User's Manual

Page 32 of 187
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
#MONI 10
+CGACT 180
+CGATT 180
+CGDATA 20
+CGDCONT 20
+CGPADDR 20
+CGQMIN 20
+CGQREQ 20
2.2.4 Command issuing timing
The chain Command -> Response shall always be respected and a new command must not be
issued before the GM862-PCS has terminated all the sending of its response result code (whatever it
may be).
This applies especially to applications that "sense" the OK text and therefore may send the next
command before the complete code <CR><LF>OK<CR><LF> is sent by the GM862-PCS.
It is advisable anyway to wait for at least 20ms between the end of the reception of the response and
the issue of the next AT command.
If the response codes are disabled and therefore the module does not report any response to the
command, then at least the 20ms pause time shall be respected.
During command mode, due to hardware limitations, under severe CPU load the serial port can
loose some characters if placed in autobauding at high speeds. Therefore if you encounter this
problem fix the baud rate with AT+IPR command.
2.2.5 Factory Profile and parameters stored in the profile
The GM862-PCS stores several command configurations in the internal non volatile memory (see
command &W), allowing to remember this status even after power off.
The parameters that are stored in the profile and their are:
GSM DATA MODE : +CBST: 0,0,1
AUTOBAUD : +IPR: 0
COMMAND ECHO : E1
RESULT MESSAGES : Q1
VERBOSE MESSAGES : V1
EXTENDED MESSAGES : X1
FLOW CONTROL OPTIONS : &K3
CTS (C106) OPTIONS : &B2
DSR (C107) OPTIONS : &S3
DTR (C108) OPTIONS : &D0
DCD (C109) OPTIONS : &C1
RI (C125) OPTIONS : \R1
C108/1 OPERATION : &D4
POWER SAVING : +CFUN: 1
DEFAULT PROFILE : &Y0
S REGISTERS: S0=0;S1=0;S2=43;S3=13;S4=10;S5=8;S7=60;S12=50;S25=5;S38=20