Zyxel-communications P-660HW-T v2 Manual do Utilizador descarregar pdf (Página 317)

P-660HW-T v2 User’s Guide

Appendix J Splitters and Microfilters 317

APPENDIX J

Splitters and Microfilters

This appendix tells you how to install a POTS splitter or a telephone microfilter.

Connecting a POTS Splitter

When you use the Full Rate (G.dmt) ADSL standard, you can use a POTS (Plain Old

Telephone Service) splitter to separate the telephone and ADSL signals. This allows

simultaneous Internet access and telephone service on the same line. A splitter also eliminates

the destructive interference conditions caused by telephone sets.

Install the POTS splitter at the point where the telephone line enters your residence, as shown

in the following figure.

Figure 178 Connecting a POTS Splitter

1 Connect the side labeled “Phone” to your telephone.

2 Connect the side labeled “Modem” or “DSL” to your ZyXEL Device.

3 Connect the side labeled “Line” to the telephone wall jack.

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.

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Zyxel-communications P-660HW-T v2 Manual do Utilizador Página 317