A3LA-R-MIL-MOD User Guide Version B
Document Number: 451-93156-001A
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E.4
SBD
A
UTOMATIC
N
OTIFICATION
R
EGISTRATION
The DTE verifies its registration state, performs a registration in order to be able to receive
automatic notifications, and enables automatic notification indications (see Table 14).
Table 14: SBD Automatic Notification Registration
To A3LA-R (from DTE)
To DTE (from A3LA-R)
Description
AT+SBDREG?
Query the A3LA-R registration status
+SBDREG: 0
A3LA-R is detached, i.e., unregistered
AT+SBDREG
Tell the A3LA-R to register for
automatic notifications
+SBDREG: 2,0
A3LA-R is now registered
AT+SBDREG?
Query the A3LA-R registration status
+SBDREG: 2
A3LA-R is registered
AT+SBDMTA=1
Enable SBD ring indications from A3LA-
R to DTE
OK
E.5
SBD
A
UTOMATIC
N
OTIFICATION
M
ESSAGE
R
ECEPTION
The DTE verifies its registration state. Upon receiving automatic notification, the DTE initiates
an SBD session to receive an MT message (see Table 15).
Table 15: SBD Automatic Notification Message Reception
To A3LA-R (from DTE)
To DTE (from A3LA-R)
Description
AT+SBDREG?
Query the A3LA-R registration status.
+SBDREG: 2
A3LA-R is registered.
…
Vendor application sends an MT
message to the GSS.
+SBDRING
A3LA-R indicates an incoming
message. The RI line also toggles.
AT+SBDIXA
DTE initiates an SBD session in answer
to the automatic notification.