Cordless phone does not ring. Suspect DSL

[pastaben]

I have an interesting problem. I use a Uniden DCT648 cordless phone. I tried my phone in a non-dsl home and the phone rings on incoming calls. However, in my own home, with DSL, the phone does not ring, though I can answer and call out with no problems. The Uniden is a 2.4 G cordless.

I had a Panasonic cordless phone which did ring on the DSL line. The Panasonic phone recently died because of physical wear, I think. The phone was almost 10 yrs old.

I also had a VTech 900MHz analog phone which did not ring with the DSL line, but rang on a non-DSL line.

I used the filter that came with the DSL kit. It's a 2-line DSL filter.

Any ideas? I like the phone, and I'm not sure I want to keep shopping for the right brand.

 

[exverizon]

It should all be a matter of AC ring voltage, which is supposed to be about 50 volts. A decent digital VOM should tell you what's happening in that regard. Also, I'm not a fan (yet) of the "2-Wire" brand DSL filters, if that's what you meant. I prefer to split the DSL off at the NID and deal with pure dialtone at the station. See if you can get a splitter installed, and then check the ringing voltage. And how many other stations are also ringing on the premise? There's going to be a limit, you know. Perhaps 5 is tops, depending on distance from the office. You might have to kill the ringers in some other sets to allow the cordless to ring. There's only so much energy to go around.

 

[pastaben]

I only had one other phone connected to the same line. I did try to unplug the other phone, which rings, and the Uniden still did not ring.

I returned the system, regardless, got a free cordless phone from a friend (Uniden brand also), and it rings. Go figure.

 

[Crowtalks]

Some phones have better filtering than others built into their firmware, also some of the DSL filters, I have found out, work better than others. I have seen situations where I had to stack filters just to filter the 'hiss' out of some of these cheapy phones.
I have also, on occasion, found the reverse problem. A particular phone is picked up to make or answer a call, and it kills the DSL. Strange stuff...

 

[exverizon]

A correction for the record: Ringing voltage is around 80-90 VAC, not 50. I was thinking of DC dialtone, which is about 48 VDC.

Anyhow, I've tried several 2-Wire brand filters that I still get a warning beep through on a Harris "data safe" butt set, so I'm not certain the DSL is really cut out. My practice now is to split the signal at the source with a Keptel unit. They always work.

Anyone experiences similar?

 

[Crowtalks]

Yup.
Most, if not all of the filters only filter out part of the high frequency signal, though usually enough to make the other devices happy. When you consider that the midrange for DSL upstream is @125 MH and downstream is @350 MH, it's surprising that they filter as much as they do.

 

[Crowtalks]

To continue the thought about the splitter at the NID. That is almost always the best way to go. I have found out that those devices add about 6000 virtual feet to the loop, so some customers working at the fringe areas may experience problems with these, especially, if we don't use modules without the 'half ringer' inside.