M17 传输系统组群、频谱安排 标准查询与下载

ITU-T G.734 SPANISH-1993 以1544 kbit/s速率运行的同步数字多路复用设备的特性

This Recommendation defines the characteristics of a synchronous multiplex equipment currently used for applications in dedicated data networks, to combine up to 23 tributary channels at 64 kbit/s in a 1544 kbit/s digital stream.

CHARACTERISTICS OF SYNCHRONOUS DIGITAL MULTIPLEX EQUIPMENT OPERATING AT 1544 kbit/s

ITU-T G.733 SPANISH-1993 以1544 kbit/s速率运行的首要脉码调制多路复用设备的特性

The encoding law used is the m-law as specified in Recommendation G.711. The sampling rate, load capacity and the code are also specified in that Recommendation.

CHARACTERISTICS OF PRIMARY PCM MULTIPLEX EQUIPMENT OPERATING AT 1544 kbit/s

ITU-T G.226-1993 实际链路上的噪声

It should be appreciated that designers are usually concerned, not with particular circuits or links, but with plant that will be used for the establishment of many links.

NOISE ON A REAL LINK

ITU-T X.210-1993 信息技术-开放网络连接-基本参考模式.OSI服务定义规定-数据和开放系统通信和连接-总29页

Information Technology - Open Systems Interconnection - Basic Reference Model: Conventions for the Definition of OSI Services - Data Networks and Open System Communications Open Systems Interconnection - General 29 pp

Information Technology - Open Systems Interconnection - Basic Reference Model: Conventions for the Definition of OSI Services - Data Networks and Open System Communications Open Systems Interconnection - General 29 pp

ITU-T X.218-1993 可靠转换:样式及服务定义-开放系统互联-一般业务定义

The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the International Telecommunication Union. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to

Reliable Transfer: Model and Service Definition - Open Systems Interconnection - General Service Definitions (Study Group VII) 22 pp

ITU-T G.755 FRENCH-1993 以139 264 kbit/s速率运行和以44 736 kbit/s速率复用三个支路的二级数字多路复用设备

The digital multiplex equipment described in this Recommendation is intended for use between networks using different digital hierarchies as specified in Recommendations G.702 and G.802.

DIGITAL MULTIPLEX EQUIPMENT OPERATING AT 139 264 KBIT/S AND MULTIPLEXING THREE TRIBUTARIES AT 44 736 KBIT/S

ITU-T G.754 SPANISH-1993 以139 264 kbit/s速率运行且使用正/零/负码速调整的四级数字多路复用设备

The fourth order digital multiplex system with positive/zero/negative pulse justification as given below is intended for use on digital connection between countries having the same type of justification using any third order digital systems at 34 368 kbit/s.

FOURTH ORDER DIGITAL MULTIPLEX EQUIPMENT OPERATING AT 139 264 kbit/s AND USING POSITIVE/ZERO/NEGATIVE JUSTIFICATION

ITU-T G.753 SPANISH-1993 以34 368 kbit/s速率运行并使用正/零/负码数调整的三级数字多路复用设备

The third order digital multiplex system with positive/zero/negative pulse justification as given below is intended for digital connection between countries having the same type of justification using any second order digital systems at 8448 kbit/s.

THIRD ORDER DIGITAL MULTIPLEX EQUIPMENT OPERATING AT 34 368 kbit/s AND USING POSITIVE/ZERO/NEGATIVE JUSTIFICATION

ITU-T G.752 SPANISH-1993 使用正码速调整,在二级比特率为6312 kbit/s的数字多路复用设备

The third-order digital multiplex equipment using positive justification described below, is intended for use ondigital paths and between countries using 1544 kbit/s and 6312 kbit/s primary and secondary multiplex equipments.

CHARACTERISTICS OF DIGITAL MULTIPLEX EQUIPMENTS BASED ON A SECOND ORDER BIT RATE OF 6312 kbit/s AND USING POSITIVE JUSTIFICATION

ITU-T G.751 SPANISH-1993 使用正码速调整,在三级比特率为34368 kbit/s和在四级比特率为139 264 kbit/s的数字多路复用设备

There should be a 4th-order bit rate of 139 264 kbit/s in the digital hierarchy which is based on the 2nd-order bit rate of 8448 kbit/s.

