User's Guide Modem 56

S Registers
Page 211
ATS6 Dial Tone Wait Time
S Register 6 determines how long the modem will wait for a dial tone after going off-hook and
before dialling.
This register contains a value indicating the number of seconds the modem will wait for a dial
tone. This provides slow telephone exchanges the opportunity to apply a dial tone to the line
before the modem attempts to dial.
If the W dial modifier is included in the phone number being dialed, the value in S Register 6 will
be ignored, unless the X2, X4, or X5 commands have been issued.
Examples
ATS6=5 Wait five seconds for a dial tone before dialling.
Default
4
See Also
D command Dial
W dial modifier Wait
X command Extended Response Codes
Range
4-7