Simple Filter Question

Just wiring up my old mans place after he finally decided to get BB!! The phone set up is a bit of a pain. Am i correct in saying the the router/modem can connect direct to the BT master socket (not through a splitter) providing the phones behind it are connected through a filter? Or does the modem have to go through a filter as well?

TY

It needs a filter as well.
Unless you have a special filtered master socket fitted by BT..if he's got 1 he'll know about it!

Despite what others have said, the router or modem does not need to go through a filter. The reaason for the filter is to keep ADSL signal out of phones. Usually, however it is convenient to go through a filter, because the filter serves as an adapter between the BT phone socket and the rj11 connecter used by ADSL.

u sure? ... this tutorial made me think u didnt need it.

http://usertools.plus.net/tutorials/id/13

If he's using a phone on the master then yes, other wise no.

Even if he's using a phone through the master then he doesn't need to connect the modem/router through the filter, although obviously in this case it's probably more convenient given that most filters also provide a socket for a modem.

The need for a filter on the modem is a common myth happily promoted by the manufacturers and retailers to sell more filters...

You're fine connecting the modem directly. Just make sure you get the correct type of RJ-11 to BT cable as some patch the wrong pair of wires.

Bllx - the modem does NOT need a filter of any sort.

I thought the poster was chicken_stu, not bllx?

The ADSL output on filters doesn't go through any filtering (it's wired straight through), so you don't need a filter. If you do fit one, it's unlikely to make any difference, as long as you connect the modem/router to the ADSL output.

In reply to:

---

it's unlikely to make any difference

---

... except to your bank balance. The going rate for a decent filter on the high street seems to be around

In reply to:

---

The going rate for a decent filter on the high street seems to be around

PlusNet MaxDSL
I used to have a handle on life, but it broke.

Just to give the corrects facts one more vote.

An ADSL modem/router does NOT need a filter. Admittedly a filter is handy as it will ensure the correct connection, but if you open a filter up and trace out the pcb, you will see that the modem RJ-11 connection - which is the middle two wires/contacts is connected to contacts 2 & 5 of a 6-way BT connector.
It is for this reason that simply crimping a BT plug on one end, and a RJ-11 on the other of a piece of flat phone cable will NOT give the correct connections. Whereas a proprietory cable with BT on one end and RJ-11 on the other,sold for conecting a modem, any type - Analoge or ADSL - will work.

Don't waste money on "posh" ones, either.