S Registers; Setting S Register Default Values; Modifying An S Register; Reading An S Register - HP Compaq Presario,Presario 1234 Brochure

Compaq Global Mini PCI 56k (V.90) Modem by 3Com

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
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 = command with no parameter (value), the register number defaults to zero
and the modem changes the value of

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
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:
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.,
0203-0799-A
, then press
This sets S11 to a value of 70.
This command displays the value of S11.
This command also displays the value of S11.
).
Therefore, the following commands are equivalent:
.
24
White Paper