13
DS100-1 May ’07
www.rfsolutions.co.uk
©
2007 REG No 277 4001, ENGLAND.
Page 13
GSM & GPRS Modem
CHAPTER 5
APPENDIX
5.1 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 (9600 for Eco)
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
0
Calling line ID restriction
AT+CSCS “PCCP437”
Character
set
AT+CMGF
1
Short Message format
AT+CSMP
1,67,0,0
Text mode parameters *
AT+CNMI
0,1,0,0
New message indication *
*Note: settings stored in SIM, not in modem
5.2 Input / Output port
This port can be configured as either an input one or an output one.
To configure it as an input port, first issue AT+WIOW=2, 0 to disable the output port. Use AT+WIOR=3 to
read the status of this input port. ReWIOR: 0 represent Logic HIGH (>3V); ReWIOR: 1
represent Logic LOW (<0.5V) To use it as an output port, issue AT+WIOW=2,1 will turn it on and it will
drain current to ground. The current is recommended not to exceed 5 mA. Issue AT+WIOW=2,0 will turn it
off.
5.3 RS232 AUTO-ONLINE mode (power saving)
When being in the AUTO-ONLINE, the RS232 transceiver will shutdown most of its hardware to save
power if 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, the RS232 transceiver is put in AUTO-ONLINE. This mode can be turned off by issuing
AT+WIOM=,16.
