 2009-07-03 10:33:00 If you have a dedicated socket for the computer then you have probably had a telecom splitter installed,and so you don't need in-line filters on the other phones anyway.The reason for the inline filter on the computer jack is probably because the plug on the line cord from the modem is an RJ11 plug,not a BT plug,so the filter only works as an adapter for the cord

Peter
Peter Coleman (597)
788334 2009-07-03 10:40:00 Thanks Peter, I assumed that was the case.:thanks smurf (6545)
788335 2009-07-04 00:25:00 You should never put a filter between modem and jack, anyway. The filters are only for phones if they are on the same line. You would have been filtering out the high frequencies so no wonder you had problems. linw (53)
788336 2009-07-04 00:40:00 Most filters have an ADSL and a Phone jack, so you can plug both into the same wall jack. That is how mine is setup. Agent_24 (57)
788337 2009-07-04 01:32:00 If you have a dedicated socket for the computer then you have probably had a telecom splitter installed,and so you don't need in-line filters on the other phones anyway.The reason for the inline filter on the computer jack is probably because the plug on the line cord from the modem is an RJ11 plug,not a BT plug,so the filter only works as an adapter for the cord

Peter

So with this setup, can you still use a phone on that line or would one run a "phone line" to the computer as well? If the computer works fine on the phone line & the phones work fine on the filters: is there any point in a line splitter? PJ
Poppa John (284)
788338 2009-07-04 05:35:00 You should never put a filter between modem and jack, anyway . The filters are only for phones if they are on the same line . You would have been filtering out the high frequencies so no wonder you had problems .

I think you are incorrect linw . . .

How adsl is set up is that it mix's both the standard telephone signal and the internet signal, the line filters are made so that the line can be split into its desired operation .
Here is a graphic showing what I mean . ( . wikimedia . org/wikipedia/commons/8/87/ADSL_frequency_plan . svg" target="_blank">upload . wikimedia . org)

In this case there might be a splitter or microfilter installed near the demarcation point, from which a dedicated data line was installed, so you could have been running the line via 2 filters and giving you the issues .



. wikipedia . org/wiki/Asymmetric_Digital_Subscriber_Line" target="_blank">en . wikipedia . org
Tuneznz (13203)
788339 2009-07-04 09:32:00 I actually agree with linw - seen it many times those splitters cause problems.

Generally speaking, if there is a phone on the same line/Jackpoint as the ADSL, and there is "noise" on the phone, being the high frequency, then yes put in a splitter to eliminate it. I have seen many successful places, simply setup with a double adapter, one for the ADSL the other the phone.

Even Telecom will say that, as per the original post - remove the splitter and it worked.
wainuitech (129)
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