COURIER HIGH SPEED MODEMS
Register | Default | Function | 
S0  | See DIP  | Sets the number of rings on which to  | 
  | Switch 5  | answer when in Auto Answer mode. S0=0  | 
  | 
  | disables Auto Answer, the same as DIP  | 
  | 
  | switch 5 ON (factory setting). S0=1  | 
  | 
  | enables Auto Answer and the modem  | 
  | 
  | answers on the first ring.  | 
  | 
  | NOTE: If DIP switch 5 is OFF and S0=0,  | 
  | 
  | Auto Answer remains disabled.  | 
S1  | 0  | Counts and stores the number of rings  | 
  | 
  | from an incoming call.  | 
S2  | 43  | Stores the ASCII decimal code for the  | 
  | 
  | escape code character. Default character is  | 
  | 
  | “+”. A value of   | 
  | 
  | escape code.  | 
S3  | 13  | Stores the ASCII decimal code for the  | 
  | 
  | Carriage Return character. Valid range is  | 
  | 
  | 0−127.  | 
S4  | 10  | Stores the ASCII decimal code for the Line  | 
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  | Feed character. Valid range is 0−127.  | 
S5  | 8  | Stores the ASCII decimal code for the  | 
  | 
  | Backspace character. A value of   | 
  | 
  | disables the Backspace key's delete  | 
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  | function.  | 
S6  | 2  | Sets the number of seconds the modem  | 
  | 
  | waits before dialing. If set to X2, X4, X6,  | 
  | 
  | or X7, the modem dials as soon as it  | 
  | 
  | detects a dial tone (fast dials). If there is  | 
  | 
  | no dial tone, the modem observes the  | 
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  | normal S6 timeout.  | 
S7  | 60  | Sets the number of seconds the modem  | 
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  | waits for a carrier. May be set for much  | 
  | 
  | longer duration if, for example, the  | 
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  | modem is originating an international  | 
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  | connection.  |