Go Down

Topic: GSM Shield with T-Mobile SIM, I get "NO CARRIER" (Read 8398 times) previous topic - next topic

TimReinarts

Hello fellow Arduino users.

I'm playing around with the a SEEED STUDIO GSM module with the Arduino UNO.
I have a T_Mobile SIM and having trouble making a call or sending a text message.

When I power-up the GSM module, I get the following responses on the serial monitor:
RDY
+CFUN: 1
+CPIN: READY
+PACSP: 1
Call Ready

When I send the command "AT+CREG?" I get a response of:
+CREG: 0,1

Per the SIM900 AT Command Set, I decipher this to mean the device is Registered on the network.

However, when I type "ATD 18005551212", I get "NO CARRIER".

Hhhhmmmmmm...... am I missing something?  Shouldn't I be able to dial a number? 
Any suggestions??
Thanks,
Tim


RudiAhlers

"NO CARRIER" means it's not connected to the GSM network. Check your APN settings, and possibly your data plan.

ganeshbk17

you have to put semicolon after number


ie.,



..........

ATD+************;

..........

max246

 I cant believe I wasted one day thinking it wasnt registred properly... and I was missing a ";". They sould return a proper error not "NO CARRIER"

Go Up