Furuno FELCOM 70 Operator's Manual page 157

[n]
A T S 2 5
=
sets delay before examining DTR (108/2) after dialing and when online with a
mobile-to-net call.
Range: 0-255 hundredths of a second.
<n>
A T S 2 5
=
sets delay value.
;
A T S 2 5 ?
displays current delay value.
A T S 2 5 5
=
Default.
R
R
R
sets delay to 5 (corresponding to 50 milliseconds).
R
6. DATA COMMUNICATION
6-67