在MS1锁GSM，MS2自由双模情况下互拨，出现被叫MS2（WCDMA）上发Disconnect，然后主叫MS1（GSM）上发Disconnect，这两个Disconnect的层三消息Cause：34，No Circuit/Channel Available
Class：Resource Unavailable。
这个情况出现过2次了，都没有想明白。
具体层三信令如下：

6568   MS1 W   16:19:51.515  RR System Information Type 5 ter
6569   MS1 W   16:19:51.718  RR Measurement Report
6570   MS1 W   16:19:52.125  RR Measurement Report
6571   MS1 W   16:19:52.531  RR System Information Type 6
6572   MS1 W   16:19:52.531  RR Measurement Report
6573   MS1 W   16:19:52.937  RR System Information Type 5
6574   MS1 W   16:19:53.140  RR Measurement Report
6575   MS1 W   16:19:53.546  RR System Information Type 5 ter
6576   MS1 W   16:19:53.546  RR Measurement Report
6577   MS1 W   16:19:53.953  RR Measurement Report
6578   MS1 W   16:19:54.359  RR System Information Type 6
6579   MS1 W   16:19:54.562  RR Measurement Report
6580   MS1 W   16:19:54.968  RR System Information Type 5
6581   MS1 W   16:19:54.968  RR Measurement Report
6582   MS2 W   16:19:55.156  DCCH Measurement Report
6583   MS2 W   16:19:55.359  DCCH Active Set Update
6584   MS2 W   16:19:55.359  DCCH Active Set Update Complete
6585   MS2 W   16:19:55.359  DCCH Measurement Control
6586   MS2 W   16:19:55.359  DCCH Downlink Direct Transfer
6587   MS2 W   16:19:55.359  CC Disconnect(MS2 CC Disconnect,Class:  Resource Unavailable)
6588   MS2 W   16:19:55.359  CC Release
6589   MS2 W   16:19:55.359  DCCH Uplink Direct Transfer
6590   MS2 W   16:19:55.359  DCCH Downlink Direct Transfer
6591   MS2 W   16:19:55.359  CC Release
6592   MS1 W   16:19:55.375  RR System Information Type 5 ter
6593   MS1 W   16:19:55.375  RR Measurement Report
6594   MS1 W   16:19:55.375  CC Disconnect
6595   MS1 W   16:19:55.375  CC Release
6596   MS2 W   16:19:55.765  DCCH RRC Connection Release
6597   MS2 W   16:19:55.765  DCCH RRC Connection Release Complete