Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
YD/T 4423-2023 |
Technical requirements for intelligent data analysis and processing based on telephone channels {译} 基于电话信道的数据智能分析和处理技术要求 |
China Telecommunication Industry
Standards telephone |
English PDF |
TB/T 3577-2022 |
Railway tunnel emergency telephone system {译} 铁路隧道应急电话系统 |
China Railway Transport Industry
Standards telephone |
English PDF |
YD/T 4128-2022 |
Green Design Product Evaluation Technical Specifications Fixed telephone {译} 绿色设计产品评价技术规范 固定电话 |
China Telecommunication Industry
Standards telephone |
English PDF |
JR/T 0188—2020 |
Specification for outbound telephone dialing services in the banking industry {译} 银行业电话外拨服务规范 |
China Finance Industry
Standards telephone |
English PDF |
JT/T 1019.6-2016 |
(Traffic systems - Monitoring telephone systems - Part 6: Knowledge base data elements) 12328交通运输服务监督电话系统 第6部分:知识库数据元 |
China Highway & Transportation
Standards telephone |
English PDF |
JT/T 1019.5-2016 |
(Traffic systems - Monitoring telephone systems - Part 5: Classification statistics) 12328交通运输服务监督电话系统 第5部分:分类统计指标 |
China Highway & Transportation
Standards telephone |
English PDF |
JT/T 1019.4-2016 |
(Traffic systems - Monitoring telephone systems - Part 4: Business classification codes) 12328交通运输服务监督电话系统 第4部分:业务分类代码 |
China Highway & Transportation
Standards telephone |
English PDF |
JT/T 1019.3-2016 |
(12328 Transport service supervision telephone systems - Part 3: Data exchange and information sharing interface technical requirement) 12328交通运输服务监督电话系统 第3部分:数据交换与信息共享接口技术要求 |
China Highway & Transportation
Standards telephone |
English PDF |
JT/T 1019.2-2016 |
(12328 Transport service supervision telephone systems - Part 2: General Technical Requirements) 12328交通运输服务监督电话系统 第2部分:总体技术要求 |
China Highway & Transportation
Standards telephone |
English PDF |
JT/T 1019.1-2016 |
(12328 Transport service supervision telephone systems - Part 1: Business Process Specification) 12328交通运输服务监督电话系统 第1部分:业务流程规范 |
China Highway & Transportation
Standards telephone |
English PDF |
YD/T 695-2015 |
(City telephone communication system over-voltage over-current protection principles and technical requirements) 市话通信系统过电压过电流防护原则及技术要求 |
China Telecommunication
Standards telephone |
English PDF |
JR/T 0123.4-2014 |
(Non-financial institution payment service facilities standardized testing - Part 4: Fixed telephone payment) 非金融机构支付业务设施检测规范 第4部分:固定电话支付 |
China Finance
Standards telephone |
English PDF |
YD 5084.1-2014 |
(Switching equipment to detect anti-seismic performance specifications Part I: program-controlled digital telephone switches) 交换设备抗地震性能检测规范第一部分:程控数字电话交换机 |
China Telecommunication
Standards telephone |
English PDF |
YD 5077-2014 |
(Fixed telephone switching network engineering acceptance) 固定电话交换网工程验收规范 |
China Telecommunication
Standards telephone |
English PDF |
YD 5076-2014 |
(Fixed Switched telephone Network engineering design specifications) 固定电话交换网工程设计规范 |
China Telecommunication
Standards telephone |
English PDF |
YDB 142.2-2013 |
The parameter and measurement of energy saving for multimedia telecommunications terminal. Part 2: Visual telephone 多媒体终端设备节能参数和测试方法 第2部分:可视电话 |
China Telecommunication
Standards telephone |
English PDF |
SN/T 1429.10-2012 |
Rules for the inspection of information technical equipments for import and export. Part 10: Energy efficiency for cordless telephone 进出口信息技术设备检验规程 第10部分:无绳电话的能效 |
China Import Export Inspection
Standards telephone |
English PDF |
YD/T 907-2011 |
Arrangement of digits, letters and symbols on telephones and other devices that can be used for gaining access to a telephone network 接入电话网的电话机和其它设备上用于发号的数字、字母和符号规定 |
China Telecommunication
Standards telephone |
English PDF |
