5634BIF User’s Manual
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Your modem has S-registers that affect various operating characteristics, let you obtain
information about the modem, and let you test the modem. Each S-Register has a factory-
set value, which you can read or change to fit your particular requirements. Chapter 6
explains how to read and change S-Register repeatedly. A sequential list of S-Register is
also provided.
6.1 Reading an S-Register value
To read the current value of an S-Register :
1.
Type
ATSr?
from the command mode, where
r
is an S-Register number.
2.
Press the Enter key. The modem responds with decimal value of the S-Register , in
three-digit form, followed by
OK.
To read values from more than one S-Register :
1.
Type
ATSr?Sr?
from the command mode and press the Enter key. For example, to
read the value of Register
S0
(auto-answer after the number of rings specified by this
S-Register value) and
S1
(count the number of incoming rings), type
ATS0?S1?
from
the command mode.
2.
Press the Enter key. The modem displays the first S-Register value, a carriage return,
the next S- Register value, a carriage return, and
OK
(or
0
).
6.2 Changing an S-Register value
To change an S-Register value, use the Sr=n command, where r is an S-Register number
and n is the new value you want to assign to the S-Register. For example, to have the
modem auto-answer incoming calls after the third ring:
1.
Type
ATS0=3
from the command mode.
2.
Press the Enter key. The modem responds with
OK
or
0
to show it has executed your
command and changed the S-Register value. The value remains in effect until the
modem is turned off and on, or reset. The modem then revert to its default S-Register
values (in this case, Register
S0
returns to a value of 0, disabling auto answer).
6.3 S-Register descriptions
Table 6-1 summarizes the modem S-Register, their default values, and their functions.
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