Comtrol AT Commands for SmartACFL - Manual (Page 84)

Command Reference Manual
3-64 Conexant 100722A
3.3 S-PARAMETERS
The S-Parameters are summarized in Table 3-13 along with their default values; registers denoted with an '*' may be stored in
one of the two user profiles by entering the &W command. One of these profiles may be loaded at any time by using the Z
command. Registers or register fields quoted as “reserved” are reserved for current or future use by the firmware, or are
permanently overridden by PTT limitations. For the latter, control of the equivalent functionality is available with ConfigurACE
Call Progress and Blacklisting options.
All bit-mapped registers are read-only. The appropriate AT command which controls the relevant bits in the S-Parameter
should be used to change the value.
3.3.1.1 S - Read/Write S-Parameter
The modem selects an S-Parameter, performs an S-Parameter read or write function, or reports the value of an S-Parameter.
n Establishes S-Parameter n as the last register accessed.
n=v Sets S-Parameter n to the value v.
n? Reports the value of S-Parameter n.
The parameter n can be omitted, in which case the last S-Parameter accessed will be assumed. The S can be omitted for
AT= and AT?, in which case the last S-Parameter accessed will be assumed.
For example:
ATS7 establishes S7 as the last accessed register.
AT=40 sets the contents of the last register accessed to 40.
ATS=20 sets the contents of the last register accessed to 20.
If the number "n" is outside the range of the S-Parameters available, the modem will return the ERROR message. If the value
“v” is outside the range permitted for a given S-Parameter, the modem will return the ERROR message. Input and output are
always in decimal format. Note that some S-Parameters are read-only.
In some cases, writing to the S-Parameter will appear to be accepted but the value will not actually be written.
Due to country restrictions, some commands will be accepted, but the value may be limited and replaced by a maximum or
minimum value.
Minimum, maximum, and default values for S-Parameters may be altered with ConfigurACE.
3.3.2 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 is subsequently loaded, and may change some of the factory default
values. The designated default profile can be changed by entering the &Y command where n is one of the two possible user
profiles.
The defaults shown are those used by Conexant in factory profiles zero and one. These may be overwritten by the OEM with
ConfigurACE prior to placing the firmware in PROM. Minimum and maximum values may also be imposed by ConfigurACE in
response to country PTT requirements.
The default values shown in Table 3-13 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 &Fn command.