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NAL Research Corporation (TN2012-02-V1.0)
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A.8.50 +CREG – Network Registration
Set Command:
+CREG=[<n>]
Set command controls the presentation of an unsolicited result code +CREG: <stat> when
<n>=1 and there is a change in the A3LA-RS network registration status, or code +CREG:
<stat>[,<lac>,<ci>] when <n>=2 and there is a change in the registration status of the A3LA-
RS.
Valid values for <n> are:
0
disable network registration unsolicited result code (default)
1
enable network registration unsolicited result code +CREG: <stat>
2
enable network registration and location information unsolicited result code
+CREG: <stat>[,<lac>,<ci>]. <lac> indicates the location area code in string
format; <ci> is in the cell identifier which is not applicable to IRIDIUM.
<stat> can be one of the following:
0
not registered, A3LA-RS is not currently searching a new operator to register to
1
registered, home network
2
not registered, but A3LA-RS is currently searching a new operator to register to
3
registration denied
4
unknown
5
registered, roaming
Read Command:
+CREG?
Read command returns the status of result code presentation and an integer <stat> which
shows the network registration status of the A3LA-RS. Location information elements <lac> and
<ci> are returned only when <n>=2 and A3LA-RS is registered in the network. Response is in
the form:
+CREG: <n>,<stat>[,<lac>,<ci>]
Test Command:
+CREG=?
Test command lists the supported settings for +CREG. Response is in the form:
+CREG: (list of supported <n>s)
A.8.51 +CSCA – SMS Service Center Address
Set Command:
+CSCA=<sca>[,<tosca>]
Set command updates the SMSC address, through which mobile originated SMs are
transmitted. In PDU mode, setting is used by the send and write commands, but only when the
length of the SMSC address coded into <pdu> parameter equals zero.
<sca>: GSM 04.11 [8] RP SC address Address-Value field in string format (i.e., enclosed by
quotes ““);
<tosca>: GSM 04.11 [8] RP SC address Type-of-Address octet in integer format;
Read Command:
+CSCA?
Read command returns the current service center address. Response is in the form:
+CSCA: <sca>,<tosca>