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USRobotics V.34 User Manual

Page 178

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COURIER HIGH SPEED MODEMS

Synchronous Operations F-13

3. Set the voice/data switch to option 9, so that the modem

executes the stored command string when you press the
switch. Type the following:

ATS32 = 9

NOTE: If you usually use the voice/data switch for another
purpose, you can include the execute stored command
option (S32 = 9) in the stored command string. However,
the total number of characters in the string may not exceed
30.

If S32=9 is used with the stored command string, it over-
writes any other S32 option. Once the communication
session is over, you will have to reset S32 if you want to
select another option.

4. Press the voice/data switch when you want to connect with

the synchronous Host computer. You need not have your
communications software loaded at the time.

5. After the call, restore the modem to asynchronous oper-

ations by powering it off and on again.

Answering

To configure the modem for Answer mode using the voice/data
switch, follow the instructions in the previous section,

Dialing

Out, but with these modifications:

Insert S0 = 1 in the stored command, Step 2. This sets
the modem to Auto Answer.

Omit the Dial string shown in the same step (DT and
phone number).

If you don't wish to use a stored command and the voice/data
switch, send the modem the appropriate configuration string,
ending with &M1. The following command adapts the dial-out
command example. Note again that all non-default settings
follow the &F command.

AT &F S0=1 &X1 &M1

The modem responds automatically to an incoming call, enters
synchronous mode and, in this case (because it is set to &X1),
waits for synchronous timing signals from your DTE.