CSFB vs. SRVCC, or how to “sudo make me Voice over LTE” – take 3

16 Sep

Windancer - Stairway to ...Heaven?

Ref:

CSFB vs. SRVCC, or how to “sudo make me Voice over LTE” – take 1

CSFB vs. SRVCC, or how to “sudo make me Voice over LTE” – take 2

by Alex

it was about time to display a nice message flow diagram of the messages being exchanged for Combined EPS/IMSI Attach

Enjoy!

combined

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One Response to “CSFB vs. SRVCC, or how to “sudo make me Voice over LTE” – take 3”

  1. cristinacrow September 16, 2013 at 5:06 pm #

    There were 2 errors in the message flow: Initial Context Setup Response message missing, and the direction of the Authentication Request/Response exchange were reversed. Could you please update?
    Many thanks!

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