
                UNIX & XENIX & Terminals & Others

     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.

     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 most cases the BPS should be 19,200  and CTS/RTS hardware
flow control.


    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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