HE863 family AT commands reference guide
80377ST10083a Rev.6 – 2012-11-12
Reproduction forbidden without written authorization from Telit Communications S.p.A.- All Rights Reserved. Page 22 of 229
3.3. Storage
3.3.1. Factory Profile And User Profiles
The Telit wireless modules stores the values set by several commands in the internal non
volatile memory (NVM), allowing to remember this setting even after power off. In the NVM
these values are set either as factory profile or as user profiles: there are two customizable
user profiles and one factory profile in the NVM of the device: by default the device will
start with user profile 0 equal to factory profile.
For backward compatibility each profile is divided into two sections, one base section which
was historically the one that was saved and restored in early releases of code, and the
extended section which includes all the remaining values.
The &W command is used to save the actual values of both sections of profiles into the
NVM user profile.
Commands &Y and &P are both used to set the profile to be loaded at startup. &Y instructs
the device to load at startup only the base section. &P instructs the device to load at startup
the full profile: base + extended sections.
The &F command resets to factory profile values only the command of the base section of
profile, while the &F1 resets to factory profile values the full set of base + extended section
commands.
The values set by other commands are stored in NVM outside the profile: some of them are
stored always, without issuing any &W, some other are stored issuing specific
commands(#VAUXSAV, #SKTSAV); all of these values are read at power-up.
The values set by following commands are stored in the profile base section:
DSR (C107) OPTIONS: &S
DTR (C108) OPTIONS: &D
DCD (C109) OPTIONS: &C
RI (C125) OPTIONS: \R
DEFAULT PROFILE: &Y,&P
S REGISTERS: S1
The values set by following commands are stored in the profile extended section and they
depend on the specific AT channel instance:
+CREG, +CLIP, +CLIR,
+CCWA, +CUSD, +CAOC,
+CSSN, +CMEE, +CGREG,
+CMGF, +CSDH, #QSS,
#MWI, #SKIPESC, #STIA
#CODEC, +XTESM
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