On Tuesday, 7 April 2020 05:55:06 BST J. Roeleveld wrote: > On Tuesday, April 7, 2020 5:54:25 AM CEST Ian Zimmerman wrote: > > On 2020-04-06 22:14, Dale wrote: > > > I have DSL and it isn't to fast to begin with. At > > > times tho, I'm only getting about 20 or 30% of what I should. > > > > Are you often on the phone at those times? May it be poor filtering? > > > > At my last residence - also "in the sticks", LOL - we had to give up on > > DSL completely, because 6 times out of 10 when we got a phone call the > > internet dropped. Seriously. We're not proud to support the Comcast > > monopoly, but what a difference. > > This is likely caused by NOT having a filter for every device. > > Longer version: > > DSL requires a splitter/filter between the wall-socket (where the phone > normally plugs in) and the DSL modem. It also has a 2nd connection for the > phone.
It is not the ADSL modem which requires the filter, but the analogue telephone. The filter cuts out audible frequencies so you can't hear them when you're making a call. A failed/failing ADSL z-filter will be noticed because the line will suddenly have an audible hum/buz when you pick up the phone and press a button - or perform a quiet line test.
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