It is a handbook of UMTS/LTE/EPC basic call flows. This document is originally edited by Justin MA and it is free to share to everyone who are interested. All reference/resource are from internet. If there is any copy-right issue, please kindly inform Justin by majachang@gmail.com. Thanks for your reading!

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LTELTELTELTE BasicBasicBasicBasic CallCallCallCall FlowsFlowsFlowsFlows
By Justin MA Created: June 2014 Updated: 2014_0625
LTE and SAE netwroks
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LTE Attach Callflow
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Ref: Ericsson
RRC Connection Setup

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RRC Connection Setup

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Ref: Ericsson