摘要
在TD-SCDMA语音测试过程中,经常发现呼通失败原因是由于主叫或被叫用户RAB指派失败,原因值为214,显示原因为requested circuit/channel not available,且该现象没有规律性可循。经过一系列的排查,最终定位为DSP内存异常变化导致。
In the process of TD-SCDMA voice test,some calling failure occurs due to calling or calledparty RAB assignment failure. With the errorcode 204, the reason is shown as ＂requested circuit∕channel not available＂. After a series of screening, itis found that the failure is caused by the abnormalchange in DSP memory.
出处
《现代电信科技》
2014年第4期60-63,共4页
Modern Science & Technology of Telecommunications
