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4.
Error messages (optional): +CMEE, +CEER
Example
AT+CMEE=2
OK
AT+CEER=2
OK
5.
Registration and call indications: +CREG, +CLCC
Example
AT+CREG=2
OK
AT+CLCC=1
OK
6.
HW lines configuration (optional): ATS99 (GPRS-Coverage), &C(DCD), &D(DTR), &K(flow-control)
RS-232 lines can be configured using the following AT commands: AT&C, AT&D, AT&K. Refer to Chapter 4, AT
Commands Reference.
Default settings should be:
• AT&C1
• OK
• AT&D2
• OK
• AT&K3
• OK
5.1.2
SIM Management
The following steps are part of the second phase of connectivity:
1.
Check and fix SIM security: +CPIN
2.
AT+CPIN?
3.
Confirm that the result is +CPIN: READY
4.
If the SIM pin is required, then the following response appears: +CPIN: SIM PIN
5.
Unlock the SIM, if needed: AT+CPIN="XXXX"
Note: XXXX is the PIN password (4-8 digits long).
98-08901C68-O
//Enable +CME ERROR: error messages verbose string
Using the Commands
265
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