Telephone Microfilters; Hardware Connections; Figure 5 Connecting A Microfilter - ZyXEL Communications P-660H-TX V2 - VERSION 3-40 User Manual

2 Connect the side labeled "Modem" or "DSL" to your ZyXEL Device.
3 Connect the side labeled "Line" to the telephone wall jack.

1.5.2 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 use of a telephone microfilter is optional.
1 Locate and disconnect each telephone.
2 Connect a cable from the wall jack to the "wall side" of the microfilter.
3 Connect the "phone side" of the microfilter to your telephone as shown in the following
figure.
4 After you are done, make sure that your telephone works. If your telephone does not
work, disconnect the microfilter and contact either your local telephone company or the
provider of the microfilter.

Figure 5 Connecting a Microfilter

1.6 Hardware Connections

Refer to the Quick Start Guide for information on hardware connections.
P-660H-Tx v2 User's Guide
Chapter 1 Introducing the ZyXEL Device
35