Chapter 4
Default Settings
4.1
Factory settings
The modem has the following factory settings. Please refer to the AT command document for the meaning
of each setting.
Related AT commands
Factory settings
Description
AT+IPR
115200
DTE-DCE data rate
AT+IFC
2,2
DTE-DCE flow control
AT+ICF
3,4
DTE-DCE character framing
ATE
1
ECHO
AT&C
1
DCD signal
AT&D
2
DTR signal
ATQ
0
Result code suppression
ATV
1
Response format
AT&S
1
DSR signal
ATS0
0
Auto answer
AT+CLIP
0
Calling line ID presentation
AT+CRLP
Calling line ID restriction
AT+CSCS
“PCCP437”
Character Set
AT+CMGF
1
Short message format
AT+CSMP
1,67,0,0
Test mode parameters*
AT+CNMI
0,1,0,0
New message indication*
*Note:
settings stored in SIM, not in modem
4.2
RS232 Auto-online mode (power saving)
When being in the auto-online, the RS232 transceiver will shut down most of its hardware to save power is
it does not detect a valid input for more than 100uS. The RS232 transceiver will wake up when valid input
is detected again.
By default, Auto-online mode of the RS232 transceiver is not active. To activate it, issue AT+WIOM=1,”GPIO22”,1,0
followed by AT+WIOM=4 (this needs to be done only once).
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