ZyXEL Communications P-660 series Guía de usuario descargar pdf (Pagina 247)

P-660R-F1 Series User’s Guide 247

APPENDIX E

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 161 Connecting a POTS Splitter

1 Connect the side labeled “Phone” or “TEL” 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.

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.

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ZyXEL Communications P-660 series Guía de usuario Pagina 247