Hi
Just for reference, I’m working in India. So I set up my Arduino Uno with the Cellular shield as instructed by :
http://tronixstuff.wordpress.com/2011/0 … -part-one/
I was able to set up the SIM card successfully (Airtel network) and make a phone call using the terminal program.
ie, I got as serial outputs:
+SIND: 11
+SIND: 3
+SIND: 4
and I was able to use the ATDxxxxxx command successfully. On the second try however, this happened:
http://i1249.photobucket.com/albums/hh5 … nowRun.jpg
and I was unable to connect to network. I used the same SIM card (Airtel network) in a regular cellphone and was able to make calls without any problems but when I re-inserted it into the cellular shield, the terminal program gave me a +SIND: 7. When I reset the connection the same thing happened.
Next I tried a vodafone SIM and I was again able to connect to the network and make a single call. On the next try though the same problem repeated. (+SIND: 7) Now I am unable to use this SIM also with the cellular module although it works fine on a regular cellphone (as with the first Airtel SIM card). Following is the screenshot from the unsuccessful call attempts:
http://i1249.photobucket.com/albums/hh5 … ttempt.jpg
Any help would be greatly appreciated. I am trying to integrate the cellular shield into a project that needs to be submitted on Monday. Additionally there is no problem with the cellular network signal. Thanks