DIGITAL MULTIPLEX EQUIPMENTS OPERATING AT THE THIRD ORDER BIT RATE OF 34 368 kbit/s AND THE FOURTH ORDER BIT RATE OF 139 264 kbit/s AND USING POSITIVE JUSTIFICATION

ITU-T G.747 FRENCH-1993 二级数字复用设备在6312 kbit/s和复用三个支流在2048 kbit/s.数字传输系统的终端设备方面的操作

The digital multiplex equipment described in this Recommendation is intended for use between networks using different digital hierarchies as specified in Recommendations G.702 and G.802.

SECOND ORDER DIGITAL MULTIPLEX EQUIPMENT OPERATING AT 6312 kbit/s AND MULTIPLEXING THREE TRIBUTARIES AT 2048 kbit/s

ITU-T G.746 SPANISH-1993 以6312 kbit/s速率运行的二级脉冲编码调制多路复用设备特性

The Recommendation describes that the encoding law used is the m-law as specified in Recommendation G.711. The sampling rate, load capacity and the code are also specified in that Recommendation.

CHARACTERISTICS OF SECOND ORDER PCM MULTIPLEX EQUIPMENT OPERATING AT 6312 kbit/s

ITU-T V.14 (REV 1)-1993 在同步承载信道上传输起止式字符-第XVII研究组.第7页

The ITU Telecommunication Standardization Sector @TU-T) is a permanent organ of the International Telecommunication Union.

Transmission of Start-Stop Characters over Synchronous Bearer Channels (Study Group XVII) 7 pp

ITU-T G.231-1993 载波设备的安装

countries not having a national industry for the construction of carrier systems must obtain them from different factories, and that the variations of the dimensions of the racks between different sources of supply do not allow of a simple and economical layout of the cables and efficient use of accommodation

ARRANGEMENT OF CARRIER EQUIPMENT

prEN 28877-1993 信息技术.系统间的通信和信息交换.位于参考点S和T的综合服务数字网络(ISDN)基本存取接口的接口连接器和触点赋值

Information technology; telecommunications and information exchange between systems; interface connector and contact assignments for ISDN basic access interface located at reference points S and T (ISO/IEC 8877:1992)

STAS 6571-1991 防护器材．安全带用绳

Prezentul standard se refer? la fr?nghiile pentru centuri de siguran?? utilizate la lucr?ri efectuate de muncitorii din telecomunica?ii, cariere, construc?ii ?i montaj, precum ?i din domeniul energetic, unde muncitorul, lucr?nd suspendat, este expus c?d

Protective equipment. Ropes for safety belts

IEC 60870-5-1:1990 远动设备和系统 第5部分:传输规约 第1节:传输帧格式

Specifies the basic requirements for services to be provided by the link and physical layers for telecontrol purposes. Establishes standards for coding, formatting and synchronizing data frames. Covers asynchronous data transmission with half duplex and

Telecontrol equipment and systems; part 5: transmission protocols; section one: transmission frame formats

ITU-R INFORME M.901-2 SPANISH-1990 集群移动通信系统的频率分配方法

FREQUENCY ASSIGNMENT METHODS FOR TRUNKED MOBILE RADIO SYSTEMS

ITU-R SM.667 SPANISH-1990 国家频谱管理数据.第1A部分.光谱工程和计算机辅助原则与技术

The CCIR considering: (a) that administrations are facing increasingly voluminous and complex tasks in spectrum management due to the increased use of existing telecommunications and new telecommunications technology; (b) that the efficient solution of spectrum management problems requires data storage, data retrieval, and analysis capabilities, and consequently requires effective spectrum management and application of computer methods; (c) that IWP 1/2 has been tasked to develop recommended standards for computer generated national spectrum management data for exchange between administrations, bearing in mind the advantages of compatibility with standards used for the exchange of data between administrations and the IFRB (Decision 27); (d) that IWP 1/2 has developed standards for computer generated national spectrum management data in the Handbook on Spectrum Management and Computer-aided Techniques.

NATIONAL SPECTRUM MANAGEMENT DATA

ITU-T Q.130-1989 信号序列失败情况下的特殊安排

Special Arrangements in Case of Failures in the Sequence of Signals - Specifications of Signalling Systems Nos. 4 and 5 (Study Group XI) 1 pp

Special Arrangements in Case of Failures in the Sequence of Signals - Specifications of Signalling Systems Nos. 4 and 5 (Study Group XI) 1 pp