Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 93 12/24/2010
See Write Command
Response
+CCWE: <mode>
OK
If error is related to ME functionality:
+CME ERROR: <err>
Read Command
AT+CCWE?
Parameter
See Write Command
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<mode> 0 Disable call meter warning event
1 Enable call meter warning event
Write Command
AT+CCWE=<m
ode>
Unsolicited result codes supported:
+CCWV Shortly before the ACM (Accumulated Call Meter)
maximum value is reached, an unsolicited result code
+CCWV will be sent, if enabled by this command. The
warning is issued approximately when 5 seconds call time
remains. It is also issued when starting a call if less than 5 s
call time remains.
Reference
GSM 07.07 [13]
Note
GSM 07.07 specifies 30 seconds, so SIMCom deviates from the
specification.
3.2.56 AT+CBC Battery Charge
AT+CBC Battery Charge
Response
+CBC: (list of supported <bcs>s),(list of supported <bcl>s),(<voltage>)
OK
Test Command
AT+CBC=?
Parameters
See Execution Command
Execution
Command
AT+CBC
Response
+CBC: <bcs>, <bcl>,<voltage>