Why does my phone line stop working when I connect the modem?

Question

I have a technical problem with my internet at home. When i connect my Modem, the phone line stops working. All calls are routed to voice mail, and I can't make any calls. My modem is connected through a micro filter, and intially I wasn't having this problem. Sky is my Internet provider, and it has taken more than a month for them to just call me back after I logged my problem with the technical department. I am still waiting for them to sort it out. I though the problem is with the phone line, but BT has told me that they is no problem with my line. This started when I discoved that my wireless netgear could not switch on, so I bought a new one, but them the problem extended to my phone not working once I connect the modem. Before this, my broadband was working properly. Can anyone please help?
Thank you.

Answer 1

First i would check that there were microfilters on all the phones, second I would disconnect everything apart from:



the computer to the modem,

the modem to the microfilter,

microfilter to the phone line and

the phone to the microfilter.



this means everything is basic.

Then test the connection.

If it doesn't work tour modem may have an IP issue or something un-solvable.

If it dose work: connect one device at a time and test the connection, until the problem accrues again. This should tell you which device is messing up. Then just send it back and get a replacement.

If the problem persists you need to get a specialist to come to your house to sort the problem.

Answer 2

Every home has a BT Master Socket, where your telephone line comes into your house, it's a bit different from the rest of the sockets in your home (if you have more than one!) and has a detachable lower half.



1) Find the Master Socket in your home, and unscrew the lower half of the faceplate, behind this you will find a telephone test socket. Bear in mind that when you take the faceplate off, this will disconnect all of the other sockets in your home; putting it back on reconnects them.

2) Plug a microfilter into the test socket and a telephone into this, the make sure you get a dialtone. Try ringing your mobile to make sure the line is working ok.

3) Plug your wireless router into the microfilter and see if you can get a connection to Sky broadband.

4) Try ringing out on the phone while the modem / router is plugged in.



If this works, the line is ok and you can connect to broadband, I would suggest there's a fault with the BT wiring in your home.



If it doesn't work, the microfilter is faulty.

Answer 3

I had a similar problem where the router would not connect to Internet and the phone did not work but had a loud buzz. The phone worked with router power off. The cause was RF interference due to the close proximity of cordless phone and router power bricks and the power/telephone leads.

Answer 4

You have a faulty Microfilter, you need to contact your Internet provider and ask for a replacement.

Answer 5

Sounds like your microfilter has gone down and needs replacing, providing that all was fine in the past.

Answer 6

Yes, you probably just need to replace your microfilter and to check that you are using microfilters on ALL devices plugged into your phone line.