Telecontrol equipment and systems - telecontrol protocols compatible with iso standards and itu - t recommendations - functional profile for providing the connection - oriented transport service in end system connected via permanent access to a packet switched data network 遥控设备和系统.与iso标准和itu - t推荐规程一致的遥控协议.在经由永久性存取与包交换数据网络连接的端系统中提供定向连接传输服务的功能界面
In this thesis , the basic conception and the technical contents of ip call center are described . the thesis also has a detailed descr iption of the conception of ip pbx , the basic technology applied in ip pbx and h . 323 protocol 本文阐述了ip呼叫中心的基本概念和相关技术，并在此基础上分析了ip呼叫中心的优势及存在的问题，同时对ippbx的概念和关键技术及实现包交换网络的多媒体通信的h . 323协议进行了详尽的阐述。
The developments with rapid change of technology make network and terminal station , business and management full of intelligence , ip packets is almost anywhere , the exchanges of wrapped packets go into the trend , and it finally will form the high intelligent network of new generation 技术的日新月异的发展，使网络与终端、业务与管理都充满智能； ip几乎无所不在，包交换成大势所趋；最终将形成高智能化的新一代网络。
Information technology - international standardized profile tannnn - connection - mode transport service over connectionless - mode network service - ta1111 ta1121 profiles including subnetwork - dependent requirements for x . 25 packet - switched data networks using virtual calls 信息技术.国际标准数据区tannnn .无连接模式网络服务器上面的连接模式传输服务器. ta1111 ta1121数据区包括用于虚拟传呼的x . 25数据包交换数据网络的子网络相关要求
Firstly , the task , structure , technology and function of the existing dispatch system were introduced , whose key technology is based on the tdm and time division switch like pstn . further , the developing direction of pstn is based on ip , the pocked switch system and network , and also the dispatch system of the manned space flight launch base will transmit multimedia information on ip 首先，介绍了现有调度系统的任务、结构、技术和功能，可以看出，其技术核心是时分多路复用和时分交换技术，现在公用交换电话网( pstn )正向基于ip的包交换系统和网络发展，载人航天发射场调度系统也将利用ip网络技术传输多媒体指挥信息。
Generally speaking , there are noises in the transmission channels , e . g . , internet , wireless channel , and data packets may lose in the packet - switched network . for these reasons , it can ’ t be ensured that there is no error in the video transmitting network , and it can ’ t be avoided that error comes out in the video data when transmitting 目前的传输信道通常是有噪音干扰的,另外在包交换网络中可能会出现数据包丢失等情况,因此,在实际的视频传输网络中不能保证无误的传输,视频数据在传输中出现差错是不可避免的。
Abstract : this paper propsed an idea that the optical network and ip network will develop parallelly for long time , analysed the important meaning of oxc and oadm in the future high speed information network , and pointed out that oxc , oadm , otdm and ops represent the development direction of future optical network 文摘:提出了未来光网络与ip网络平行发展，长期共存的思想.分析了光交叉连接设备（ oxc ）和光分插复用设备（ oadm ）在未来光网络中的重要意义.并明确了光时分复用（ otdm ）和光包交换（ ops ）是未来光网络的发展方向
