NAL Research Corporation (TN2012-02-V1.0)
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Note:
A user can send an MO-SBD message and request a detach at the same time by using
the +SBDI command. The +SBDI command always requests a detach.
A.8.105 +SBDI – Short Burst Data: Initiate an SBD Session
Note:
The +SBDI command is provided for backwards compatibility with existing DTEs which
do not use SBD Ring Alert functionality. For SBD calls invoked with this command:
The SBD session type is fixed at type 0 – MO call
The SBD Delivery Short Code will be the value specified by the +SBDDSC command
An SBD Detach is performed as part of the call
No SBD location update is performed
DTEs requiring SBD Ring Alert functionality should use the exSBDIX command.
Exec Command:
+SBDI
This command initiates an SBD session between the A3LA-RS and the GSS. If there is a
message in the mobile originated buffer it will be transferred to the GSS. Similarly if there is
one or more messages queued at the GSS the oldest will be transferred to the A3LA-RS and
placed into the mobile terminated buffer.
The message, if any, in the mobile originated buffer will be sent from the A3LA-RS to
the GSS
If there is a message queued at the GSS it will be transferred to the A3LA-RS and
placed into the mobile terminated buffer
Command Response:
+SBDI:<MO status>,<MOMSN>,<MT status>,<MTMSN>,<MT length>,<MT queued>
where:
<MO status>: MO session status provides an indication of the disposition of the mobile
originated transaction. The field can take on the following values:
0
No SBD message to send from the A3LA-RS
1
SBD message successfully sent from the A3LA-RS to the GSS
2
An error occurred while attempting to send SBD message from A3LA-RS to GSS
<MOMSN>: The Mobile Originated Message Sequence Number (MOMSN) is a value assigned by
the A3LA-RS when sending a mobile-originated message to the GSS. This value is incremented
each time an SBD session is successfully completed between the A3LA-RS to the GSS. This
wraparound counter can range from 0 to 65535.
<MT status>: The MT status provides an indication of the disposition of the mobile terminated
transaction. The field can take on the following values:
0
No SBD message to receive from the GSS
1
SBD message successfully received from the GSS
2
An error occurred while attempting to perform a mailbox check or receive a
message from the GSS