iÂ´m experiencing a problem with at+cgatt=1 command. sometimes it doesnt return any value for about 2 minutes, during this time any AT command(exept at+cfun=1) returns error. After 2 minutes the responce is “+CME ERROR: 148”.
could anyone tell me where the problem is? iÂ´ve checked the gprs parameters(CID, APN, user name, password) and they are correct.