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Chapter 3. Installing an Analog Modem
AC Outlet
When using an internal analog modem and the Express XRT, two
COM ports are assigned on the PC. Both COM ports are config-
ured independently. See the manufacturer's documentation for
internal analog modem configuration.
Connecting an Internal Analog Modem
To connect an internal analog modem to the Express XRT, use the
following procedure:
1. Ensure the Express XRT is connected to the PC. See the section
Connecting the Express XRT on page 6 for detailed instructions.
2. Connect one end of the RJ-11 to RJ-11 telephone cable to the
telephone jack labeled 2 on the Express XRT. Positioned above
the jack is an illustration of a telephone above a modem.
3. Connect the other end of the RJ-11 to RJ-11 telephone cable to
the Dial Line or Line jack on the internal analog modem. See
the documentation for the internal analog modem to determine
which jack on the internal analog modem is the Dial Line or
Line jack.
36
COM
Port
Dial Line Jack
RS-232 Cable
OFF
ON
1
2
3
4
POWER
RS232
MODEM
RJ-11 to RJ-11
Telephone Cable
AnalogTelephone
Internal Analog Modem Application
Express XRT User Guide
Rear View
of PC
Internal Analog Modem
RJ-11 to RJ-11
Telephone Cable
RJ-45 to RJ-45
Cable
NT1
2
1
ISDNU
ISDN Telephone
Wall Jack
Figure 3-7
61202.153L3-1
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