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Technical News & Discussion => Broadband, Internet & General Computer News & Discussion => Topic started by: Clive on May 30, 2015, 21:57:25

Title: Using phone trips internet
Post by: Clive on May 30, 2015, 21:57:25
I seem to have developed a strange problem with my phone/internet system.  It started when I received a call lunchtime from 000000000000 which my CPR Callblocker duly blocked.  When I tried to use the phone this afternoon I discovered my line was dead so I plugged a simple handset straight into the socket and my line was normal.  Next, I removed the callblocker from the system and I was able to make calls with my usual phone equipment.  But the internet immediately tripped out and went through a re-boot.  Now, each time the phone is used the same thing happens.  I'm treating the fake phone call as a red herring but I'm just giving you the full picture.  If anyone has any ideas..... :dunno:
Title: Re: Using phone trips internet
Post by: Clive on May 30, 2015, 22:09:26
I think I've solved it.   :laugh:  I seem to have the wrong cable connecting the phone to the filter which might explain everything.  But it's too dark to fiddle around right now so it can wait until morning. 
Title: Re: Using phone trips internet
Post by: Simon on May 30, 2015, 23:43:37
 ::)
Title: Re: Using phone trips internet
Post by: Clive on May 31, 2015, 08:47:00
Normality is restored!  I'd connected the phone to the broadband socket on the filter.   ;D
Title: Re: Using phone trips internet
Post by: Simon on May 31, 2015, 12:57:20
 :slap:
Title: Re: Using phone trips internet
Post by: Clive on May 31, 2015, 14:51:54
I'm just shocked the phone worked at all through the broadband.   :o
Title: Re: Using phone trips internet
Post by: Technical Ben on May 31, 2015, 15:28:11
I'm shocked it fitted in the socket. ;)
Title: Re: Using phone trips internet
Post by: Clive on May 31, 2015, 20:42:24
That's where the callblocker came in Ben.  I used the callblocker cable to connect the phone to the BB filter.   :whistle:  But now I think I might be able to fix the callblocker too.  There is just no stopping me now!   ;D
Title: Re: Using phone trips internet
Post by: nowster on Jun 01, 2015, 00:50:06
RJ11 sockets are usually wired with the centre pair being the active line.

A DSL filter only filters the phone socket. The "DSL" socket is a straight connection to the phone line.
Title: Re: Using phone trips internet
Post by: Clive on Jun 01, 2015, 14:20:56
That explains why the phone worked in that socket.  But is that why the internet connection was nuked when I used the phone?
Title: Re: Using phone trips internet
Post by: MisterW on Jun 01, 2015, 16:50:18
QuoteBut is that why the internet connection was nuked when I used the phone?
The internet was affected because the phone wasn't filtered.
Title: Re: Using phone trips internet
Post by: Clive on Jun 01, 2015, 19:43:32
I knew if I waited long enough someone would come up with a sensible answer.   :thumb: 
Title: Re: Using phone trips internet
Post by: MisterW on Jun 02, 2015, 08:35:53
A more detailed explanation...
QuoteWhat a Microfilter does
A microfilter performs two main tasks. First, it prevents high frequency noise from appearing at the telephone and potentially decreasing voice quality. Second, it prevents the telephone equipment from interfering with the modem by preventing harmonics, overtones and changes in impedance caused by the telephone equipment.
Title: Re: Using phone trips internet
Post by: Clive on Jun 02, 2015, 14:25:06
Thanks for that information.  :)  I know the filters can wear out over time and need replacing.