A.True

B.False

A.14

B.7

C.12

D.6

A.False

B.True

A.In a network that supports LTE VoIP, if dual AP configuration is used, only one default EPS bearer will be established each time the power is registered.

B.In order to support VOLTE in an LTE network, IMS and PCRF network elements need to be configured.

C.EPS bearer is a LTE network QoS basic management unit, if necessary in LTE network to provide different QoS service, it is necessary to establish different EPS bearers

D.eSRVCC optimizes the near-end session update process, and the media switch point is changed to the called side network element, which shortens the switch duration.

A.A resource block is fixed at 180KHz in the frequency domain of RB, fixed to 12 subcarriers of 15KHz, and the time domain is 0.5ms, that is, one subframe.

B.A resource block is fixed at 180KHz in the frequency domain of RB, fixed to 12 subcarriers of 15KHz, and the time domain is 1ms, that is, one subframe.

C.A resource block is fixed at 180KHz in the frequency domain of RB, may be 12 subcarriers of 15KHz or may be 24 subcarriers of 7.5KHz, the time domain is 0.5ms, that is, one subframe.

D.A resource block is fixed at 180KHz in the frequency domain of RB, may be 12 subcarriers of 15KHz or may be 24 subcarriers of 7.5KHz, the time domain is 1ms, that is, one subframe.