LTE认证考试VoLTE考试单项选择题每日一练(2019.12.16)

A.20ms
B.80ms
C.160ms
D.40ms
E.320ms

A.SCCAS
B.PCRF
C.IP
D.P-CSCF

A.10ms
B.20ms
C.5ms
D.1ms

A.2～3
B.3～5
C.0.5～2

A.UPDATE
B.re-INVITE
C.100Trying
D.183response