broadband drops - like filter issue

I have a problem with broadband dropping when phone calls happen.
This is on a line which is filtered (properly I think). The effect is just like what happens when there's no filter at all.
Unusual aspects of this setup are : the telephone is a Panasonic KX phone system. There is also Redcare on the same line.
But I've had other installations of the same Panasonic phone system with no problems.
I actually doubled up the filter for a couple of days, but that made no difference.

Has anyone experienced anything like this ? Any ideas ?
This is a recent installation - new phone service, new broadband service. All Entanet ADSL2+ .

I assume the Redcare system is also a recent installation so properly filtered?

The normal cause of broadband falling over when a phone call happens is what is called a "High Resistance Fault" on the line. Difficult for engineers to find - many fail.

Hi Robertos, well guess what -
It was a bad filter. New filter - changed it, and bingo, everything has been fine for the last three and a half hours.
Just proves - the simplest answer is usually the best one.
Thanks for your response all the same.

I assume the Redcare system is also a recent installation so properly filtered?

Redcare does not require a filter. The pair to the block terminal 92a should be 'doubled up' on the same terminations as the incoming pair, i.e. on the back of the NTE.

I thought modern control boxes had internal filters? Older ones did not? Memory hazy from when I had one.

The alarm engineer just happened to be in when I was there the other day. He did mention something about a filter. I'm sure he meant filter on the alarm side. But I didn't follow up, had other things happening at that moment.

And Yes is the answer - the alarm system is a brand new installation as well.
However, all is fine with this setup now. Been no more problems.

In reply to a post by RobertoS:

I thought modern control boxes had internal filters? Older ones did not? Memory hazy from when I had one.

Would be better to filter it from the NTE5 end I would have thought? But then I always prefer to filter extensions from a filtered faceplate anyway

Maybe it is, but as it turns out t be a modern installaton I think we can assume it is fine .

I thought modern control boxes had internal filters? Older ones did not?

That's correct, but control boxes using the Redcare system don't have/use a 'dialler' hence no filter required.

Ah!

Thanks .