S Registers; Setting S Register Default Values; Modifying An S Register; Reading An S Register - Compaq 244100-005 - Deskpro 2000 - 16 MB RAM White Paper

Compaq V.90 Integrated Modem Commands

S Registers

Setting S Register Default Values

The S register default values function reliably under most circumstances. However, these values
may be modified if necessary.
For example, it may take an especially long time to get a dial tone in your office, so you may
choose to reset S7 for a longer wait time.

Modifying an S Register

You can modify or change the value of an S register from Command Mode (Terminal Mode) or
from a standard data or fax communication application. For example:
ATS11=70 ,
Type
This sets S11 to a value of 70.
If you then enter AT = 95, it resets S11 to a value of 95 since the modem remembered that
S11 was the last register referenced.
If you enter an
and the modem changes the value of
ATS0 = 3 and ATS = 3.

Reading an S Register

To read the contents of a given S register in the Terminal Mode (Command Mode), type ATSn?
(where n is the number of the register), then press Enter.
When modifying a register, the modem also remembers the location of the last inquiry. For
example, the following sequence of commands display the contents of the S11 register:
ATS11?
AT?
When you use an S? with no value, the register number defaults to zero and the modem responds
with the value of S0 (for example
ECG021/1298
then press Enter.
= command with no parameter (value), the register number defaults to zero
S
This command displays the value of S11.
This command also displays the value of S11.
ATS?
Therefore, the following commands are equivalent:
S0.
).
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