ZyXEL P-861H-G2 User Guide - Page 311
Appendix F, Splitters and Microfilters
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Prestige 861H Series User's Guide Appendix F 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 VDSL standard, you can use a POTS (Plain Old Telephone Service) splitter to separate the telephone and VDSL 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. 1 Connect the side labeled "Phone" to your telephone. 2 Connect the side labeled "Modem" to your Prestige. 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 VDSL transmissions take place in the higher bandwidth range, above 4KHz. A microfilter acts as a low-pass filter, for your telephone, to ensure that VDSL transmissions do not interfere with your telephone voice transmissions. The use of a telephone microfilter is optional. 1 Connect a phone cable from the wall jack to the single jack end of the Y- Connector. Appendix F Splitters and Microfilters 310