JJF 1279-2011 |
The program for pattern evaluation of signle and dispersion controled centrely telephone accounter 单机型和集中管理分散计费型电话计时计费器型式评价大纲 |
China Metrological
Standards telephone |
English PDF |
DL/T 598-2010 |
Technical specifications for automatic exchange telephone network of electric power system 电力系统自动交换电话网技术规范 |
China Electricity & Power
Standards telephone |
English PDF |
YD/T 2167-2010 |
The technical requirement and test method of 3G video telephone service between operators 第三代移动通信(3g)可视电话业务网间互通技术要求和测试方法 |
China Telecommunication
Standards telephone |
English PDF |
QB/T 4030-2010 |
telephone cable paper 电话纸 |
China Light Industry
Standards telephone |
English PDF |
YD/T 1889-2009 |
The Requirements of Hearing Aids Compatibility and Measurement Methods for telephone Handset 手柄电话助听器耦合技术要求和测量方法 |
China Telecommunication
Standards telephone |
English PDF |
TB/T 1500.6-2009 |
Operation of receiving and departing trains. Part 6: On single and double lines with telephone block and without interlocking 接发列车作业 第6部分 单双线电话闭塞无联锁 |
China Railway & Train
Standards telephone |
English PDF |
JT/T 703-2007 |
Technical requirements of high class highway emergency telephone 高速公路紧急电话系统 |
China Highway & Transportation
Standards telephone |
English PDF |
SN/T 1429.7-2007 |
Rules for the inspection of information technology equipment for import and export. Part 7: Cord telephone 进出口信息技术设备检验规程 第7部分:有线电话机 |
China Import Export Inspection
Standards telephone |
English PDF |
YD/T 1662-2007 |
Testing Methods for National No.7 Signalling System. GSM Mobile telephone User Part (MTUP) 国内no.7信令方式测试方法--gsm移动电话用户部分(mtup) |
China Telecommunication
Standards telephone |
English PDF |
TB/T 2354-2007 |
Passenger train crew telephone 旅客列车乘务电话 |
China Railway & Train
Standards telephone |
English PDF |
YD/T 868-2007 |
Technical Requirements and Measuring Methods for Additional Equipments of telephone Set 电话机附加设备技术要求及测试方法 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 1626-2007 |
Technical Requirement and Test Methods for Fixed Wireless telephone 固定无线电话机技术要求和测试方法 |
China Telecommunication
Standards telephone |
English PDF |
JT/T 680.15-2007 |
Technical requirement for the installation, operation, maintenance and repair of marine navigation equipment. Part 15: Survival craft two-way VHF radio telephone apparatus 船用通信导航设备的安装、使用、维护、修理技术要求 第15部分:救生艇(筏)双向甚高频便携式无线电话 |
China Highway & Transportation
Standards telephone |
English PDF |
YD/T 789-2006 |
Technical Requirements and Measuring Methods of Hands-Free telephone Sets 免提电话机技术要求和测试方法 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 589-2006 |
Basic Requirement of Transmission Impairment Tolerance for Group 3 Document Facsimile on the telephone Network 电话网上文件传真三类机承受传输损伤能力的基本要求 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 1517-2006 |
Testing Method for Intelligent Terminal Equipment based on IP:IP telephone Terminal ip智能终端设备测试方法--ip电话终端 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 1516-2006 |
Technical Requirements for Interlligent Terminal Equipment based on IP:IP telephone Terminal ip智能终端设备技术要求--ip电话终端 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 992-2006 |
Technical Requirements and Testing methods of telephone Additional functions 电话机附加功能的基本技术要求及检验方法 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 5053-2005 |
Specifications of Engineering Design for telephone Network Management System 电话网网管系统工程设计规范(附条文说明) |
China Telecommunication
Standards telephone |
English PDF |
YD/T 1361-2005 |
Technical requirements and testing methods for telephone dialer 电话拨号器技术要求和测试方法 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 1349-2005 |
Technical Requirements and Testing Methods for 2.4GHzDigital Cordless telephone Sets 2.4ghz数字无绳电话机技术要求和测试方法 |
