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This document outlines the process for mobile originated and terminated calls in 3G networks. It describes the steps for a mobile originating call in 3 parts and a mobile terminated call in 3 parts, including setting up the GTP tunnel for transport. The document breaks down the end-to-end call flows for 3G connections.








Introduction to the 3G call flow mechanism.
Detailed breakdown of Mobile Originated Call (MOC) process divided into three parts.
An overview of the Non-Real Time (NRT) GTP Tunnel Setup procedure.
Detailed breakdown of the Mobile Terminated Call (MTC) process divided into three parts.