Line Filters - Where Can I Buy Them?

[forumadmin]

This information has been provided by "Chicken" from the Whirlpool forums:

Home phone lines with under 5 phones / fax / equipment

They are best served by using inline filters. Multiple equipment can be connected to one filter, by using a splitter. The idea is a filter stops ADSL signals from reaching phone / fax / 56k modem/alarm equipment.

Prices (approx):

Netcomm $10
LSE: $11
Telequip: $13
D-Link: $15
Dynalink $15
Alcatel: $24

Where to buy:

http://www.computermarket.com.au/promotion.php - Netcomm
http://www.computermarket.com.au/ - LSE, D-Link
http://www.warcom.com.au/ - D-Link, Telequip
http://www.aussiepcshop.com/ - Netcomm
http://www.harristechnology.com/Scripts/xworks.exe?PART:C4748#Tof - TE, D-Link
http://www.warcom.com.au/shop/browse/adslaccess - Cordless Phone Filters

NOTE: There are reports from Panasonic & Audiovox cordless phone users, that D-Link filters will degrade audio quality with phone calls. There are certain views that Alcatel filters have the best compatibility with other telephone equipment, although there have also been positive reports with other lower cost filters.

Home phone lines with more than 5 phones / fax / equipment

A central splitter maybe more cost effective. A central splitter is installed where the phone line from the street splits into multiple connections, usually connecting to different locations in a house i.e. rooms, kitchen, bathroom, lounge.

These require professional installation.

Prices (approx):
D-Link: $33
Alcatel: $60

Where to buy:

Dick Smith Electronics – D-Link
http://www.warcom.com.au/ - D-Link
http://www.computermarket.com.au/ - D-Link
http://www.jsit.com.au/ - Alcatel

[Paul Warren]

We sell dlink, lishin, and telequip..

Dlink are honestly a waste of money - they cost the most and work the worst.

Go for telequip, generally 40% cheaper (atleast) and work a hell of alot better than dlink do.

Telequip actually resell alot of gear to telstra and dlink. : )

Regards,
Paul (Warcom MD)

[Mick]

Has anyone actually heard of a phone being interfered with by an ADSL signal if you don't have a filter?

I've been advised that the only service a filter really provides is to make sure that anyone who plugs a modem or fax into your PSTN line and makes a call won't bring your ADSL down (and hence their modem connection will be much slower).

If you have a home ADSL line where you know that a modem / fax would only be connected by yourself in the case of your ADSL being down is there really any necessity for a filter?

Mick.

[astevens]

I have a line filter. Do i connect to the phone or on the adsl modem. At the moment it is between the wall socket and the adsl model and whenever i make a phone call my connection drops out.

Should i swap so the filter is on the phone?

Stupid question probably but your assistance would be great.

thanks

Anthony

[AffinityVision]

Originally posted by astevens
I have a line filter. Do i connect to the phone or on the adsl modem. At the moment it is between the wall socket and the adsl model and whenever i make a phone call my connection drops out.

Should i swap so the filter is on the phone?

Stupid question probably but your assistance would be great.

thanks

Anthony

Filters go between any wall socket and a normal telephone device, you do not put a filter on the line to the ADSL modem -- use a double adapter if necessary for the other telephone device, including analogue modems (56k).

Wall --> filter --> phone
Wall --> filter --> 56k moden
Wall --> filter --> fax machine
Wall --> ADSL Modem (no filter!)

www.affinityvision.net/adsl/

[revengez]

guys in my case i was using the filter like this, i connect the filter straight to my adsl modem netcomm 1200 and in the filter i put one line straight to my phone which is very close to the computer which i use the cable straight from the box netcomm provide me with and the other half i put a telephone line from outside my room in the other half of filter

wall >> filter >> modem >> phone

so can anyone help me please ? is this the reason why sometimes i get drop and password verification denied ?

[H4Inf]

Is a single filter required for each phone, or may I plug a double adapter into a filter, and run 2 phones from that?

Any idea of the number of phones a single average filter can support?

Thanks,

Paul.

[Paul Warren]

Hi Paul,

You should be able to do that no worries at all : )

Generally I would not suggest you run any more than say 2/3 phones of the one filter.

I work on the basis of; one filter per phone, fax.

Cheers
Paul

[dammit126]

When ever the living room fone is picked up or someone makes a call from the living room fone, my adsl connection drops out.
my config is this

atm i have a double adaptor at the wall socket which connects two phones.

Wall socket ==> living room phone ==> adsl modem.
wall socket ==> adsl filter ==> 2nd phone

During the month of October, this setup was fine, i didnt get any connection drop out, i could make fone calls from either fones without problems. Yet during November, whenever i pick up the living room fone i get disconnected.

What to do?

Should i get another adaptor for the wall socket to run directly to the adsl modem or are there any alternates.
Thx

[ybop]

Originally posted by dammit126
atm i have a double adaptor at the wall socket which connects two phones.

Wall socket ==> living room phone ==> adsl modem.
wall socket ==> adsl filter ==> 2nd phone


If you think about it, you will see why this will not work. You have the adsl modem going to the phone which goes to the wall socket. Thus the phone is not filtered.


Should i get another adaptor for the wall socket to run directly to the adsl modem or are there any alternates.
Thx

All phones must be filtered and the modem must not. So yes you will either need another adapter so that the modem runs directly to the socket and the two phones each have their own filter or run the two phones to a double adaptor and then thru a filter to the socket. Either way will work.

