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D.6 SBD Automatic Notification Automatic Registration
The DTE verifies its registration state and enables automatic registration using the “Ask” mode.
D.7 Originating a Data Call
An example of how to make a data call is given below:
D.8 Answering a Data Call
The A3LA-RG is capable of accepting mobile terminated data calls. The following is a sequence of
commands that can be used to establish the connection.
+SBDRING
A3LA-RG indicates an incoming message.
The RI line also toggles.
AT+SBDIXA
DTE initiates an SBD session in answer to
the automatic notification
+SBDIXA:0,23,1,237,90,2
A3LA-RG informs DTE that a 90-byte
message was successfully received with
MTMSN 237, and that two further MT
messages are queued at the GSS
AT+SBDRB
DTE retrieves the received message from
the A3LA-RG
<binary transfer>
To A3LA-RG
(from DTE)
To DTE (from A3LA-RG)
Description
AT+SBDREG?
Query the A3LA-RG registration status
+SBDREG: 2
A3LA-RG is registered
AT+SBDAREG=2
DTE sets the automatic registration to
“Ask” mode
OK
…
A3LA-RG is moved
+AREG: 0, 0
A3LA-RG notifies DTE that it needs to
register
AT+SBDREG
DTE instructs the A3LA-RG to register
+SBDREG: 2, 0
Registration is successful
To A3LA-RG
(from DTE)
To DTE (from A3LA-RG)
Description
AT+CBST=6,0,1
Asynchronous modem 4800 bps and IRLP
OK
AT+CR=1
Enable reporting
OK
ATD1234567890
Dial remote modem
OK
+CR: REL ASYNC
Call connected at DTE rate of 9600
CONNECT ASYNC 9600