ZyXEL Communications Prestige 642, Руководство пользователя

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Prestige 642 ADSL Modem
2-3
Hardware Installation & Setup
¾
No parity, 8 Data bits, 1 Stop bit.
¾
Flow Control set to None
After the Prestige has been successfully connected to your network, you can make future changes to the
configuration through telnet application.
2.4 Connecting the POTS Splitter
This is for the P642’s following the Full Rate (G.dmt) standard only. One major difference between ADSL
and dial-up modems is the need for a telephone splitter. This device keeps the telephone and ADSL signals
separated, giving it the capability to provide simultaneous Internet access and telephone service on the same
line. Splitters also eliminate the destructive interference conditions caused by telephone sets. The telephone
splitter has to be installed on the line at the point of entry to the residence.
Noise generated from a telephone in the same frequency range as the ADSL signal can be disruptive to the
ADSL signal. In addition the impedance of a telephone when off-hook may be so low that it essentially
shunts the strength of the ADSL signal. When a POTS splitter is installed at the entry point where the line
comes into the home, it will filter the telephone signals before combining the ADSL and telephone signals
transmitted and received. The issues of noise and impedance are eliminated with a single POTS splitter
installation.
The following user-friendly telephone splitter can be installed as shown in the following figure.
Figure 2-3 Connecting a POTS Splitter
Step 1.
Connect the side labeled “Phone” to your telephone.
Step 2. Connect the side labeled “Modem” to your Prestige.
Step 3. Connect the side labeled “Line” to the telephone wall jack.
Wall
Jack
Prestige
Modem
Line
POTS Splitter
Phone