ARU未接通问题，请大虾指教
主叫没出现任何起呼信令，被叫却有Paging Response，出现一次未接通，后台查看被叫占用小区，在这个区间出现一次SD掉话，但为何主叫没有任何接入信令？谢谢大家
主叫信令如下：
Down DL RR Paging Request Type 1 08:50:35.085
Down DL RR System Information Type 4 08:50:35.085
Down DL RR Paging Request Type 2 08:50:35.085
Down DL RR Paging Request Type 1 08:50:35.085
Down DL RR Paging Request Type 2 08:50:35.085
Down DL RR Paging Request Type 1 08:50:35.085
Down DL RR Paging Request Type 1 08:50:35.085
Down DL RR Paging Request Type 1 08:50:35.085
Down DL RR Paging Request Type 1 08:50:35.085
Down DL RR Paging Request Type 2 08:50:35.085
Down DL RR System Information Type 13 08:50:35.085
Down DL RR Immediate Assignment 08:50:35.085
Down DL RR Immediate Assignment 08:50:35.085
Down DL RR Paging Request Type 1 08:50:35.085
Down DL RR Paging Request Type 1 08:50:35.085
Down DL RR Paging Request Type 1 08:50:35.085
Down DL RR Paging Request Type 1 08:50:35.085
Down DL RR Paging Request Type 1 08:50:35.100
Down DL RR System Information Type 2ter08:50:35.132
Down DL RR System Information Type 15 08:50:35.168
Down DL RR Paging Request Type 1 08:50:35.176
Down DL RR Paging Request Type 1 08:50:35.224
Down DL RR Paging Request Type 1 08:50:35.240
Down DL RR Immediate Assignment 08:50:35.268
Down DL RR Immediate Assignment 08:50:35.288
Down DL RR Paging Request Type 1 08:50:35.316
Down DL RR System Information Type 3 08:50:35.370
Down DL RR Paging Request Type 1 08:50:35.460
Down DL RR Paging Request Type 1 08:50:35.552
Down DL RR System Information Type 4 08:50:35.600
Down DL RR Paging Request Type 2 08:50:35.648
Down DL RR Immediate Assignment 08:50:35.664
Down DL RR Paging Request Type 2 08:50:35.692
Down DL RR Immediate Assignment 08:50:35.712
Down DL RR Paging Request Type 1 08:50:35.760
Down DL RR Paging Request Type 1 08:50:35.784
Down DL RR Paging Request Type 3 08:50:35.804
Down DL RR System Information Type 1 08:50:35.836
Down DL RR Paging Request Type 1 08:50:35.900
Down DL RR Paging Request Type 1 08:50:35.928
Down DL RR Paging Request Type 1 08:50:35.976
Down DL RR System Information Type 2 08:50:36.084
Down DL RR Paging Request Type 1 08:50:36.924
Down DL RR System Information Type 3 08:50:37.768
Down DL RR Paging Request Type 1 08:50:37.864
Down DL RR Paging Request Type 1 08:50:38.804
Down DL RR System Information Type 15 08:50:38.920
Down DL RR Paging Request Type 2 08:50:39.744
Down DL RR Paging Request Type 2 08:50:40.687
Down DL RR System Information Type 15 08:50:40.804
Down DL RR Paging Request Type 1 08:50:41.627
Down DL RR Paging Request Type 1 08:50:42.571
Down DL RR System Information Type 3 08:50:43.372
Down DL RR Paging Request Type 1 08:50:43.511
Down DL RR Paging Request Type 1 08:50:44.451
Down DL RR System Information Type 15 08:50:44.567
Down DL RR Paging Request Type 1 08:50:45.396
Down DL RR System Information Type 3 08:50:46.271
Down DL RR Paging Request Type 1 08:50:46.335
Down DL RR System Information Type 15 08:50:46.451
Down DL RR Paging Request Type 3 08:50:47.275
Down DL RR Paging Request Type 1 08:50:48.220
Down DL RR System Information Type 15 08:50:48.332
Down DL RR Paging Request Type 1 08:50:49.159
Down DL RR System Information Type 3 08:50:49.251
Down DL RR Paging Request Type 1 08:50:50.100
Down DL RR System Information Type 3 08:50:50.347
Down DL RR Immediate Assignment 08:50:51.055
Down DL RR System Information Type 3 08:50:51.479
Down DL RR Immediate Assignment 08:50:51.983
Down DL RR Paging Request Type 1 08:50:52.043
Down DL RR Paging Request Type 1 08:50:52.947
Down DL RR Paging Request Type 1 08:50:53.867
Down DL RR Paging Request Type 1 08:50:54.811
从信令上来看，主叫一直处于空闲状态，而被叫却有个寻呼相应，这个应该是别人打的，被叫还没来得及反应就被挂断了。。。。。