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S1 0 Counts and stores number of rings coming in
S2 43 Redefines the ASCII code for the Escape code character
S3 13 Redefines ASCII code for Carriage Return
S4 10 Redefines ASCII code for Line Feed
S5 8 Redefines ASCII code for Backspace
S6 2 Sets number of seconds to wait for a dial tone.
The lowest possible value is 2.
S7 30 Sets number of seconds to wait for carrier
S8 2 Sets duration in seconds for the pause (comma) and the
pause between command re-execution for Repeat command.
S10 7 Sets duration in tenths of seconds to wait after loss
off carrier before hanging up.
S11 70 Sets duration and spacing, in milliseconds, of
touchtones. 50 is the minimum value.
S12 50 Defines guard time in 50ths of second for Escape code
sequence.
S16 0 Modem self-test:
0=Data mode (no testing) 1=Analog loopback
DIP Switches
============
1 Auto-answer suppressed DOWN
Modem answers on 2nd ring UP
2 Carrier detect on pin H-K DOWN
No carrier detect signal UP
(must be up for Plus/4!)
3 Indicate to computer speed of incoming call DOWN
Disable speed indicate UP
4 DTR (Data Terminal Ready) always on DOWN
DTR normal; computer controls DTR UP
NOTE: When you change a DIP switch setting, the new setting is initiated
when you plug in the modem. If the modem is already plugged in, initiate
the new setting by issuing the Zap command (ATZ).
Disabling Auto-Answer on 3-DIP model
====================================
The following text and program for disabling auto-answer on the (older)
3 DIP switch model of the 1670 is from John Iannetta 73510,2152.
The following BASIC program, when RUN, will create an
89 byte disk file. Anytime that the file is LOADed "FILENAME",8,1 it will
disable the auto-answer mode. The file is not to be RUN. In fact, it may
be used with an existing BASIC program in memory. The BASIC program will
not be corrupted by doing so. Testing was on a C-64.