Reputation: 7110
SMS sent with AT Command has random sender number
I've got a SIM7600G-H version 2. I want to use it to send and receive SMSes and phone calls through my PC. I've got it connected with a USB cable and I'm writing Kotlin code to communicate with jssc.
It's important to know...
- I have a UK SIM card (the provider is Giffgaff)
- I'm in the Netherlands, so I'm roaming.
SMS
I can use AT Commands to successfully send SMS messages...
> AT+CMGS="+31600..."
> test message \u001a
+CMGS: 55
But when I receive them, the sender number is completely random, and from different countries.
I don't recognise any of the numbers. I don't know where they come from.
Phone calls
I'm also unable to make phone calls.
> ATD+31600....
NO CARRIER
Questions
- How can I make sure that when I send SMSes with my SIM7600 that they appear as the correct number?
- How can I configure the SIM7600 to make phone calls?
Diagnostics
The 'net light pin' LED usually flashes 200ms on, 200ms (4G registered), which seems fine.
AT+CEER usually returns +CEER: No cause information available, and sometimes returns bearer capability not authorized
AT+CUSD=1 -> OK and ATD*#5005*7672# takes about 30 seconds to always reports NO CARRIER
Device details
> ATI
Manufacturer: SIMCOM INCORPORATED
Model: SIMCOM_SIM7600G-H
Revision: SIM7600M22_V2.0
IMEI: 812[omitted]
+GCAP: +CGSM
Network info
The network settings seem okay. Correct carrier name and details, decent signal quality, roaming, LTE.
> AT+CSPN?
+CSPN : "giffgaff",1
> AT+COPS?
+COPS : 0,0,"NL KPN giffgaff",7
> AT+CSQ
+CSQ : 25,99
> AT+CREG?
+CEREG : 0,5
> AT+CEREG?
+CEREG: 0,4
> AT+CNSMOD?
+CNSMOD : 0,8
+CIMI : 123...[omitted] # looks okay
+CPSI : LTE,Online,204-08,0xF03D,4098848,203,EUTRAN-BAND3,1300,5,5,-88,-946,-658,12
PDP / APN
I've tried setting the APN to Giffgaff settings, and I think they're set correctly, using.
- APN:
giffgaff.com - Username:
gg - Password:
p - Proxy:
{Leave Blank} - MCC:
234 - MNC:
10 - APN protocol:
IPv4v6 - APN roaming protocol:
IPv4 - Authentication type:
PAP
+CGDCONT : 1,"IPV4V6","giffgaff.com","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
+CGDCONT : 2,"IP","giffgaff.com","0.0.0.0",0,0,0,0
+CGDSCONT : # (no output)
+CGACT : 1,0
+CGACT : 2,1
The SMS Service Center number seems correct
+CSCA: "+447802002606",145
AT&V - Display current configuration
> AT&V
&C: 2; &D: 2; &E: 1; &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; +FCLASS: 0; +ICF: 3,3; +IFC: 0,0; +IPR: 115200; +DR: 0;
+DS: 0,0,2048,6; +CMEE: 2; +WS46: 25; +CFUN:; +IPREX: 115200;
+CBST: 0,0,1; +CRLP: (61,61,48,6,0),(61,61,48,6,1),(240,240,52,6,2);
+CV120: 1,1,1,0,0,0; +CHSN: 0,0,0,0; +CSSN: 0,0; +CREG: 0; +CGREG: 0;
+CEREG: 0; +CSCS: "IRA"; +CSTA: 129; +CR: 0; +CRC: 0;
+CGDCONT: (1,"IPV4V6","giffgaff.com","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0),(2,"IP","giffgaff.com","0.0.0.0",0,0,0,0);
+CGDSCONT: ; +CGTFT: ; +CGEQREQ: ; +CGEQMIN: ; +CGEQOS: ; +CGQREQ: ;
+CGQMIN: ; +CGEREP: 0,0; +CGDATA: "PPP"; +CGCLASS: "A"; +CGPIAF: 0,0,0,0;
+CGSMS: 2; +CSMS: 0; +CMGF: 1; +CSAS: 0; +CRES: 0; +CSCA: "",;
+CSMP: ,,0,0; +CSDH: 0; +CSCB: 0,"",""; +CMGP: 4098,0,,0,; +ES: ,,;
+ESA: 0,,,,0,0,255,; +CMOD: 0; +CEMODE: 1; +CVHU: 1; ; ; ; ; ; ;
+CSCLK: 0; +CCUART: 0; +CFGRI: 0,60,120; +CUARTSD: 500; +CURCD: 0;
+CUARTLOG: 0; +CUARTRM: 0; +CFGRIDTM: 60,120; +CATR: 0; +CNMP: 2;
+CNRP: 255; +CNAOP: 0; +CNSDP: 2; +CNSMOD: 0; +CNLSA: 0; +CEXTEPLMN: 1;
+CSQFMT: 1; +AUTOCSQ: 0,0; +CSQDELTA: 5; +CPSI: 0; +CMGSI: 2;
+CMGRMI: 4,0; +MONI: 0; +CRUPSI: 0; +CRUSET: 0; +CGPS: 0,1; +CGPSMSB: 1;
+CGPSINFO: 0; +CGPSINFOCFG: 0,0,0; +CGPSHOR: 50; +CGPSPMD: 65407;
