Compaq Global Mini PCI 56k (V.90) Modem by 3Com
24
White Paper
0203-0799-A
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:
1. Type
ATS11=70
,
then press
Enter.
This sets S11 to a value of 70.
2. 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.
3. If you enter an
S
= command with no parameter (value), the register number defaults to zero
and the modem changes the value of
S0.
Therefore, the following commands are equivalent:
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 displays the contents of the S11 register:
ATS11?
This command displays the value of S11.
AT?
This command also displays the value of S11.
When you use an S? with no value the register number defaults to zero and the modem responds
with the value of S0 (i.e.,
ATS?
).
