ZyXEL Communications P-2602 manual Connecting a Pots Splitter, Telephone Microfilters

P-2602H(W)(L)-DxA Series User’s Guide

AP P E N D I X B

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 197 Connecting a POTS Splitter

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

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

3Connect 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.

Appendix B Splitters and Microfilters 339