33.040 电信系统 标准查询与下载

YD/T 1325-2004 无触点感应式交流稳压器

本标准规定了无触点感应式交流稳压器 (以下简称稳压器) 的定义、分类与命名、技术要求、试验 方法、检验规则、标志、包装、运输和贮存。 本标准适用于交流电压为 500V 以下稳压器。

Contactless Inductive AC Voltage stabilizer

YD/T 695-2004 市话通信系统过电压过电流防护原则及技术要求

本标准规定了市话通信系统(由铜芯双纹线市话通信电缆连接的交换设备、接人网设备相关部分和总配线架、终端设备等)的过电压过电流防护原则及技术要求。 本标准适用于市话通信系统的过电压过电流危险影响、耐受性和防护性能的检验，不包括过电压过电流所引起的干扰。

Principles and technical requirements of protection against overvoltages and overcurrents in local telecom system

LST EN 301 753 V1.2.1-2004 固定无线电系统；多点设备和天线；多点数字固定无线电系统和天线的通用协调标准，涵盖指令 1999/5/EC 第 3.2 条的基本要求

Fixed Radio Systems; Multipoint equipment and antennas; Generic harmonized standard for multipoint digital fixed radio systems and antennas covering the essential requirements under article 3.2 of the Directive 1999/5/EC

YD/T 1300-2004 同步数字体系(SDH)网络性能技术要求——通道、复用段和再生段误码

本标准规定了同步数字通道、SDH 馥用段和再生段的誤塊事件、參數，規範同步數字通道誤碼性能 指标。 本标准适用于 SDH 误码性能的网络规划和设计。公用传送网和其他传送网可参照执行。

Technical requirements of SDHnetwork performance Error for path,multiplex and regenerator sections

LST EN 301 751 V1.2.1-2004 固定无线电系统；点对点设备和天线；点对点数字固定无线电系统和天线的通用协调标准，涵盖 1999/5/EC 指令第 3.2 条的基本要求

Fixed Radio Systems; Point-to-Point equipment and antennas; Generic harmonized standard for Point-to-Point digital fixed radio systems and antennas covering the essential requirements under article 3.2 of the 1999/5/EC Directive

LST EN 301 753 V1.1.1-2003 固定无线电系统；点对多点设备和天线；点对多点数字固定无线电系统和天线的通用协调标准，涵盖指令 1999/5/EC 第 3.2 条的基本要求

Fixed Radio Systems; Point-to-Multipoint equipments and antennas; Generic harmonized standard for Point-to-Multipoint digital fixed radio systems and antennas covering the essential requirements under article 3.2 of the Directive 1999/5/EC

LST EN 301 751 V1.1.1-2003 固定无线电系统；点对点设备和天线；点对点数字固定无线电系统和天线的通用协调标准，涵盖 1999/5/EC 指令第 3.2 条的基本要求

Fixed Radio Systems; Point-to-Point equipments and antennas; Generic harmonized standard for Point-to-Point digital fixed radio systems and antennas covering the essential requirements under article 3.2 of the 1999/5/EC Directive

YD/T 1288-2003 基于H.323和基于会话初始协议(SIP)的IP电话互通技术要求

Technical specification for IP telephony interworking based on H.323 and SIP

YD/T 1269-2003 通信用燃气轮机发电机组

Gas turbine generator sets for telecommunications

YD/T 1270-2003 无触点补偿式交流稳压器

Contactless compensatory A.C voltage stabilizer

YD/T 1271-2003 通信设备用铃流信号发生器

本标准规定通信用模块式铃流信号发生器的技术要求、试验方法、检验规则和包装贮运。 本标准适用于通信用模块式铃流信号发生器 (以下简称铃流模块)。

Ring generator for telecommunication equipment

JJG 977-2003 IC卡公用电话计时计费装置检定规程

Timing and Charging Device for IC Card Public Telephone

CAN/CSA-ISO/IEC 13863:2002(R2011) 信息技术 系统间的电信和信息交换 专用综合业务网络 规范、功能模型和信息流 路径替换附加网络功能

This National Standard of Canada is equivalent to International Standard ISO/IEC 13863:1998 (second edition, 1998-12-15). 1 Scope This International Standard specifies the Path Replacement additional network feature (ANF-PR), which is applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574. ANF-PR is a feature which applies to an established call, allowing that call's connection between Private Integrated Services Network Exchanges (PINXs) to be replaced by a new connection. If the new connection is required to satisfy certain criteria, ANF-PR should be used in conjunction with other supplementary services and/or ANFs. Annex A gives examples of the circumstances under which ANF-PR can be used and criteria which can govern the selection of the new connection. Additional network feature specifications are produced in three stages, according to the method described in CCITT Recommendation I.130 for supplementary services. This International Standard contains the stage 1 and stage 2 specifications of ANF-PR. The stage 1 specification (clause 6) specifies the feature as seen by an entity which initiates path replacement, the ANF-PR user. The stage 2 specification (clauses 7, 8 and 9) identifies the functional entities involved in the feature and the information flows between them. Clause 7 contains the stage 2 specification for basic operation of the feature. Clause 8 contains the stage 2 specification for an enhanced mode of working which can be employed when supported by all the equipment involved. It allows some of the elements of the old connection to be re-used. Clause 9 contains the stage 2 specification for an optional enhancement of the basic operation of the feature. It allows the ANF-PR user to be located in any PINX in the old connection and to decide the direction of the new connection.

Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Path replacement additional network feature

YD/T 1235.2-2002 通信局(站)低压配电系统用电涌保护器测试方法

Testing methods for surge protective devices connected to low-voltage distribution systems of telecommunication stations/sites

YD/T 1235.1-2002 通信局(站)低压配电系统用电涌保护器技术要求

Performance requirements for surge protective devices connected to low-voltage distribution systems of telecommunication stations/sites

DLA MIL-D-3954 C (3)-2002 电子波导仿真载荷的一般规范

This amendment forms a part of MIL-D-3954C, dated 19 November 1973, and is approved for use by all Departments and Agencies of the Department of Defense.

DUMMY LOADS, ELECTRICAL WAVEGUIDE, GENERAL SPECIFICATION FOR

TB/T 2169-2002 铁路中间站通信电源设备系列及主要技术条件

本标准规定了铁路中间站用通信电源设备及铁路通信站用组合电源设备的通用技术要求。 本标准适用于交流标称电压为220V/380V、标准频率为50Hz，交流输电流不大于100A，直流额定电压为-48V、直流输出电流不大于200A，以低压电器和电子器件组成的铁路中间站电源柜。 本标准可作为“铁路中间站电源柜”及“铁路通信站组合电源柜”产品设计、制造、采购、使用及质量检验的依据。

Telecommunication power supply series and main technical conditions for intermediate railway station

YD/T 799-2002 通信用阀控式密封铅酸蓄电池

本标准规定了通信用阀控式密封铅酸蓄电池的技术要求、检验方法、检验规则和标志、包装、运输贮存。 本标准适用于生产企业、使用单位和质量监督部门对产品质量的检验。

Valve-Regulated Lead Acid Battery for Telecommunications

YD/T 1173-2001 通信电源用阻燃耐火软电缆

Flame-retardant and Fire Resistant Flexible Cables for Power Supply System of Communication

CNS 14578-2001 混合式用户专用交换机系统

本标准适用于内线相互问及中继线与内线间，经由按键装置执行交换并同时具备按键式电话系统及交换机系统的设备，并可与公众网络交换设备相接的用户自备专用混合式交换机系统，简称混合式用户专用交换机系统。

Hybrid private automatic branch exchange