China Telecommunication
Standards telephone |
English PDF |
TB/T 2355-2005 |
The specification and test methods of communication column for railway track-side telephone 铁路区间电话通话柱技术要求和试验方法 |
China Railway & Train
Standards telephone |
English PDF |
TB/T 2029-2005 |
The specification and test methods for manual telephone system for railway 铁路人工话务系统设备技术要求和试验方法 |
China Railway & Train
Standards telephone |
English PDF |
JT/T 621-2005 |
GSM/CDMA emergency telephone system for highway 公路gsm/cdma数字紧急电话系统 |
China Highway & Transportation
Standards telephone |
English PDF |
SJ 20913-2004 |
Network management protocol and interface requirements for the military digital secure automatic telephone network 军用数字保密自动电话网网络管理协议和接口要求 |
China Electronics
Standards telephone |
English PDF |
YD/T 1304-2004 |
Test specification for national No.7 signaling system. Message Transfer Part (MTP) and telephone User Part (TUP) 国内no.7信令方式测试方法——消息传递部分(mtp)和电话用户部分(tup) |
China Telecommunication
Standards telephone |
English PDF |
YD/T 1308-2004 |
The technical requirements of intelligent public telephone system 智能公用电话系统技术要求 |
China Telecommunication
Standards telephone |
English PDF |
JJG 983-2003 |
Verification Regulation of Verifying Instrument for Single and Dispersion Controlled Centrally telephone Accounter 单机型和集中管理分散型电话计费器检定仪检定规程 |
China Metrological
Standards telephone |
English PDF |
YD/T 1285-2003 |
The test method for quality of communication for inter-public telecom network. Call complete ratio and post-dialing delay for telephone call 公用电信网间通信质量测试方法——电话呼叫的接通率和拨号后时延 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 1284-2003 |
The technical requirement for quality of communia-cation for inter. public telecom network-call completion rate post dialing delay for telephone call 公用电信网间通信质量技术要求——电话呼叫的接通率和拨号后时延 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 1278-2003 |
The technical demand and testing method for the charging performance of SPC. telephone network part 在用局用交换设备计费技术要求和检测方法——固定电话网部分 |
China Telecommunication
Standards telephone |
English PDF |
JJG 977-2003 |
Verification Regulation of Timing and Charging Device for IC Card Public telephone ic卡公用电话计时计费装置检定规程 |
China Metrological
Standards telephone |
English PDF |
SJ 20859-2002 |
Network management protocol and interface requirements for the military digital secure automatic telephone network 军用毫米波微波管陶瓷金属化膜层规范 |
China Electronics
Standards telephone |
English PDF |
JJG 869-2002 |
Verification Regulation of Electro-acoustical Measurement Instruments for telephone Set 电话电声测试仪检定规程 |
China Metrological
Standards telephone |
English PDF |
YD/T 1227-2002 |
The technical specification of multimedia IC card public telephone system 多媒体ic卡公用电话系统技术规范 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 1189-2002 |
The Technical specification of mobile IC card public telephone system 移动ic卡公用电话系统技术要求 |
China Telecommunication
Standards telephone |
English PDF |
TB/T 3026.4-2002 |
The digital conference telephone handset distributor technical requirements and test methods 数字会议电话 话筒分配器技术要求和试验方法 |
China Railway & Train
Standards telephone |
English PDF |
SJ 20798-2001 |
General specification for the key management center in the military digital secure automatic telephone network 军用激光器及相关支持设备的安全设计要求 |
China Electronics
Standards telephone |
English PDF |
YD/T 1150-2001 |
The technical specification for intelligent public telephone service 智能公用电话业务技术规范 |
China Telecommunication
Standards telephone |
English PDF |
TB 10036-2000 |
Code for design of railway SPC digital telephone switching engineering 铁路时分数字程控电话交换工程设计规范(附条文说明) |
China Railway & Train
Standards telephone |
English PDF |
YD/T 1056-2000 |
