This article explains SMI service on the SG7000.

The short message service (SMS) is a popular value-added service. It brings convenience to users and profits to network operators. The SMS can also be used to perform illegal activities and send junk messages, thus bringing inconvenience to users.

The SMI service is designed to prevent illegal activities and junk messages from reaching the users. Through checking and monitoring messages, some illegal contents or junk messages are filtered.

Advantages of implementing the SMI service are as follows:

·         To users: avoiding inconvenience and antipathy brought by junk messages

·         To network operators: providing customized and differentiated services, implementing social responsibilities, and winning excellent branding effect

The SMI service can only affect messages sent from the non-local users to the local users or to the users who have roamed from other areas to the local area. When a local user roams to a non-local area, the messages sent to this user will not be intercepted.

In the SMI service, the SG forwards the messages to the local SMSC that has the SMI function. Then the SMSC checks and filters the messages.

Device Coordination requirements:

According to the networking mode, device coordination is as follows:

·         The GT translation data of the MSC-Number must be configured on the HSTP. After GT translation, the message must be forwarded to the SG.

·         The local MTP3 transfer data must be configured on the LSTP.

·         The GT translation data of the MSC-Number must be configured on the SG. After GT translation, the message must be forwarded to the MSC.

·         The MTP3 route to the local MSC must be configured on the SG.

Different networking modes have different device coordination requirements.

SMI Service Implementation:

The SMI service is implemented as follows:

·         A non-local SMSC sends an MT message to a local user or a user who has roamed from a non-local area to the local area.

·         The HSTP identifies that the message is addressed, based on the MSC-Number and then performs GT translation according to the modified route data to forward the message to the SG.

·         The SG identifies that the message is an MT message and then forwards it to the local SMSC that has the SMI function.

·         If the SMSC identifies that the message is a junk message through the monitoring system, it imitates the mobile station (MS) to return a message to the non-local SMSC, indicating the message is successfully received.

·         If the SMSC identifies that the message is a normal message, it forwards the MT message to the destination MSC through the LSTP. Then the destination MSC forwards the message to the MS.

·         The destination MSC returns a message to the local SMSC through the LSTP, indicating that the MS has successfully received the message.

·         The local SMSC sends a message to the non-local SMSC, indicating that the MS has successfully received the message.

 

 

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