HL7692 manual network selection error

IoT Modules Legacy HL Series
1

Hi!

I’m trying to implement manual network selection via AT+COPS=1 command, but it always immediately returns “+CME ERROR: operation not supported”.

at+cops=?
+COPS: (1,"VODAFONE","VODAFONE","25501",7),(1,"UA-KYIVSTAR","UA-KS","25503",0),(1,"UA-KYIVSTAR","UA-KS","25503",7),(1,"VODAFONE","VODAFONE","25501",0),(1,"life:)","life:)","25506",0)

and then

AT+COPS=1,0,UA-KYIVSTAR,7
+CME ERROR: operation not supported

Current registration status: +CGREG: 1,2

Is there anything I’m missing, like some prerequisites or other AT commands that should be issued before?

Thank you.

2

Is it working for registration when using at+cops=0 ?

3

yes, at+cops=0 is fine

4

how about

AT+COPS=1,0,“UA-KYIVSTAR”,7

5

same:

AT+COPS=1,0,“UA-KYIVSTAR”,7
+CME ERROR: operation not supported
6

I don’t see such problem:

at+cops=?
+COPS: (2,"CSL","CSL","45400",7),(1,"CSL","CSL","45400",0),(1,"China Mobile HK","CMHK","45412",7),(1,"China Mobile HK","CMHK","45412",0),(3,"SmarTone HK","SMC HK","45406",7),(1,"3","3","45403",7),(1,"3","3","45404",0),(3,"SmarTone HK","SMC HK","45406",0)

OK
at+cops=1,0,"CSL",7
OK
ati3
RHL769x.2.24.173100.201709051100.x7120m_1

OK
at+cgreg?
+CGREG: 0,1

OK
at+Creg?
+CREG: 1,1

OK
ati9
RHL769x.2.24.173100.201709051100.x7120m_1
HL7692
HL769x.2.24
x7120m
FUSED
2017-09-05 11:32:03
r10943

OK
at+Cfun=1,1
OK

+CREG: 0
at
OK

+CREG: 2
at+creg?
+CREG: 1,2

OK

+CREG: 1
at+cops?
+COPS: 1,0,"CSL",7

OK
7

good for you, but doesn’t change anything for me

is there may be a command to reset modem settings, so that we both start from the same state?

8

Are we using same fw?

Maybe you can try other network operator and see what happens

9

It’s really weird, but at some point it just started to work. Not sure what has changed, may be UART connection is noisy/unstable. Sorry for the hassle, if it’s on our side.

10

Since this topic almost fits, I’ll continue here.

I have SIM card of a certain network operator, and manual network selection via AT+COPS=1,… succeeds only if I pass that operator name as a parameter. If I try any other returned from AT+COPS=?, I get the following error:

at+cops=?
+COPS: (2,"UA-KYIVSTAR","UA-KS","25503",7),(1,"UA-KYIVSTAR","UA-KS","25503",0),(3,"VODAFONE","VODAFONE","25501",0),(1,"life:)","life:)","25506",0)
AT+COPS=1,0,"VODAFONE"
+CME ERROR: PLMN not allowed

+CREG: 3

+CGREG: 3

+CEREG: 3

Does it mean my SIM card can only be used with this specific operator, or may be there’s a more complex command sequence to be performed (that is, not just AT+COPS=1,…)?

Thank you!

11

Better try with another device or cell phone to double confirm

12

Thank you, seems to be a limitation of the SIM card/operator – same behavior with cell phone.