I have three phones going to one socket via one filter and it works fine for me.

[Affinity]

Most, if not all resellers should have stocks of filters and experience with what works.

Anyone with problems should consider checking with a reseller.

[Paul Warren]

Wall socket ==> living room phone ==> adsl modem.

As David has suggested, this setup is the root of your problem.

You can fix it by using something like this:

http://www.warcom.com.au/shop/flypage/adslaccess/406

One side is filtered (hook your phone to it) the other side is straight through, so hook your modem to this one.

You can get this filter from myself of affinity.

Shipping is $6 from us, not sure what they charge.

[dammit126]

okay thx for the info guys

[Jez S]

G'day all, I have an Uniden phone and when used on handsfree I could hear but people couldn't hear me.
The interesting and correct solution was to have two filters running in a line to my phone!
They are both D-Link though and going by some of the earlier posts, that may be the reason for that.

[Spud Gun]

Hi All,

I have a Dlink 302G modem, and when my Uniden phone is answered or is hung up, my connection drops away momentarily. I have 3 phone points and my set up is as follows:

Phone Point --> Filter --> Phone
Phone Point --> Filter
Phone Point --> ADSL Modem (no filter)

The filters I bought are not Dlink, in fact I can't remember what make they are. Are Dlink the ones to get? Or Telequip? Or C10? Which ones work best with my configuration?

[Affinity]

Originally posted by Spud Gun
Hi All,

I have a Dlink 302G modem, and when my Uniden phone is answered or is hung up, my connection drops away momentarily. I have 3 phone points and my set up is as follows:

Phone Point --> Filter --> Phone
Phone Point --> Filter
Phone Point --> ADSL Modem (no filter)

The filters I bought are not Dlink, in fact I can't remember what make they are. Are Dlink the ones to get? Or Telequip? Or C10? Which ones work best with my configuration? Telequip usually work best, see my website if you want.

[Danielk]

What if im using a old 600 Series Socket, how do i go about connecting that?
Currently using dialup.

Thanks

[Anne1]

Hi Danielk
With the 600 series sockets, just put the filter at the phone end of the line - making sure that the filter end marked 'phone' is pointing towards the phone, and the end marked 'line' is pointing towards the line.

So the setup would be (from the wall) 600 series socket -> line -> filter -> phone. See the below diagram (I have never made any claim to be an artist :p )

[Danielk]

Where do i put the Modem cable then?

[Anne1]

Hi Danielk,
you've said that you are currently using dial up. I assume that you are going from dial up to adsl. If you only have one available phone socket, you can get an adsl splitter, which will allow you to 'split' your incoming line into filtered (which goes to your phone) and unfiltered (which goes to your ADSL modem)

You may need to buy a 600 series male socket which has the male 'prongs' on one side and a female RJ12 on the other (available at Tandy etc) - you then can run a male-male RJ12 lead between the 600 series socket and the splitter, and then 2 short (depending on the distances needed to be covered) leads between the splitter and the phone and the splitter and the modem.

[Danielk]

http://img141.imageshack.us/img141/5918/untitled4qa1.jpg

What about like this? yea Sucky Drawing!!Sorri
Could i use a DSL 600 Series Splitter/Filter?
Like this http://www.dse.com.au/cgi-bin/dse.storefront/4450a4b601b4f4082741c0a87f9c06f0/Product/View/F2433

So can i have it like, HomePhone Socket going into one side of the filter/Splitter, Then the Phone wall Socket goes into the other and then finally the Cable from the modem into the RJ12 Port onto the Filter/Splitter?

[Anne1]

yep, that looks ok - the filtered part is the 600 series part of the plug - which is what you need - the phone line has to be filtered, not the adsl part. The ADSL line has the modular connection, so this is obviously the 'unfiltered' part.

One thing you may not be aware of (just going off your diagram) is that the majority of ADSL modems are external modems. There are internal modems, but I have never tried one, so I couldnt tell you about the quality or customisation available with them. I couldnt even tell you if they are available in Australia, as I have never seen one, but would highly recommend an external modem.
So you would go (from the splitter) splitter -> phone cord -> modem. Then from the modem it goes modem -> ethernet or usb (depending on your model of modem) -> computer. The external modem requires an external power source (another power point!!)

And dont worry about your drawings - I've done a lot worse :p

[Danielk]

Ok kool,
Would it matter if my brother has Foxtel upstairs in a different room?

[Anne1]

Only thing is your brother (or you could do it and he wouldn't even notice!!) will have to install a line filter if the foxtel service utilises the phone line (see here (http://www.foxtel.com.au/digital_1290.htm#1875) ) - if it is via satellite there shouldnt be a problem (we only get the satellite service in the bush, so I cant say I've ever fiddled with the phone connected services)

[Danielk]

Currently he uses a RJ11 Double Adaptor, Hes got a Home phone upstairs but its on the same line.
Arghhh!

[Anne1]

Looks like you'll have to go around the house checking, as every device that is connected to the same phone connection that your ADSL modem will be on will have to be filtered to stop the phone signal interfering with your ADSL signal. If you do have more than 3 devices connected it is recommended that you have a central filter installed (this is a job for a professional) - this filters the signal at a central point, and you connect your ADSL modem to the unfiltered part, and every other device (including dial up modems, fax machines, ordinary phones and foxtel) gets connected to the filtered part.
I know its a pain, but the filtering will give you the best signal possible on your ADSL, and without it you will suffer from drop-outs and unreliability.