S9 - Carrier Detect Response Time; S10 - Lost Carrier To Hang Up Delay; S11 - Dtmf Tone Duration - Ositech comm Trumpcard Data/Fax Modem User's Manual And Reference

Default
Sets the length of time to pause when the modem encounters the "Pause
During Dial" call progress feature, i.e., the comma (,).
S9 — Carrier Detect Response Time
Range
Default
Determines how long a carrier signal must be present before the modem
recognizes it as a carrier and turns on /RLSD. As this time is increased,
there is less chance to detect a false carrier due to noise from the telco
line.
S10 — Lost Carrier To Hang Up Delay
Range
Default
Sets the length of time the modem waits before hanging up after a loss of
carrier. This allows for a temporary carrier loss without causing the local
modem to disconnect. When register S10 is set to 255, the modem
functions as if carrier is always present.
The actual interval the modem waits before disconnecting is the value in
register S10 minus the value in register S9. Therefore, the S10 value must
be greater than the S9 value or else the modem disconnects before it
recognizes the carrier.
S11 — DTMF Tone Duration
Range
Default
Sets the duration of tones in Dual Tone Multifrequency (DTMF) dialling.
This value has no effect on pulse dialling.
S12 — Escape Code Guard Time
Range
Default
Sets the time delay required immediately before and after entering the
escape code. The time interval between the sending of the first and
second, or the second and the third escape code characters must be less
than the value of the guard time.
User's Guide and Reference
2
1-255 tenths of second
6 (0.6 seconds)
1-255 tenths of a second
14 (1.4 seconds)
50-255 milliseconds
95 milliseconds
0-255 fiftieths of a second
50 (1 second)
Modem Command Reference
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