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61202.153L3-1 Express XRT User Guide 27

Chapter 3

Installing an Analog Modem

An external or internal analog modem can be connected to the Ex-

press XRT to access an Internet provider, BBS, or host server that

does not support ISDN.

EXTERNAL ANALOG MODEM APPLICATION

In order to connect an external analog modem to the Express XRT,

the following items are necessary:

• External analog modem

• RS-232 serial cable

• RJ-11 to RJ-11 telephone cable

Incoming calls must use ISDN phone number 2 for external analog ap-

plications.

In addition to the RS-232 cable connecting the Express XRT to the

PC, a separate RS-232 cable is required to connect an external an-

alog modem to the Express XRT. This RS-232 cable is not sup-

plied.

Figure 3-1 on page 28 illustrates an external analog modem con-

nected to the Express XRT. This setup requires only one PC COM

port, and supports DTE rates of up to 115.2 kbps.

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ADTRAN XRT Guía de usuario Pagina 41