Now this is a really dumb question but I thought I better just check.

During the week my company rents me a flat (as I'm working offsite at the mo). They have also provided me with a phone line. Trouble is that whenever I pick up the phone and hit certain numbers, I get a "that number is not recognised" message. It's not the phone as I have tried another so I'm just about to raise it with my company to get fixed.

But then I started thinking (a dangerous pastime). I know the line is plugged into a ADSL microfilter and that's plugged into the wall. Does anyone think this microfilter could be the cause of this trouble. The property doesn't have ADSL activiated yet. I don't think it could be but I thought I should ask for some input. I'm going to report the problem anyway but I'll feel a little silly if I report it only to get back to the flat after work and find out that was the problem.

Yeah, it wasn't the filter. Didn't think it was but you never know :)

What was it then ?
Just a normal high quality BT phone line ;)

Just as FYI, the microfilter filters out the frequency that the internet data travels on. If your line has DSL on it and you don't have a filter you'd hear hissing and popping and static.

Well I'm guessing it's the BT line - I just don't know yet. There's two people that normally deal with telephone problems for the UK in this company. One of them is on holiday. The other seems to be completely ignoring my helpdesk call and email.

Luckily the other (better) person is back off holiday on Monday so hopefully I'll hear something back next week.