The GSM can be configured remotely and send status information via SMS to a list of authorised users.
Two types of authorised user profile can be configured:
•
Up to 4 users who have permission to configure and request information messages from the 3G GSM
•
Up to 4 users who can receive SMS information messages from the 3G GSM.
NOTE: If no numbers are set to configure then any user can remotely manage the 3G GSM
The authorised user list can be setup by sending the following SMS to the 3G GSM unit:
*1 # ID # conf1 , conf2 , conf3 , conf4 # dest1 , dest2 , dest3 , dest4
Configuration of the Authorised User List
Command
Description
*1
Configuration message start
#
Separator
ID
GSM ID - maximum 8 alphanumeric characters - Default: 3GLIFT
#
Separator
conf1
Number enabled to configure GSM
,
Separator
conf2
Number enabled to configure GSM
,
Separator
conf3
Number enabled to configure GSM
,
Separator
conf4
Number enabled to configure GSM
#
Separator
dest1
Number enabled to receive messages from GSM
,
Separator
dest2
Number enabled to receive messages from GSM
,
Separator
dest3
Number enabled to receive messages from GSM
,
Separator
dest4
Number enabled to receive messages from GSM
Notes: All telephone numbers must have the international prefix e.g. +44 for UK
Example configuration message (two users):
*1#447987447123447987447123456789
SMS Remote Configuration and Management of the 3G GSM
When the GSM has received a message it will check if the message is from the list of authorised numbers.
•
If the message is from an unauthorised number then it will be ignored
•
If the message is from an authorised number, and is correctly formatted, then a message reading ‘ACK’ will be
received
•
If the message is from an authorised number, and is incorrectly formatted, then a message ‘NACK’ will be received
All the messages from the GSM start with an index number followed by a #. This index number starts at 0 and will
increase to 255 before resetting to 0. This will reset if the GSM is powered down.
Example of successful configuration message:
2 # *1 3GLIFT # ACK
Configuration acknowledgement messages
