Mobile-Terminated Short Message Example

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Mobile-Terminated Short Message Example

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Picture 3 depicts the successful MT–SM scenario for GSM.

Picture 3. MT–SM Scenario (GSM)

1.	The short message is submitted from the ESME to the SMSC.
2.	After completing its internal processing, the SMSC interrogates the HLR and
	receives the routing information for the mobile subscriber.
3.	The SMSC sends the short message to the MSC using the forward short
	message operation.
4.	The MSC retrieves the subscriber information from the VLR. This operation
	may include an authentication procedure.
5.	The MSC transfers the short message to the MS.
6.	The MSC returns to the SMSC the outcome of the forwardShortMessage
	operation.
7.	If requested by the ESME, the SMSC returns a status report indicating delivery
	of the short message.

Picture 4. MT Short Message Scenario (IS–41)

1.	The short message is submitted from the ESME to the SMSC.
2.	The SMSC sends an acknowledgement to the ESME, indicating reception of t
	he short message.
3.	After completing its internal processing, the SMSC interrogates the HLR.
4.	The HLR sends the routing information for the mobile subscriber to the
	SMSC.
5.	The SMSC sends the short message to the MSC using the SMSDPP Invoke
	operation.
6.	The MSC transfers the short message to the MS.
7.	The MS returns an acknowledgement to the MSC.
8.	The MSC returns to the SMSC the outcome of the SMSDPP operation.
9.	If requested by the ESME, the SMSC returns a delivery receipt indicating
	successful delivery of the short message.

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