Apple Express Fax/Modem - Manual (Page 136)

S6 Initial blind dialing wait
2 2:255 Seconds
The S6 register determines the number of seconds your modem waits
between the time it takes the telephone off-hook and when it actually
begins dialing. If the modem is not blind dialing, this register is ignored.
S7 Carrier wait
50 1:255 Seconds
The S7 register determines how many seconds the modem waits for a
carrier signal from a remote modem after the dial command line is
executed, or when answering an incoming call. If your modem does not
receive a carrier tone from the remote modem in the specified amount
of time, it hangs up and sends the NO CARRIER message.
S8 Pause time
2 0:255 Seconds
The S8 register determines the delay time for each comma (,)
encountered in the dial command line during the execution of the
D (dial) command.
S9 Carrier detect response time
6 1:255 1/10 second
The S9 register determines how long the carrier must be present before
being recognized by the modem.
S10 Disconnect timing
14 1:255 1/10 second
The S10 register allows you to specify how long an interruption is
necessary before the modem interprets the disruption as a loss of carrier
and hangs up.
If you enter 255, the modem ignores carrier detect status.
S11 Duration and spacing for DTMF dialing
95 50:255 Milliseconds
Register S11 is preset and should remain unchanged to ensure correct
dialing.
124 A P P E N D I X B