telecom • networking • design

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GSM Mobile Originated SMS

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GSM Mobile Originated SMS

This scenario describes the session setup for a GSM originating SMS. This sequence diagram describes the SMS signaling and data transfer between the mobile subscriber and the SMS service center.

SMS is implemented by sending Short message transported via a GSM SDCCH (Standalone Dedicated Control CHannel) signalling channel. Thus they can be received while the user is talking. The MS establishes an SDCCH using RR establishment procedure.

GSM Mobile Originated SMS Signaling Flow Diagram

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