Telephone Interfering

[Wen Choung]

I have a DSL phone line and just recently got a new phone. After I plug in the telephone cord, it disconnects and prevents me from connecting to the internet.

I've been able to connecting to the internet and connect a telephone before, but this particular phone causes internet troubles.

I know it is my telephone, but I want to know if it is possible to make it not do what it does and I want to know why it does what it does.

Some Possibly Important Telephone Specs:
- 2.4 GHz
- Cordless Answering system with Caller ID/Call Waiting
- 3 voice mailboxes

This phone is considerably more high-tech than my previous ones so I suspect it has to do with my phone doing something that replaces my internet connection. Thanks.

[oink]

Move it far away from the modem. I assume you are properly filtered.

[Wen Choung]

#1. Move away from modem.
It was nowhere near it.

#2. Filter the phone line.
D'oh! The only known use of the filter to me was that it blocks off any static sounds. Since only one of my phones experienced that sound, I only filtered one of the lines.

Turns out I ought to have filtered out the new phone too. Now I feel stupid.

Can someone teach me a quick lesson on the FULL use of the filter and how it works? :confused:

[Landon]

The filters are also know as "band pass filters" and only let a certain frequency range go through them. A lot of people "get it" when I tell them to think of the filter as a cross over setup inside of a stereo speaker.

When you have a DSL line you actually have two frequencies going through your phone line (normally you only have one), one frequency carries your voice and the other frequency carries the DSL data, the filter cancels out the DSL data.

I'll try to explain it graphically:

--------------------------------------|//////////|-----------------
Voice frequency (small bandwidth)~~~|//DSL////|~Voice goes thru~
--------------------------------------|//////////|-----------------
~~~~~~~~~~~~~~~~~~~~~~~~|//Filter///|
~~~~~~~~~~~~~~~~~~~~~~~~|//////////|~DSL is chopped off~
~~~~~~~~~~~~~~~~~~~~~~~~|//////////|(No noise on your
DSL frequency (large bandwidth)~~~~|//////////| phone, and the phone
~~~~~~~~~~~~~~~~~~~~~~~~|//////////| does not interfere
~~~~~~~~~~~~~~~~~~~~~~~~|//////////| with the DSL signal).
~~~~~~~~~~~~~~~~~~~~~~~~|//////////|
--------------------------------------|//////////|



I hope this helps,

-Landon