Thank you for support.
I sent all these AT comands to the modem via terminal and the response was ok for all of them. including
AT+CFUN=1
AT+CGDCONT?
Do I need to send other AT comands like:
Signal Quality Checks, Network Registration Checks, Network registration
AT
AT&F
AT+IPR=115200;&W
AT+WOPEN=0
ATE1
ATX0
ATS0=1
AT&D2
AT+CICB=0
AT+IFC=0,0
AT+WIND=0
AT+WRST=0
AT&W
AT+CFUN=1
AT+CGDCONT?
AT&V
Q:0 V:1 S0:001 S2:043 S3:013 S4:010 S5:008
+CR:0 +CRC:0 +CMEE:0 +CBST:0,0,1
+SPEAKER:0 +ECHO:0,1 &C:1 &D:2 %C:0
+IPR:9600 +ICF:3,4 +IFC:0,0
OK
AT+CRC=1
AT+CMEE=1
AT+SPEAKER=1
AT&W
AT&V
Q:0 V:1 S0:001 S2:043 S3:013 S4:010 S5:008
+CR:0 +CRC:1 +CMEE:1 +CBST:0,0,1
+SPEAKER:1 +ECHO:0,1 &C:1 &D:2 %C:0
+IPR:9600 +ICF:3,4 +IFC:0,0
OK
best regards