Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 129 12/24/2010
<sec> second (from network)
<time zone> string type; network time zone. If the network time zone
has been adjusted for Daylight Saving Time, the network
shall indicate this by including the <dst> (Network
Daylight Saving Time)
<dst> Network Daylight Saving Time; the content of this
indicates the value that used to adjust the network time
zone
0 No adjustment for Daylight Saving Time
1 +1 hour adjustment for Daylight Saving
2 +2 hours adjustment for Daylight Saving Time
3 Reserved
Reference Note
z Support for this Command will be network dependent.
z Set AT+CLTS=1, it means user can receive network time updating
and use AT+CCLK to show current time.
6.2.13 AT+CEXTHS External Headset Jack Control
AT+CEXTHS External Headset Jack Control
Response
+CEXTHS: (<mode>s)
OK
Test Command
AT+CEXTHS=?
Parameter
See Write Command
Response
+CEXTHS: <mode>,<headset attach>
OK
Read Command
AT+CEXTHS?
Parameters
See Write Command
Response
OK
ERROR
If error is related to ME functionality:
+CME ERROR: <err>
Unsolicited result code:
+CEXTHS: <mode>,<headset attach>
Write Command
AT+CEXTHS=<
mode>
Parameters
<mode> a numeric parameter which indicates whether an unsolicited
event code (indicating whether the headset has been