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In LTE-WCDMA handover, should the new PDP context be activated again or the old one modified/updated?

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After a handover from LTE to WCDMA I noticed that there is always "Activate PDP context request" message.
However, in documentation, I found multiple call flows without that message, but with "Update PDP context".
What causes these differences?

Thank you.

posted Sep 28, 2016 by anonymous

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