Table of Contents
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82
C
6: T
HAPTER
EC HN ICA L
R
EFERENC E
Table 6 - 3
Register
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
Default
Function
0
Test timer for &T loopback
testing. Sets the time in
seconds of testing before the
modem automatically times
out and terminates the test.
When set to 0, the timer is
disabled. Valid range is
1-255.
0
Sets duration, in minutes, for
inactivity timer. This timer
activates when there is no
data activity on the phone
line; at time-out the modem
hangs up. S19 = 0 disables
the timer.
0
Reserved
10
Sets length, in 10-millisecond
units, of breaks sent from
the modem to the computer;
applies to MNP or V.42
mode only.
17
Stores ASCII decimal code for
the XON character.
19
Stores ASCII decimal code for
the XOFF character.
0
Reserved
20
Sets duration, in hundredths
of a second, of a true DTR
drop. Prevents modem from
interpreting random glitches
as DTR loss. (Most users will
use the default; this register
is useful for compatibility
with older systems and
operating software.)
0
Reserved
0
Bit-mapped register setup. To
set the register, see
instructions for S13. Refer to
Table 6-6.
0
Eliminates the V.32 answer
tones for a faster connection.
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Troubleshooting
