Multitech MT2834MR Owner's Manual page 42

PN 88300150
S18
Automatic Leased Line Restoral
Unit: 1 min.
Range: 10-255 min.
Default: 30 min.
Description: When the MT2834MR is in the dial back-up mode of operation, it will periodically check the
leased line to see if it's operational and try to restore the leased line if possible. The
frequency of restoral attempts is defined by the contents of S-Register S18.
The default for S18 is 30 minutes and can be set in one minute increments from 10 to 255
minutes. Setting the restoral frequency to a value less than 10 minutes causes excessive
breaks in the dial-up operation.
S19
Dial-Back Timer
Unit: 1 min.
Range: 0-255 min.
Default: 1 min.
Description: S19 is a timer that starts when the leased line goes down and the modem has determined
that the line is bad. When the set time is reached, the originate modem dials the answering
modem. The answering modem uses this same timer to determine when it will accept the
ring.
S24
PBX/CBX Disconnect Drop Time for DSR/CTS/CD
Unit: 50 mSec.
Range: 0-255
Default: 20
Description: Some PBX and CBX phone systems require the modem's DSR, CTS, and/or CD signals to
behave in a certain manner when calls are disconnected. The MT2834MR's &R, &S, and
&C commands cause the modem to drop these signals for a specified time period upon
disconnect, and then bring the signal(s) up again.
S24 defines the length of time that the signals drop. The default setting of 20 results in a
one second drop time, which is what most PBX/CBX systems with this requirement need.
S25
DTR Dropout Time
Unit: 100 mSec.
Range: 0, 1 through 255
Default: 0
Description: S25 defines the amount of time that DTR must be dropped before the modem disconnects.
Normally, a disconnect occurs when DTR is dropped for 50 milliseconds or more.
The S25 unit value for zero is the default value of 50 mSec. For values from 1 through 255,
the unit value is 100 mSec.
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