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Synchronous Dialing Using AT Commands 16-9
Due to the nature of synchronous dialup, the Courier V.Everythin
modem auto answers only on the third or fourth ring.
5 Send
AT&M1
to have your modem enter synchronous mode, followed by
the number to dial Dial should be the last command before the Carriage
Return.
Example:
AT&M1DT5551234
Alternatively, you can combine all the previous commands into a
compound command, like this:
AT&F0B0&X0&N0S0=1&M1*V2=4DT5551234
This tells your modem to load the "no flow control" factory template
and then use the ITU answer sequence, making your modem the source
of timing signals, set a variable connection rate, auto-answer incoming
calls, switch to online synchronous mode after connection, and then dial
555 1234.
Dialing There are two methods of autodialing a stored telephone number: Yo
can have the modem dial the stored number either when it receives the
Data Terminal Ready (DTR) signal from your computer or at
power-on/reset
1 Store a telephone number to memory position 0 using the
AT&Z0=
n
command.
For example,
AT&Z0=T18475551111,
stores the telephone number 847
555 1111, and tone dial.
2 Follow step a or b, depending on the dialing method you choose.
3 Make sure DIP switch 10 is set to OFF to load settings from NVRAM.
For your modem to Command
Disable automatic answering.
ATS0=0
(Default)
Enable automatic answering.
ATS0=1
For the modem to dial when Type
a) It receives the DTR signal from your computer
ATS13.3=1&W
b) Modem is reset
ATS13.4=1&W