Microsoft Word sim800c-ds application Note V


+CSQ: Always return the signal quality of SIM1



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SIM800C-DS Application Note V1.00

+CSQ: Always return the signal quality of SIM1. 

+CSQDS: Always return the signal quality of SIM2. 

2.4.  AT+CREGDS Query the network registration status of both SIM cards 

AT+CREGDS    Query the network registration status of both SIM cards 

Response 

TA returns the status of result code presentation and an integer  

which shows whether the network has currently indicated the registration 

of the ME. Location information elements  and  are returned 

only when =2 and ME is registered in the network. 



+CREG: ,[,,

+CREGDS: ,[,,

 

OK 

If error is related to ME functionality: 



+CME ERROR:  

Read Command 



AT+CREGDS? 

Parameters 



<n>     

0    Disable network registration unsolicited result code 

1    Enable network registration unsolicited result code 

   +CREG:  

2    Enable network registration unsolicited result code with 

location information +CREG: [,,



<stat

0    Not registered, ME is not currently searching a new operator to 

register to 

1    Registered, home network 

2    Not registered, but ME is currently searching a new operator to 

register to 

3  Registration denied 

4  Unknown 

5  Registered, roaming 

<lac>      String type (string should be included in quotation marks); two 

byte location area code in hexadecimal format 



<ci>      String type (string should be included in quotation marks); two 

byte cell ID in hexadecimal format 

 

Reference 



3GPP TS 27.007 [13]

 

Note 



This AT command is not controlled by AT+CDSDS. 


                                                                                                                Smart Machine Smart Decision                                       

SIM800-DS_Application Note_V1.00                                                                                             2015-07-30 

10


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