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LTE: Is it possible for a UE/Dongle to goto PS mode 2 directly when it cannot attach in CS/PS mode 1?

+3 votes
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LTE: Is it possible for a UE/Dongle to goto PS mode 2 directly when it cannot attach in CS/PS mode 1?
posted Mar 24, 2015 by anonymous

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+1 vote

In TS 23.221 7.2a, there is a note describe that "Whether to perform combined EPS/IMSI attach/combined TA/LA Update or EPS attach/TAU for the case of "IMS PS Voice preferred" is to be evaluated in each release of the specifications.", but I can not find any information about that.

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