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Software Vault: The Gold Collection
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Software Vault - The Gold Collection (American Databankers) (1993).ISO
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UNIX
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1993-03-23
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UNIX & XENIX & Terminals & Other Similar Applications
The defaults for the modem are &C0 &D0, autoanswer OFF. For most PC
applications you set &C1 &D2. Unix and Xenix do not seem to be
standardized. Try combinations; (AT&F sets defaults)
AT&F AT&F&C1 AT&F&D2
AT&F&C1&D2 (some rare cases may want &D3 - see manual)
If the device cannot issue the init string to the modem each
time, finish the line with &W and it will be saved to NV ram so
the modem will power-up with that configuration.
AT&F&C1&W (example)
To set autoanswer to ON the command is S0=1 ATS0=1
Commands may be combined on one line, AT&F at the start, &W at the
end. The modem will also 'wake up' at the same speed, parity, bits, and
stop bit that you were using at that time the AT.....&W command was issued.
So always use the fastest (up to 19,200) that the modem and port support
when you do the AT...&W. CTS/RTS hardware flow control is default. The &K
command sets flow control (see the manual).
On some devices the &Sx and &Rx may need to be changed from default
(see manual).
Another default is E1 (command echo). Many systems prefer not to get
command echos, so E0 should be included in the string.
Systems which do not want reponses to commands or CONNECT responses,
include Q1 in the string (default is Q0 to echo responses). Q2 will let the
CONNECT reponses through, but inhibit command responses.
In working with one SCO Unix user these strings worked.
ANSWER modem: AT&F&C1E0Q1S0=1 (&W)
calling modem: AT&FQ1S0=0 (&W)
One Min-computer user reports this works:
ANSWER modem: AT&FE0&R1S0=1 (&W)
calling modem:AT&F&C1&R1 (&W)
The &W also saves the 'current' speed, parity, bits and stop bit, so
the modem will wake-up with those defaults.
The default for Zoom 'V' series modems is to use speed-buffering. This
means you set your port at 19,200 when you set the modem, and when you use
the modem. The modem takes care of modem-modem speed.
Don Hinds - Zoom Tech
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