User`s manual

U.S. Robotics I-modem Command Reference
Using the AT Command Set • Page 1-9
Setting Bit-Mapped S-registers
You can set bit-mapped S-registers using either bits or decimal values. While it may be
simpler for you to set the bits individually, I-modems display the S-register settings in
decimal form.
Using Bits
Turning individual bits on and off is the more direct way to set bit-mapped S-registers. To
do this, specify the S-register that you want to set, and then indicate which bits you want
to turn on (1) or off (0). For example,
ATS13 .0=1 .4=1 .5=1 <Enter>
turns on bits 0, 4, and 5 of S-register 13.
Using Decimal Values
An alternative way to set bit-mapped S-registers is by adding the decimal values of the bits
and entering the total. This example sets the same value as the one in Using Bits, above:
ATS13=49 <Enter>