Toshiba PSA20 User Manual page 205

S4 Response formatting character (user defined)
This register determines the ASCII value used as the line feed character.
The modem uses a line feed character in command mode when it
responds to the computer.
Range: 0-127, ASCII decimal
Default: 10 (line feed)
Units: ASCII
S5 Command line editing character (user defined)
This register sets the character recognized as a backspace and pertains
to asynchronous only. The modem will not recognize the backspace
character if it is set to a value that is greater than 32 ASCII. This
character can be used to edit a command line. When the echo command
is enabled, the modem echoes back to the local DTE the backspace
character, an ASCII space character, and a second backspace character.
This means a total of three characters are transmitted each time the
modem processes the backspace character.
Range: 0-127, ASCII decimal
Default: 8 (backspace)
Units: ASCII
S6 Wait before dialing
This register sets the length of time, in seconds, that the modem must
wait (pause) after going off-hook before dialing the first digit of the
telephone number. The modem always pauses for a minimum of two
seconds, even if the value of S6 is less that two seconds. The wait for
dial tone call progress feature (W dial modifier in the dial string) will
override the value in register S6. This operation, however, may be
affected by some ATX options according to country/region restric-
tions. In some countries/regions, S6 will set dial tone detect time.
Range: 3-255
Default: 3
Units: seconds
Appendix D
D-3