Telephone Microfilters; P650Hw With Isdn; Figure 2-4 Connecting A Microfilter - ZyXEL Communications P650HW User Manual

Prestige 650HW ADSL Router

2.4.2 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.
2.5

P650HW With ISDN

This section relates to people who use their P650HW with ADSL over ISDN (digital telephone service)
only. The following is an example installation for the P650HW with ISDN.
2-6

Figure 2-4 Connecting a Microfilter

Hardware Installation and Initial Setup