AT Commands Reference Guide
80529ST10815A Rev.2– 2017-09-14
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Identification Information - I
I - Identification Information
ATI[<n>]
Execution command returns one or more lines of information text followed by a result
code.
Parameter:
<n>
0 - numerical identifier
1 - module checksum
2 - checksum check result
3 - manufacturer
4 - product name
5 - DOB version
Note: if parameter is omitted, the command has the same behaviour of ATI0
Reference
V25ter
Data Carrier Detect (DCD) Control - &C
&C - Data Carrier Detect (DCD) Control
AT&C[<n>]
Set command controls the RS232 DCD output behaviour.
Parameter:
<n>
0 - DCD remains high always.
1 - DCD follows the Carrier detect status: if carrier detected DCD is high, otherwise
DCD is low. (factory default)
2 – DCD is always high except for 1sec ‘wink’ when a data call is disconnected.
Note: if parameter is omitted, the command has the same behaviour of AT&C0
Reference V25ter
Data Terminal Ready (DTR) Control - &D
&D - Data Terminal Ready (DTR) Control
AT&D[<n>]
Set command controls the Module behaviour to the RS232 DTR transitions.
Parameter:
<n>
0 - DTR transmitions ignored (factory default)
1 - When the MODULE is connected, the High to Low transition of DTR pin sets
the device in command mode an
the current connection is NOT closed.
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