XM1240S AT Command Reference Manual
No. XM1240S-A00-106
xmodus swiss GmbH
21 / 46
4. S-REGISTERS
The S-Registers are summarized in Table 4-1 along with their default values;
registers denoted with an “*” are stored in the user profile by entering the AT&W
command. These profile may be loaded at any time by using the ATZ command.
4.1 ATSn
Read / Write S-Register
The isdn-modem selects an S-Register, performs an S-Register read or write
function, or reports the value of an S-Register.
n=v
= Sets S-Register n to the value v.
n?
= Reports the value of S-Register n.
If the number “n” is beyond the range of the S-Registers available, the modem will
return the ERROR message. The value “v” is “MOD”ed with 256. If the result is
outside the range permitted for a given S-Register the values will still be stored, but
functionally the lower and higher limits will be observed. Input and output are always
in decimal format. Note that some S-Registers are read-only.
In some cases, writing to the S-Registers will appear to be accepted but the value will
not actually be written.
4.2 FACTORY DEFAULTS
The factory default values are stored in ROM and are loaded into the active
configuration at power up or by the ATZ command. In addition, the designated default
profile (stored by AT&W) is subsequently loaded, and may change some of the
factory default values.
The defaults shown are those used by xmodus as the factory profile. The default
values shown in Table 4-1 may vary by modem firmware configuration. Consult the
MCU firmware release notes for exact configuration.
The factory default values may be loaded at any time by entering the AT&F
command.
