EXM-31 Hardware Reference
Page 42
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S9
Carrier Recovery Time
Sets the time, in tenths of a second, that the carrier must be present before the modem
considers it valid and turns on RLSD. As this time is increased, there is less chance to
detect a false carrier due to noise from the telephone line.
Range: 1 - 255
Default: 006 (0.6 seconds)
Units: 0.1
seconds
S10
Lost Carrier Hang Up Delay
Sets the length of time, in tenths of a second, that 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 a 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.
Range: 1 - 255
Default: 014 (14 seconds)
Units: 0.1
seconds
S11
DTMF Dialing Speed
Range: 50 - 255
Default: 095
Units: 0.001
seconds
S12 Guard
Time
Defines the maximum period, in 2-hundredths of a second, allowed between
consecutive asynchronous escape characters (+) for the escape sequence to be
considered valid.
Range: 0 - 255
Default: 050 (1 second)
Units: 0.02
seconds
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