Hello. I have used modem M95-M3 in last projects and it worked fine.
But now I use BG95-M3 and there is a problem :
//after we have GSM connection
AT+CGREG?
CREG: 2,1,“A03C”,“839B”,0
// we cannot register EGPRS !
AT+CGREG?
CGREG: 2,3
// CSQ is good . this SIM works fine with M95-M3 . But with BG95-M3 it cannot register EGPRS.
there is the log below :
AT
OK
AT
OK
AT+COPS=2
OK
AT+IPR=115200;&W
OK
AT+IFC=2,2
OK
AT+QCFG=“nwscanmode”,1
OK
AT+QCFG=“nwscanseq”,01
OK
AT+QCFG=“iotopmode”,0
OK
AT+QICSGP=1,1,“(there is APN)”,“”,“”,1
OK
AT+QCFG=“urc/ri/smsincoming”,“off”
OK
AT+QCFG=“urc/ri/ring”,“off”
OK
AT+QISDE=0
OK
AT+QCFG=“band”,0xF,0x80,0x80
OK
AT+CPIN?
+CPIN: SIM PIN
AT+CPIN=“5562”
OK
AT+CPIN?
+CPIN: READY
AT+COPS=0,2,0,0
OK
AT+CREG=2
OK
AT+EGMR=0,7
+EGMR: “864475044518685”
OK
AT+CCID
+CCID: 8948011122211834115F
OK
AT+CREG?
+CREG: 2,2
AT+CREG?
+CREG: 2,1,“A03C”,“839C”,0
AT+CGREG?
+CREG: 2,3
AT+CGREG?
+CREG: 2,3
AT+CGREG?
+CREG: 2,2
////////////////
Then I just send AT+CREG? and I’ve never get registred Status. All the time the same.
Could you help me , please . Thanks in advance.