Hello,
I’m a new user of the Q2686 chip and I encounter some issue when testing “basic” command. I have inserted my SIM card, enter the pin code with the command AT+CPIN.
Then when I try to execute the example where a voice call is originated it always returns “NO CARRIER”.
Here are some traces of my commands:
AT+CMEE=1
OK
AT+WIND=63
OK
AT+CPIN?
+CPIN: READY
at+csq
+CSQ: 20,0
OK
atd112; //Emergency number
+WIND: 5,1
NO CARRIER
+WIND: 6,1
Please help me!!
Thanks for your help
You should never call the emergency number except in the case of a genuine emergency! 
Bogus calls are a big problem for the emergency services - do not add to it!
I don’t know about your country, but over here it’s a serious offence and could get you into big trouble!
Try AT+CEER after the NO CARRIER to get extended cause info…
By searching on the web, I see the command at+creg to check the registration status.
The command at+creg? returns +CREG: 1,0
I don’t understand why the module is not searching for a new operator??
Thanks for your help
Thank for your help!
Of course I don’t really call emergency it’s just to show you a sample case in reality I call my phone but I didn’t want to write my phone number … Don’t worry.
I try to tape at+ceer after having revceived NO CARRIER and I have the error 254. ==> call impossible
I really think it’s due to the command at+creg? that returns +CREG1,0 but I don’t know why the module doesn’t try to connect …
I’m in France
ps: I’m sorry for my english 
hi fab38 ,
I need u r help .I am new to q2686 module i need basic spi communication and how to use RTC do u have any idea please help me…
please help me…
thanks…
Two questions: