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CSFB failure

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MO UE SendESR

MT did SuccessfullyRRC connectionsetup but don’t seeany paging orExtended servicere uest

CSFB MO! CSFB Failure!"#MOUE!l#

MTUE!l#

UE re-directs r!" LTE t!UMT# $ith e%AT &egging as'#() M* UTRA+ Active call

ailure ,ut can see UE "!ves

t! UMT# ine

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RRC

Connectionsetup in$cd%a

"&C Updatesuccessful

CSFB MO! CSFB Failure!"#MOUE!l#

MTUE!l#

MT UE is d!ing registrati!nand Authenticati!n ,ut

d!n.t see any E/tendedservice re uest instead itd!es the de ault E # ,earersetu&

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Redirectionsuccess

R&Bsetup

UE released RRCin "TE

CSFB MO! CSFB Failure!"#MOUE!l#

MTUE!l#

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'S originationsuccess in MO

R(C disconnected in)" * MO pegged as afailure

CSFB MO! CSFB Failure!"#MOUE!l#

MTUE!l#

MT UE g!es t! the

ne/t call

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Than4s