ZyXEL Communications Prestige 645R - Manual (Page 33)

Prestige 645 ADSL Internet Access Router
Hardware Installation & Setup 2-3
Figure 2-4 Connecting the Microfilter) between the wall jack and your telephone(s). The micro filters act as
low pass filters (voice transmission takes place in the 0 to 4KHz bandwidth).
Step 2.
Connecting a computer to the Prestige 10/100M LAN port
Be careful not to plug a RJ-11 connector into the RJ-45 port.
Ethernet 10Base-T/100Base-T networks use Shielded Twisted Pair (STP) cable with RJ-45 connectors that
look like a bigger telephone plug with 8 pins. The auto-sensing Ethernet LAN port enables you to use either
a crossover Ethernet cable or a straight-through Ethernet cable to connect your device to either a computer
or external hub. In other words these ports automatically adjust according to the type of cable so that either
straight-through Ethernet cable or crossover Ethernet cable may be used.
Step 3.
Connecting the power adapter to your Prestige
Make sure that you use a P/N DV-121AACS (rated 12VAC
1.0A) or equivalent power supply.
Connect the power adapter to the port labeled POWER on the rear panel of your Prestige.
2.3 Additional Installation Requirements
In addition to the contents of your package your computer must have a properly installed and enabled
Ethernet 10Base-T/100Base-T NIC.
2.4 Connecting the POTS Splitter
You may purchase an optional POTS splitter for use with the Full Rate (G.dmt and ANSI T1.413)
standards. 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 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.
A telephone splitter can be installed as shown in the following figure.