ADTRAN XRT - Manual (Page 49)

61200.153L1-13 Express XR/XRT Quick Start Guide 37
Chapter 3. Installing an Analog Modem
INTERNAL ANALOG MODEM APPLICATION
In order to connect an internal analog modem to the Express
XRT the following items are necessary:
• Internal analog modem
• RJ-11 to RJ-11 telephone cable
Figure 3-7 shows how to connect an internal modem to the
Express XRT.
ISDNU
OFF
ON
2 1 MODEM RS232 POWER
1 2 3 4
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-11
Telephone Cable
RJ-11 to RJ-11
Telephone Cable
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
configured independently. See the manufacturer's documenta-
tion for internal analog modem configuration.