MC7304 Not Working - Config? (new user)

IoT Modules MC/EM Series
1

Hi,

I’m new to Sierra Wireless modems. I just got an MC7304 and am having no luck getting it working using the AT command interface.
The modem works OK with the Skylight app, so I’m guessing I am missing some configuration steps when using the AT interface.

The problem is that all ATD commands fail with NO CARRIER (data and voice), and SMS send fails with +CMS ERROR: 350 - I have no idea what that means?
The good news is that the modem can receive SMS, and I can retrieve them using the AT interface.
The modem can’t receive voice calls (number unavailable tone), at all times, even when Skylight is running.

Attached is a log of an AT session showing the basic settings and state of the modem.

I’d be very grateful if anybody would take a look and suggest any possible issues or how to diagnose further.

Many thanks,

Sam Kingsbury.

OK
ATI
Manufacturer: Sierra Wireless, Incorporated
Model: MC7304
Revision: SWI9X15E_04.05.23.00 r18872 CNSHZ-AR-BUILD 2013/11/01 06:15:49
IMEI: 356853050081233
IMEI SV: 0
FSN: J3416602120410
+GCAP: +CGSM,+FCLASS,+DS


OK

ATV1
OK

AT+CREG?
+CREG: 0,1

OK

AT+CPIN?
+CPIN: READY

OK

AT+COPS?
+COPS: 0,0,"O2 - UK",0

OK

AT!BAND?
Index, Name
05, GSM ALL


OK

AT!BAND=?
Index, Name
00, All bands                     
05, GSM ALL                       
06, Europe                        
08, WCDMA ALL                     
09, LTE ALL                       
0A, Oceania                       


AT+GCAP
+GCAP: +CGSM,+FCLASS,+DS

OK

AT&V
&C: 2; &D: 2; &E: 0; &F: 0; &S: 0; &W: 0; E: 1; L: 0; M: 0; Q: 0; V: 1;
X: 1; Z: 0; \Q: 3; \S: 0; \V: 0; O: 0; S0: 0; S2: 43; S3: 13; S4: 10;
S5: 8; S6: 2; S7: 0; S8: 2; S9: 6; S10: 14; S11: 95; S30: 0; S103: 1;
S104: 1; ^PREFMODE: 0; ^DSCI: 0; ^CPIN: ,; ^HSMSSS: 0,0,1,0;
!GPSIDREN: 0; !GPSIDRMSK: 0,0

OK

AT+COLP?
+COLP: 0,0

OK

AT!SELMODE?
!SELMODE: 02, CS and PS


OK

AT+CSCA?
+CSCA: "+447802000332",145


OK

AT+CSQ
+CSQ: 18,99

OK

AT+CMGF=1
OK

AT+CMGS="07800965437"
> hi
> 

+CMS ERROR: 350

ATD07800965437;
NO CARRIER

ATD07800965437
NO CARRIER

AT!BAND=0
OK

AT!BAND?
Index, Name
00, All bands


OK

AT+CMGS="07800965437"
> hi
> 

+CMS ERROR: 350

ATD07800965437;
NO CARRIER

ATD07800965437
NO CARRIER
2

I’ve tried two further network operators. EE (Orange) gave same results as O2, but on Vodafone I am able to send SMS, but still can’t make or receive calls.

3

Well, still not working… but here’s some more info. Everything looks OK?

Cheers, Sam.

AT!GETBAND?
!GETBAND: WCDMA 2100

OK

AT!GETRAT?
!GETRAT: UMTS

OK

AT!GSTATUS?
!GSTATUS:
Current Time:  5338     Temperature: 31
Bootup Time:   0        Mode:        ONLINE
System mode:   WCDMA        PS state:    Attached
IMS Reg State: NO SRV
WCDMA band:    WCDMA 2100
WCDMA channel: 10736
GMM (PS) state:REGISTERED       NORMAL SERVICE
MM (CS) state: IDLE             NORMAL SERVICE
WCDMA L1 State:L1M_FACH         LAC:         03A7 (935)
RRC State:     CELL_FACH        Cell ID:     0388FF50 (59309904)
RxM RSSI C0:   -84      RxD RSSI C0: -106
RxM RSSI C1:   -106     RxD RSSI C1: -106

OK

AT!CUSTOM?
!CUSTOM:
            ISVOICEN        0x01
            PCSCDISABLE     0x03
            NOROAM      0x01
            GPSENABLE       0x01
            RRCREL7CAPDIS   0x02
            GPSSEL      0x01
            NMEAENABLE      0x01
            GOBIIMEN        0x01

OK                   

ATD07800961234;
NO CARRIER
4

Still looking for any help going on this one… crazy ideas, you name it, speak up.

One extra item of info I have. The command AT!SELRAT=2 always fails - ERROR. The modem will only accept SELRAT settings that allow it use UTRAN (3G). It won’t use GSM (2G).

Cheers,
Sam.

5

Hi Sam,

It has been some time and hope you have solved the issue already… but if not, please see below:

For SMS:
[url]https://forum.sierrawireless.com/t/cms-error-350-when-sending-sms/7927/2]

For Voice call:
[url]https://forum.sierrawireless.com/t/mc7304-voice-call-busy-tone/7216/1]

Thx