T
ECHNICAL
R
EFERENCE
S Registers
Note:
To change a setting use
ATSr
=
n
, where
r
is the register and
n
is a decimal value from 0
−
255 (unless otherwise indicated).
Register Default
Function
8-16
S16
0
Reserved
S17
0
Reserved
S18
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.
S19
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.
S20
0
Reserved
S21
10
Sets length, in 10-millisecond units, of breaks sent from the modem to the computer; applies to MNP or V.42 mode only.
S22
17
Stores ASCII decimal code for the XON character.
S23
19
Stores ASCII decimal code for the XOFF character.
S24
0
Reserved
S25
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.)
S26
0
Reserved
Summary of Contents for 3CP5613
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