ADTRAN Express XRT manual Internal Analog Modem Application, Connecting an Internal Analog Modem

Chapter 3. Installing an Analog Modem

COM	Rear View
Port
	of PC
RS-232 Cable	Dial Line Jack Internal Analog Modem
	RJ-11 to RJ-11
	Telephone Cable

AC Outlet

			OFF
			ON
POWER	RS232	MODEM	2	1	ISDNU

RJ-11 to RJ-11

Telephone Cable

RJ-45 to RJ-45

Cable

NT1

ISDN Telephone

Wall Jack

AnalogTelephone

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.

36 Express XRT User Guide 61202.153L3-1