Requirement for establishment of network of special services for different kinds of local telephone networks 各类本地电话网特服业务台组网要求 |
China Telecommunication
Standards telephone |
English PDF |
TB/T 2997.3-2000 |
Railway programmed telephone equipment collinear tandem technical requirements and test methods 铁路程控共线电话设备 汇接机技术要求及试验方法 |
China Railway & Train
Standards telephone |
English PDF |
TB/T 2997.2-2000 |
Railway programmed collinear the telephone equipment collinear phone technical requirements and test methods 铁路程控共线电话设备 共线话机技术要求及试验方法 |
China Railway & Train
Standards telephone |
English PDF |
TB/T 2997.1-2000 |
Railway programmed collinear telephone equipment master the technical requirements and test methods 铁路程控共线电话设备 主控机技术要求及试验方法 |
China Railway & Train
Standards telephone |
English PDF |
TB/T 2996-2000 |
Technical requirements and test method for digital concentrated telephone units 数字式电话集中机技术要求及试验方法 |
China Railway & Train
Standards telephone |
English PDF |
SJ 20737-1999 |
General specification for command telephone system on shipboard 舰船指挥电话系统通用规范 |
China Electronics
Standards telephone |
English PDF |
YDN 115.3-1999 |
Test specification for China intelligent network services (Vote of telephone service) (internal standard) 中国智能网业务测试规范(电话投票业务) |
China Telecommunication
Standards telephone |
English PDF |
YD/T 1006-1999 |
A simultaneous voice plus data modem, operating at a voice plus data signalling rates of 4 800bits/s, with optional automatic switching to data-only signalling rates of up to 14 400bit/s, for use on the general switched telephone network and on leased poi 在公用电话交换网上和点对点二线租用电话型电路上同时传送语音和数据的调制解调器 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 1004-1999 |
Technical specifications and test methods of multi-port telephone accounting system 多路电话计费系统技术要求及测试方法 |
China Telecommunication
Standards telephone |
English PDF |
JJG(YD)049-1999 |
telephone network simulator |
China Metrological
Standards telephone |
English PDF |
YD/T 514-1998 |
Technical requirements and test methods for interface between non-voice subscriber terminal and public telephone network 非话用户终端设备与公用电话网接口技术要求和测试方法 |
China Telecommunication
Standards telephone |
English PDF |
TB/T 2925-1998 |
(Long-distance railway manual telephone exchange equipment technical conditions cordless) 铁路长途人工电话无绳式交换设备技术条件 |
China Railway & Train
Standards telephone |
English PDF |
YDN 088-1998 |
(Automatically Switched telephone (digital) network technology system (internal standard)) 自动交换电话(数字)网技术体制 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 945-1998 |
Modem operating at data signalling rates of up to 33600 bit/s for use on the general switched telephone network and on leased point-to-point 2-wire telephone-type circuits 公用电话交换网和点对点二线专线电路上使用的数据信号速率高达33600bit/s的调制解调器 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 579-1997 |
The specifications for coin box telephone set 投币电话机技术条件 |
China Telecommunication
Standards telephone |
English PDF |
SJ 20628-1997 |
General specification for military recording telephones 通用型军用计算机信息安全技术要求 |
China Electronics
Standards telephone |
English PDF |
SJ 20648-1997 |
Terminology for military digital secure automatic telephone network 军用数字保密自动电话网术语 |
China Electronics
Standards telephone |
English PDF |
YDN 030.2-1997 |
Code number and dialing procedure of universal personal telecommunication, wide area Centrex switch (WAC), vote of telephone (VOT) and mass calling (MAS) services (internal standard) 通用个人通信(upt)、广域集中用户交换机(wac)、电话投票(vot)和大众呼叫(mas)的编号和拨号程序 |
China Telecommunication
Standards telephone |
English PDF |
YDN 030.1-1997 |
Implications and process of universal personal telecommunication, wide area Centrex switch (WAC), vote of telephone (VOT) and mass calling (MAS) services (internal standard) 通用个人通信(upt)、广域集中用户交换机(wac)、电话投票(vot)和大众呼叫(mas)的业务含义和流程 |
