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U.S. Robotics I-modem Command Reference

Analog Synchronous Applications • Page 16-9

commands are no longer necessary and are ignored. For dialing instructions, refer to the

manual included with your communications software.

Hanging Up

Since the I-modem cannot accept commands once it is connected in synchronous mode,

you cannot use the ATH (hang-up) command or the +++ escape code.

The only way for the I-modem to disconnect is to drop its Data Terminal Ready (DTR)

signal. Either power off the I-modem or use your communications software (check the

software userÕs manual for instructions).

Returning to Asynchronous Mode

Once you've completed a synchronous session, you can switch back to asynchronous

mode by ßipping DIP switch

1 OFF and then ON. The I-modem cannot switch between

synchronous and asynchronous modes while a call is connected.

V.25bis Reference

Note The commands and result codes described in this section are sent and rec-

ognized by your V.25bis communications software. You are not expected to

send them to the I-modem the way you do with AT commands.

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US Robotics COURIER Manual de usuario Pagina 194