+CGPSXD: 0; +CGNSSINFO: 0; +CSOCKAUTH: 1,0,""; +CGAUTH: 1,0,""; ;
+CIPHEAD: 1; +CIPSRIP: 1; +CIPCCFG: 10,0,0,1,0,0,500; +CIPENSRXGET: 0;
+CIPMODE: 0; +CPIN: ��������,��������; +CMEC: 0,0,0,0;
+CIND: 0,4,1,1,1,0,1,0; +CMER: 0,0,0,0,0; +CGATT: 1; +CGACT(1,0),(2,1);
+CPBS: "SM"; +CPMS: "SM","SM","SM"; +CNMI: 2,1,0,0,0; +CMMS: 0;
+CCUG: 0,0,0; +COPS: 0,0,""; +CUSD: 1; +CAOC: 1; +CCWA: 0;
+CPOL: 0,2,"",0,0,0,0; +CPLS: 0; +CTZR: 0; +CTZU: 0; +CLIP: 0; +COLP: 0;
+CDIP: 0; +CLIR: 0; +CSDF: 1; +CEN: 0; +CPSMS: 0,"","","","";
+CEDRXS: 0,1,""; +CCARDMA: 0; +STK: 0; +CSALPHA: 0; +MORING: 0;
+CWAKEUPSMSSWITCH: 0; +CFILTERSMSSWITCH: 0; +EB: 1,0,30; +EFCS: 1;
+ER: 0; +ESR: 1; +ETBM: 1,1,20; +MA: ; +MR: 0; +MS: ; +MV18R: 0;
+MV18S: 0,0,0; +CXT: 0; +CDR: 0; +CDS: 0,1,2048,6; +CFC: 0; +CFG: "";
+CQD: 10; +CCRC: 0; +QCMUX: C,2; +CTA: 0; +ILRR: 0; +QCPIN: ,; *CNTI: 0;
^PREFMODE: 0; ^DSCI: 0; ^MODE: 0; ^CPIN: ,
OK
Update 1
# try finding own number
> AT+CNUM?
ERROR
# check the command does exist
> AT+CNUM=?
OK
# current phonebook
> AT+CPBS?
+CPBS: "SM",4,100
# show possible phonebooks
> AT+CPBS=?
+CPBS: ("SM","DC","FD","LD","MC","ME","RC","EN","ON")
# switch to ON (MSISDN list)
> AT+CPBS=ON
ERROR
# ON needs to be in quotes
> AT+CPBS="ON"
OK
# find by text (if null, will list all entries)
# none available
> AT+CPBF=
ERROR
# show valid indexes
> AT+CPBR=?
+CPBR: (1-3),40,14
# can't find any numbers
> AT+CPBR=1,3
+CME ERROR: not found
# store my number
> AT+CPBW=,"+4470..."
OK
#
> AT+CPBS?
+CPBS: "ON",1,3
# fetch first index
> AT+CPBR=1
+CPBR: 1,"+4470...",145,""
# find by text now returns my number
> AT+CPBF=
+CPBF: 1,"+4470...",145,""
# my number is now correctly returned
> AT+CNUM
+CPBR: 1,"+4470...",145,""
All looks good, but it still doesn't work.
The status light shows that it is reconnecting, and then settles into a 200ms/200ms on/off cycle.
> AT+CMGS="+3160..."
> asd \u001a
The status light then turns solid red (searching for network).
Eventually (~ 2 minutes later) it returns
+CMS ERROR: Unknown error
> AT+CEER
+CEER: EMM attach failed
Status info
> ATD*#5005*7672#
NO CARRIER # takes around 30 seconds to return
> AT+COPS?
+COPS: 0,0,"NL KPN giffgaff",0
> AT+CSQ
+CSQ: 19,99
> AT+CREG?
+CREG: 2,5,1806,AC07E0
> AT+CEREG?
+CEREG: 0,4
> AT+CNSMOD?
+CNSMOD : 0,7
> AT+CPSI?
+CPSI: WCDMA,Online,204-08,0x1806,11274208,WCDMA 900,233,3011,0,4.0,76,20,38,500
> AT+CGACT?
+CGACT: 1,0
+CGACT: 2,0
# activate 2nd PDP (it's Giffgaff's roaming one)
> AT+CGACT=1,2
OK
> AT+CGACT?
+CGACT: 1,0
+CGACT: 2,1
> AT+CREG?
+CREG: 5,1806,AC07E0
Upvotes: 1
Views: 2304
Answers (1)
Reputation: 47
As per location
- I have a UK SIM card (the provider is Giffgaff)
- I'm in the Netherlands, so I'm roaming.
this looks like a behavior of the roaming arrangement Giffgaff has with the local provider.
however if your modem supports AT+CNUM then it should return returns the MSISDNs related to the subscriber
here is a example from https://iot-developer.thalesgroup.com :
at+cnum?
+CME ERROR: unknown // response
at+cpbs? - display the active phonebook storage
+CPBS: "SM",250,250 // response
OK
at+cpbs=ON - select the active phonebook storage to MSISDN list
OK
at+cpbs? - display the active phonebook storage,
+CPBS: "ON",0,3 - MSISDN list is empty
OK
at+cpbw=,"+48723976327" - enter your own MSISDN
OK
at+cpbs? - display the active phonebook storage,
+CPBS: "ON",1,3 - MSISDN list has one item
OK
at+cpbr=1 - reading MSISDN list, position 1
+CPBR: 1,"+48723976327",145,"" - own MSISDN
OK
at+cnum
+CNUM: ,"+48723976327",145 - own MSISDN
Upvotes: 1
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