Specifications

Command Reference
Rev 3.2 Oct.05 91
+CREG[=<n>]
+CREG?
Note: For GPRS data
registration status, see
+CGREG on page 72.
GSM network registration
For GSM CSD or voice connections, +CREG=<n> controls the presentation of
an unsolicited result code, which appears in one of several forms depending on
the value of <n> (or an error if no status is available):
• When <n>=0, no network registration unsolicited result codes are returned
(the default).
• +CREG: <stat> (registration status only) is returned when <n>=1 and there
is a change in the modem's GPRS network registration status.
• +CREG: <stat>,<lac>,<ci> (which includes location information) is returned
when <n>=2 and there is a change of the network cell.
+CREG? returns the status of result code presentation and an integer <stat>
showing the current status. (Location information elements <lac> and <ci> are
returned only when <n>=2 and the modem is registered on the network.)
Returned values
The possible returned values of <stat> are:
• 0: not registered; not seeking a new operator
• 1: registered, home network
• 2: not registered; currently seeking a new operator
• 3: registration denied
• 4: unknown
• 5: registered, roaming
<lac> is a string specifying a two-byte location area code in hexadecimal format
(e.g. “00C3” equals 195 in decimal).
<ci> is a string specifying a two-byte cell ID in hexadecimal format.
+CRES Restore SMS settings
Restores the SMS settings of the Sierra Wireless modem for +CMGF (page 78),
+CNMI (page 82), and +CSDH (page 93) from settings stored in non-volatile
memory.
Note: For information on saving these settings to non-volatile memory, see
+CSAS on page 92.
Table 3-9: Command Reference Table (ASCII Alphabetic)
Command Description