| 1. | Dss1 . 3 telecommunications - digital subscriber signalling system no . 1 - layer 3 overview
电信.第1号数字用户信令系统 |
| 2. | Dss1 - telecommunications - digital subscriber signalling system number 1 - signalling specification for the user signalling bearer service
电信.数字用户信令发送系统no . 1 |
| 3. | Telecommunication - digital subscriber signalling system number 1 - layer 3 signalling specification for circuit - switched bearer services
电信.第1号数字用户信号系统.线路转换载体服务的第3层信令规范 |
| 4. | Integrated services digital network - digital subscriber signalling system no . one protocol - signalling network layer for circuit - mode basic call control - part 1 : protocol specification
综合业务数字网.数字用户信令系统第1协议.电路模式基本呼叫控制用信令网络层.第1部分:协议规范 |
| 5. | Integrated services digital network ; line hunting supplementary service - digital subscriber signalling system no . one - part 1 : protocol specification endorsement of the english version en 301484 - 1 v 1 . 1 . 1 2000 - 04 as german standard
综合业务数字网.寻线补充业务.数字用户用1号信令系统 |
| 6. | Integrated services digital network isdn - digital subscriber signalling system no . one dss1 protocol ; basic call control ; enhancement at the " b " service entry point for virtual private network applications - part 4 : abstract test suite at
产品;规范;标记;包装;通信设备;检验摘要本标准适用于构成通信网设备的产品以下简称产品的储存运输包装。 |
| 7. | Integrated services digital network isdn - explicit call transfer supplementary service - digital subscriber signalling system no . one dss1 protocol - part 5 : test suite structure and test purposes tss tp specification for the network en
本标准行之有效用于和频率100hz及以下的单相异步电动机绕组连接的，以及和三相异步电动机连接从而使这些电动机可由单相系统来供电的电动机电容器以下简称电容器。 |
| 8. | Assigning serial different address code to different subscribers , useful signal is taken out of the same time slot and frequence , and is transmitted with one share channel . at received end , system makes use of completed address code from sending end to do correlative check and take out useful subscriber signal . the other address code signals are treated as broadband disturbing signal which is removed . in radio environment of existing variable disturbtion and muti - way declining , expand frequence signal ’ s broadband characteristics can improve system performance obviously . cdma mobile telecommunication system has some better characteristics , such as anti - disturbing 、 anti - way declining 、 secrecy 、 capacity 、 utilizing rate of frequence resource and so on , than other mobile telecommunication system
Cdma ( codedivisionmultipleaccess )移动通信系统的技术基础是基于扩频技术的码分多址,通过给不同的用户分配各自特定的地址码序列,将处于相同时隙和频率的用户信号分离开来,采用共享信道方式传输信息。在接收端,系统利用与发送端完全一致的本地地址码对接收信号进行相关检测,提取需要的用户信号,而将其他使用不同码型的信号视为宽带干扰而从中剔除掉。 |
