my landline phone doesn't work when online

mommy32008 · Apr 1, 2008, 06:30 PM

is there something free that I can download that will tell me the calls i'm missing on my landline when online.

Stratmando · Apr 8, 2008, 06:32 AM

Hey Kiss, I thought I was only one to hear the sound of DSL on my test set, others say they can't hear it on same test set. Didn't know if they couldn't hear that High?

KeepItSimpleStupid · Apr 8, 2008, 07:12 AM

Well, that's in theory.

Here is a pic of VOICE/DSL bandwidth

DSLTutorial - page 29 of 62

There are multiple modulation schemes and therefore one version of DSL can be better than another.

But, a transition which would contain an infinate amount of frequencies if it had a slope of infinity, by doing an Fourier transform. So, you may not be able to hear a sine wave frequency of 25 khz, but you will hear something if that wave was square.

I jsut did some surfing concering DSL and there really isn't too much about particulars. Probably in a standards document somewhere.

It seems that when looking at the driver IC available, DSL amplitude is very high (>20 V p-p) compared to telco voice signals. I guess, it has to be because the ringing signal, voice and the DC signals are riding on it. The DSL signal is riding differentially on the pairs as would ring and voice and DTMF and call progress. The DC signals just determine on and off hook. The DSL signal has to have a lot of current drive capability.

I guess, it could be fun to differentially probe the line with a 100 MHZ scope.

mommy32008 · Apr 8, 2008, 10:55 AM

it doesn't look like either of them

KeepItSimpleStupid · Apr 8, 2008, 11:12 AM

Post a picture using "go advanced".

Does it have any writing on it that you can post?

Because now I am throughly confused. ( coupler maybe?)
http://www.consumer.philips.com/cata...geFront370.jpg

The ideal device, should look like:

http://img.alibaba.com/photo/1103335...d_Splitter.jpg
With the Phone and ADSL Modem side clearly marked.

Stratmando · Apr 8, 2008, 11:43 AM

mommy32008, can I just call you Mom? Anyway, Can you provide Make and Model of Modem?

KeepItSimpleStupid · Apr 8, 2008, 12:13 PM

Strat:

Your probably not paying attention. Mommy said:

Quote:

Originally Posted by mommy32008

power, ethernet, usb, dsl, and internet written on it. lol guess it's dsl

So, it's DSL.

Do you have other reasons for asking for the model #?
I can think of some stupid reasons why it doesn't work, so I think the key is determining what we think are "filters" might be.
Couplers and 2 line adapters come to mind.

ballengerb1 · Apr 8, 2008, 12:50 PM

The splitter should help you avoid unhooking your phone but I think you are want something else in your question. You want to be able to see something pop up on your computertelling you that there is an incoming call, right?

retsoksirhc · Apr 8, 2008, 12:54 PM

Throwing ideas out there...maybe dialing up while using DSL? I've never tried my DSL without a filter, but I didn't think it would stop ringing entirely...maybe shes online with DSL, but still dialing a backup number, or maybe using an AOL browser and dialing.

Or maybe I'm wrong and not having a filter WILL make the phone not ring. I guess that probably depends on the phone, too...

ballengerb1 · Apr 8, 2008, 12:59 PM

I think its likely she is on a plain old dial up modem, on single land line.

KeepItSimpleStupid · Apr 8, 2008, 01:16 PM

ballenger:

Your not paying attention either. The modem has a DSL light light on it.



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