Toshiba TECRA A2 User Manual page 206

S-registers
S8 Comma pause time
S11 DTMF dialing speed
S12 Escape guard time
D-4
This register sets the time, in seconds, that the modem must
pause when it encounters a comma (,) in the dial command string.
In some countries/regions, S8 will set both wait before dialing and
comma pause time.
Range:0-255
Default:2
Units:seconds
This register determines the dialing speed which is prefixed for
each country/region.
Range:50-255
Default:95
Units:.001 seconds
This register sets the value (in 20 millisecond increments) for the
required pause after the escape sequence.
Range:0-255
Default:50
Units:.02 seconds
User's Manual