1 Unassiagned number(未分配的号码（空号）) 3 No route to destination(无至目的地的路由) 6 Channel unacceptable(不可接受的信道) 16 Normal clearing(正常清除) 17 User busy(用户忙) 18 No user responding(无用户响应) 19 User alerting,no answer(已有用户提醒，但无应答) 21 Call rejected(呼叫拒绝) 22 Number cha
一、 索引和概述 21.101 Specifications and Reports of 3G 21.905 Vocabulary for 3GPP Specifications 23.002 UMTS network arthitecture 23.003 Numbering, addressing and identification 23.008 Organization of subscriber data 23.121 Evolution of the GSM platform.
