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MT3334ZDX/V Owner's Manual
14
TR
Terminal Ready. When TR is lit, the MultiModemZDX can answer an
incoming call. This signal (TR or DTR) provides a means for the terminal
or computer to control the MultiModemZDX's connection to the
communications channel. A high DTR signal is required by the
MultiModemZDX to be able to communicate. The state of the TR LED
matches that of the DTR circuit on pin 20 of the RS232/V.24 interface.
EC
Error Correction. This LED is lit when the modem is set for V.42 error
correction, and flashes on and off when data compression is activated.
FX
Fax. This LED is lit when the modem is connected in Fax mode.
Is Your MultiModemZDX Ready for Use?
As soon as you have connected power to the modem, if you’re an
experienced modem user, you may simply want to check your modem’s
settings for data compression, error correction, and so on. You may find
that you can get moving quite quickly if you just issue the
AT&V<cr>
command. This command lists how your modem is currently configured.
If you come across a setting you’re unsure of, refer to Chapter 3 of this
manual for AT command and S-Register explanations and defaults. If
you’re a novice, please continue to the next sections of this chapter.