You need an ADSL Microfilter (or ADSL splitter) plugged into every piece of equipment on the telephone line. So if you have 2 wall sockets, you need 2 filters.
What is an ADSL Micofilter (ADSL splitter) and why do I need one.
With Broadband, your telephone line is split into two halves, operating at two different frequencies. One half for the normal voice calls / Fax calls at low frequency, and the other half for broadband data transmission at high frequency.
An ADSL filter should be fitted to the broadband line which will prevent the two halves from interfering with each other.
There are two sockets on the filters. One for a phone, and the other for broadband. The Broadband socket contains a "High Pass" filter which filters out the low voice/fax frequency, and the Phone socket on the filter contains a "Low Pass" filter which filters out the high broadband frequency.
What happens if equipment is not connected through an ADSL Microfilter ?
If equipment is not connected through an ADSL Microfilter then the ADSL signal will interfere with voice calls, and voice calls will interfere with the ADSL and either prevent the ADSL connection form working altogether, or at least will cause intermittent loss of connection. The same problems will arise if a faulty ADSL filter is connected.
How should the ADSL Microfilter (ADSL Splitter) be installed.
You need an ADSL Microfilter (or ADSL splitter) plugged into every piece of equipment on the telephone line. So if you have 2 wall sockets, you need 2 filters.
What does an ADSL Microfilter look like.
There are 3 types os ADSL Microfilter
1. Compact type.
2. Trailing lead type.
3. Integrated Master socket type.
This type of socket is rarely used. The filter is integrated into the BT master wall socket (NTE5 box). Installation by BT engineer only.
How can I obtain more ADSL Microfilters.
