Getting Started
37
Testing the Configuration Descrip-
tion
A
T
Commands
Response
Returned
Comments
A
T+CPIN
=1234
O
K PIN Code accepted
+CME
E
RROR : 16
Incorrect PIN Code
Enter PIN
Code
+CME
E
RROR : 3
PIN already entered
(with +CMEE : 1
mode)
A
T +
C
REG ?
C
REG =
<mode>, 1
modem
synchronized on the
network
C
REG =
<mode>, 2
synchronization lost,
re-synchronization
attempt
Module
synchro
checking
C
REG =
<mode>, 0
Modem not
synchronized on
network. No
synchronization
attempt