ADSL filter

when i got my adsl installed, the phone line was very bad until i installed a filter, so maybe it is important to have one.
 
If you are using the phone line on your ADSL line you must connect the device via a filter. The ADSL routser must not be connected via a filter.

Failure to do this will make your ADSL connection very unstable.
 
Some Telkom shops hand them out for free, others charge for it, so try and pick a lucky day for your filter obtaining endeavor.
 
marine1 said:
Ah ha so If I am not going to use the line for actual phone calls (which is the case) then I do not need the filter?
Click to expand...

Exactly. :)

But in any case, my phone line (Voice) + ADSL + Alarm system works fine whether I use a Filter or not. :confused:
 
frana said:
Without a filter don't you get disconnects or a buzz noise on the telephone line? :confused:
Click to expand...

Just tested it again.

1) Removed filter. Made a call. No "noise", and I'm still connected. Our alarm system is also connected directly to the line - no filter.
 
it often helps if you have an alarm on your circuit, as its a one-way device and the router is sending it 2way information. Atleast thats how i remember it.
 
Without a filter the analogue signal of the phone/fax/alarm etc when in use will interfere with the ADSL. Make a phone call and you will see your DSL drop.

You will need it on any analongue connection - phone, fax, modem, alarm etc.

Update: what's a one way device got to do with it? When your alarm connects it not really a one way device. Signals will be sent and received from the alarm.
 
gregmcc said:
Without a filter the analogue signal of the phone/fax/alarm etc when in use could interfere with the ADSL. Make a phone call and you could see your DSL drop.
You could need it on any analongue connection - phone, fax, modem, alarm etc.
Click to expand...

*Fixed :p
 
ive been having a problem with the filter i use on my adsl line. whenever i get a call, the dsl light goes off and i get dropped. after that, i gotta wait till it reconnects again, which is pretty annoying.

id posted regarding this earlier on here, but even after trying different connections etc, it doesnt seem to work.

this is how my lines are :
i have a main telkom line and 2 other extension phone lines too. and the internet is taken off one of these extension lines.

i was given 2 filters with the router, and so ive used one on the main phone line and the other on this line to which the router is connected. the phone and fax machine are connected to the filter, but not the router. thats how its to be done right?
 
johndev said:
i was given 2 filters with the router, and so ive used one on the main phone line and the other on this line to which the router is connected. the phone and fax machine are connected to the filter, but not the router. thats how its to be done right?
Click to expand...

You are contradicting yourself...
 
Its pretty simple - any (and all) analogue connections requires a filter.
No filter between the line and the DSL router
 
johndev said:
ive been having a problem with the filter i use on my adsl line. whenever i get a call, the dsl light goes off and i get dropped. after that, i gotta wait till it reconnects again, which is pretty annoying.

id posted regarding this earlier on here, but even after trying different connections etc, it doesnt seem to work.

this is how my lines are :
i have a main telkom line and 2 other extension phone lines too. and the internet is taken off one of these extension lines.

i was given 2 filters with the router, and so ive used one on the main phone line and the other on this line to which the router is connected. the phone and fax machine are connected to the filter, but not the router. thats how its to be done right?
Click to expand...

Each analogue device (phone, fax, 56k modem, alarm), must be connected though a filter. Each device can have its own or you can have a split at the main line: one split going directly to router, the other goes to a filter which leads to the analogue devices.

There are many different combinations, but at the end of the end the router must be connected directly to your main socket (no filter between) and your other devices must have a filter somewhere between themselves and the main sockets.

Code: 
                 -----router
--main line--
                 ----filter---splitter ---phone
                                           ---fax



OR
                                  --- filter -- phone
                 ----split one---- router
--main line--
                 ---split two --- filter --splitter-- phone II
                                                          -- fax

etc,

edit: yeah, wat he said ^^ :)
 
ld13 said:
You are contradicting yourself...
Click to expand...

sorry, what i meant was that the router is connected directly to the line, and not via the filter.

thanks turbo...ive been having my lines connected just as you've shown , but i still have problems when a call comes in. and not always either...thats the funny thing about it
 
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johndev said:
sorry, what i meant was that the router is connected directly to the line, and not via the filter.

thanks turbo...ive been having my lines connected just as you've shown , but i still have problems when a call comes in. and not always either...thats the funny thing about it
Click to expand...

Disconnect all phones, call your number from a cell, then o and disconnect the devce which just answered the call.
 
Filters

http://www.accesscomms.com.au/Reference/ADSL_filter.htm

Above is an explanation for ADSL LINE FILTERS. An ADSL line filter primarily blocks any high frequency (carrier) signal from passing through to the telephone if no filter in installed a feint noise will be heard on the telephone.....or if a fax is connected, the images may fail or be unreadable. Too many filters will increase the the capacitance and lead to further errors with the ADSL signals.
 
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