Telephone Microfilters; Figure 2-3 Connecting A Pots Splitter - ZyXEL Communications Prestige 642M series User Manual

strength of the ADSL signal. A POTS splitter will filter the telephone signals before combining the ADSL
and telephone signals transmitted and received. The issues of noise and impedance are eliminated with a
single POTS splitter installation.
A telephone splitter is easy to install as shown in the following figure.
Step 1. Connect the side labeled "Phone" to your telephone.
Step 2. Connect the side labeled "Modem" to your Prestige.
Step 3. Connect the side labeled "Line" to the telephone wall jack.
2.5

Telephone Microfilters

Telephone voice transmissions take place in the lower frequency range, 0 - 4KHz, while ADSL
transmissions take place in the higher bandwidth range, above 4KHz. A microfilter acts as a low-pass filter,
for your telephone, to ensure that ADSL transmissions do not interfere with your telephone voice
transmissions. . The purchase of a telephone microfilter is optional.
Step 1. Connect a phone cable from the wall jack to the single jack end of the Y- Connector.
Step 2. Connect a cable from the double jack end of the Y-Connector to the "wall side" of the
microfilter.
Step 3. Connect another cable from the double jack end of the Y-Connector to the Prestige.
Step 4.
Connect the "phone side" of the microfilter to your telephone as shown in the following figure.
Hardware Installation & Initial Setup
Prestige
Modem
Wall
Jack

Figure 2-3 Connecting a POTS Splitter

POTS Splitter
Line Phone
Prestige 642M Series ADSL Bridge
2-3