![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
信令中LTE侧回复SnChangeRefuse的原因()。
A.目标NR站点未和源锚点配置邻区关系
B.目标NR站点和源锚点之间缺少ENDC_X2链路
C.目标小区S1链路状态异常
D.4G和5G基站站点间ENDC_X2链路异常
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.目标NR站点未和源锚点配置邻区关系
B.目标NR站点和源锚点之间缺少ENDC_X2链路
C.目标小区S1链路状态异常
D.4G和5G基站站点间ENDC_X2链路异常
A.SgNBReleaseCommand
B.SgNBReleaseRequest
C.RRCConnectionRequest
D.SgNBModificationRequest
A.SgNB Modification Request
B.SgNB Release Command
C.RRC Connection Request
D.SgNB Release Request
A.RRCconnectionsetupcomplete
B.RRCconnectionrequest
C.RRCconnectionreconfigurationcomplete
D.RRCconnectionsetup
A.T300定时器
B.NCS设置
C.PCI
D.NG链路
B.媒体路由:主叫UE→主叫所在地(TD-LTE/EPC)→主叫所在地VoLTESBC→被叫归属地VoLTESBC→被叫所在地VoLTESBC→被叫所在地(TD-LTE/EPC)→被叫UE
C.信令过程:主叫UE→主叫所在地VoLTESBC/P-CSCF→主叫所在地S-CSCF→主叫所在地AS→主叫所在地S-CSCF→被叫归属省I-CSCF→被叫归属省S-CSCF→被叫归属VoLTEAS→被叫归属省S-CSCF→被叫所在地VoLTESBC/P-CSCF→被叫UE
D.媒体路由:主叫UE→主叫所在地(TD-LTE/EPC)→主叫所在地VoLTESBC→被叫所在地VoLTESBC→被叫所在地(TD-LTE/EPC)→被叫UE
A.0
B.1-2
C.63
D.63以上