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 4 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.
1.6.2Telephone MicrofiltersTelephone 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
1Locate and disconnect each telephone.
2Connect a cable from the wall jack to the “wall side” of the microfilter.
3Connect the “phone side” of the microfilter to your telephone as shown in the following figure.
4After 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.
42 | Chapter 1 Getting To Know Your ZyXEL Device |