Metadata
Author: LASER-wikipedia2
Data
English[en]
Size of TMSI is 4 octet with full hex digits and can't be all FF because the SIM uses 4 octets with all bits equal to 1 to indicate that no valid TMSI is available.
Chinese[zh]
TMSI的长度为4字节,全由16进制数字表示,并且不可以全为“FF”,因为SIM卡使用4个每一个位都是1的字节来表示没有合法的可用的TMSI。