这个是RANAP的cause code,在TS25.413中定义。可能的原因是UTRAN或UE不支持SGSN侧的加密和完整性检查算法,原文如下:
“If the UTRAN or the UE is unable to support the ciphering and/or integrity protection algorithms specified in the SECURITY MODE COMMAND message, then the UTRAN shall return to the CN a SECURITY MODE REJECT message with cause value "Requested Ciphering and/or Integrity Protection Algorithms not Supported". If the radio interface Security Mode Control procedure fails, a SECURITY MODE REJECT message shall be sent to the CN with cause value "Failure in the Radio Interface Procedure".“。
欢迎光临 51学通信技术论坛 (http://51xuetongxin.com/bbs/) | Powered by Discuz! X2 |