Ouvi dizer que o DSL impede que alguns itens que usam linhas telefônicas funcionem corretamente, como alarmes residenciais.
Em primeiro lugar, é possível usar um aparelho de fax na mesma linha que um modem e uma conexão DSL? E, nesse caso, o aparelho de fax deve ficar atrás de um filtro DSL ou não?
Um aparelho de fax usa as mesmas freqüências que um telefone analógico usa, então ele deve ser conectado exatamente da mesma maneira: atrás do divisor.
O divisor filtra as freqüências mais altas de ADSL para aqueles dispositivos, que de outra forma poderiam ver interferência e deixar de funcionar ou mesmo interferir com seu sinal ADSL.
Sim, deveria.
Generally speaking the terms "micro-filter", "splitter" and "ADSL filter" mean the same thing.
When your telephone line is ADSL enabled it is able to carry information on different frequency ranges: ADSL uses the higher frequencies to transmit data, whilst voice uses the lower frequency band.
Although you will still be able to use your telephone as normal once your line is activated, the transmission of adsl data on the line will cause interference.
In order that the adsl data does not interfere with the normal voice data (and vice-versa), you need to ensure you install a filter on each device that uses the lower frequencies. These devices are telephones, fax machines, answer phones, sky boxes.
Fonte Filtros ADSL & Divisores
A microfilter is a device that allows broadband to work at the same time as your telephone service. Without microfilters you may get problems with your BT broadband or experience noise on your telephone line.
Normally, you'll need a microfilter for every telephone socket in your home where you've got some kind of telephony or broadband equipment plugged in. This equipment includes:
- Your BT Home Hub, or another type of broadband router or modem
- Telephones
- Answering machines
- Digital TV boxes (for example, Sky boxes)
- Fax machines
- Alarm systems