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Chapter 3. Installing an Analog Modem
36 Express XRT User Guide 61202.153L3-1
Figure 3-7
Internal Analog Modem Application
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.
ISDNU
OFF
ON
21
MODEMRS232POWER
1234
RS-232 Cable
COM
Port
ISDN Telephone
Wall Jack
AnalogTelephone
Internal Analog Modem
Dial Line Jack
Rear View
of PC
AC Outlet
RJ-11 to RJ-11
Telephone Cable
RJ-45 to RJ-45
Cable
RJ-11 to RJ-11
Telephone Cable
NT1