adsl.. phones..modems.. no phone @$$£

i'm having a little reoccuring problem.


I have one master telephone socket with a filter and an extension cable that runs to a room with my pc in it. ( the extension cable has an RJ11 plug the filter side plugged to the adsl socket.. and pc side is hard wired to a wall socket)

internet will work fine but the phone stops working on and off ( i have tried many different phones and different filters).. the phone will work if i unplug th extension lead... internet will work regardless.. the extension is wired ok and have tried re wiring it..

any ideas would be greatly appriciated.. are there any known problems of this sort?

thanks


this is very annoying and has happened in 2 different locations..

I'm real unclear as to what's wired to what how ... with adsl you need one of those 'filters' in every single socket anyhow, every single place there's a connection 'out' you want one (you can hang several phones from one extension, as long as there's nothing else but phones connected to that circuit & that circuit starts with a filter)

ok. there is one master socket with a filter plugged into it. the phone is plugged into the filter here and an extension runs from the adsl line on the filter to the pc room.

the extension has an rj11 cap the filter side and a standard telephone wall socket the pc side. since the extension runs from the filter i shouldnt need another one at the pc side. the pc modem plugs straight into the extensions wall socket( in the pc room).

Is it a standard phone or a DECT (digital cordless)? Did you try a completely different brand/shape of microfilter? If the ADSL works OK and the phone works OK without the microfilter fitted or ADSL side in place, and has occurred in more than one location, that suggests a problem with the microfilters you got. I've encountered some that have been assembled incorrectly that have prevented the voice line from working as expected. Is it completely dead i.e. no dial tone, or just no ringing?

so you are plugging in the adsl modem into a voice filter effectively?

the phone line is not digital just a bog standard uk phoneline supplied by bt.

... and the modem(via extension lead with wall socket) is plugged into the adsl socket on the filter.. not the voice line.. unless were talking bout the extension socket then yes maybe thats the problem.. and maybe i should ditch th eextension wall socket and use a longgg rj11 straight from the filter on the master socket to the pc modem in the office?? or maybe wire an extension directly into the master..

hope that made sense..

:| i actually havent tried a different brand of filter.. ..

You only need the filter on the phones, not the modem/computer........

The filter converts digital to analog. ALL your phone lines are digital if you have DSL.

Quote:

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Originally Posted by DocPC

You only need the filter on the phones, not the modem/computer........

The filter converts digital to analog. ALL your phone lines are digital if you have DSL.

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Asymmetrical Digital Subscriber Line provides always on Internet access over your existing phone line. Using a special ADSL modem and line filters, the frequency bands that are available on the copper phone line are expanded to enable higher speeds. ADSL uses frequency bands between 0 and 4 Khz for your telephone service and 20 Khz to 2.2 Mhz for your ADSL service - this is how you are able to use both ADSL and your telephone at the same time. Filters are used on phones to filter frequencies higher than 4khz from being sent to the phone. ADSL is analog, so don't be misled by it's name. ISDN is digital. T1's and T3's are digital, but not ADSL.

ok ok.. i know all this... and onto the point does any one know why the phone works intermittantly(any phone for that matter)?? :).... the filter is doing its job (or not a sthe case may be) ie filtering the phone signal from the adsl . the phone is pluged dinto the phone ''socket'' on the filter and the modem via an extension into the adsl ''socket''... just thought maybe there may be some known issues with extension cables... its about 20m long..if that makes a difference.. there are no disruptive electro magnetic sources of any kind between the master socket and pc

Is the pc connected via a filter or not?

As doc said, if you have a filter between the pc and the wall socket, you have a problem.

By extension, do you mean a splitter? or a properly configured slave wall box wired from the master?

on a couple of occasions recently i have had a few problems with.. pcs disconnecting from the internet only when using perculiar(so to speak extension cables) the cable of which i speak at the moment (again) is at one end wired directly into a wall mounted box(looks like any other extension box ) and has at the other end of itself an rj11 plug........ this rj11 plug is connected to the adsl port on a filter which itself is plugged into the master socket.. a phone is plugged into the phone port on the filter.. ok.... the pc via a usb modem is connected to the extension box .

i have checked the bt(british telecom) wiring diagrams and the extension box is wired correctly.....

since i have never seen an extension cable as i have described above before before(usually i wire extensions straight into the master box).. i though that there might be a problem connecting it directly to the adsl side of the filter????

It could be that one wire has broken in the extension cable, but is making enough to get a connection. I had this on my dialup, took forever to track down.