China Telecommunication
Standards telephone |
English PDF |
SJ 20653-1997 |
Key distribution center (KDC) interface of the military digital secure automatic telephone network 军用数字保密自动电话网密钥分配中心接口 |
China Electronics
Standards telephone |
English PDF |
SJ 20652-1997 |
Technical requirements for verbal explanation of the military digital secure automatic telephone network 军用数字保密自动电话网语音编解技术要求 |
China Electronics
Standards telephone |
English PDF |
SJ 20651-1997 |
Cryptographic protocol for the military digital secure automatic telephone network 军用数字保密自动电话网加密协议 |
China Electronics
Standards telephone |
English PDF |
SJ 20650-1997 |
Interoffice common channel signaling in the military digital secure automatic telephone network 军用数字保密自动电话网局间共路信令 |
China Electronics
Standards telephone |
English PDF |
SJ 20649-1997 |
Subscriber loop signaling in the military digital secure automatic telephone network 军用数字保密自动电话网用户环路信令 |
China Electronics
Standards telephone |
English PDF |
YD/T 588-1996 |
Basic requirement for ability of telephone online audio modem to withstand transmission impairments 电话网上音频调制解调器承受传输损伤能力的基本要求 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 840-1996 |
telephone subscriber indoor copper-conductor wires 电话网用户铜芯室内线 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 772-1995 |
Technical requirement and test method for networking of group telephone equipment 集团电话进网技术要求和检测方法 |
China Telecommunication
Standards telephone |
English PDF |
SJ/T 10664-1995 |
Technical requirements and measuring methods for electromagnetic compatibility of telephone terminal 电话终端的电磁兼容性技术要求及测量方法 |
China Electronics
Standards telephone |
English PDF |
SJ/T 10651-1995 |
Methods of test for toll manual telephone switching equipment 长途人工电话交换设备测试方法 |
China Electronics
Standards telephone |
English PDF |
TB/T 1691-1995 |
(Switched telephone Network Rail DC signal between the way) 铁路电话交换网所间直流信号方式 |
China Railway & Train
Standards telephone |
English PDF |
TB/T 1693-1995 |
(Railway signal interface switched telephone network of automatic telephone exchange) 铁路电话交换网 自动电话交换机的信号接口 |
China Railway & Train
Standards telephone |
English PDF |
YD/T 751-1995 |
Test method for networking of digital office telephone exchange equipment in public telephone network 公用电话网局用数字电话交换设备进网检测方法 |
China Telecommunication
Standards telephone |
English PDF |
YD 5010-1995 |
(Urban residential area architectural design and installation of telephone communications Atlas) 城市居住区建筑电话通信设计安装图集 |
China Telecommunication
Standards telephone |
English PDF |
JJG(YD)032-1995 |
(Dual-tone multi-frequency telephone tester test procedures) |
China Metrological
Standards telephone |
English PDF |
TB/T 2500-1994 |
(Wayside telephone equipment (wired) standard series and the main technical conditions) 铁路区间电话设备(有线)制式 系列及主要技术条件 |
China Railway & Train
Standards telephone |
English PDF |
TB/T 1723-1994 |
(Switched telephone Network Rail and ringing tones) 铁路电话交换网铃流及信号音 |
China Railway & Train
Standards telephone |
English PDF |
SJ/T 10561-1994 |
Type designation system for carrier telephone communication equipment 载波电话通信设备型号命名方法 |
China Electronics
Standards telephone |
English PDF |
SJ/T 10560-1994 |
Type designation system for private telephone equipment 专用电话设备型号命名方法 |
China Electronics
Standards telephone |
English PDF |
SJ/T 10559-1994 |
Type designation system for telephone switchboards 电话交换机型号命名方法 |
China Electronics
Standards telephone |
English PDF |
SJ/T 10558-1994 |
Type designation system for telephone sets 电话机型号命名方法 |
China Electronics
Standards telephone |
English PDF |
YD/T 722-1994 |
polyolefin insulated, PVC sheathed, parallel-twin copper-clad steel wires for telephone subscribers communication 聚烯烃绝缘聚氯乙烯护套平行双芯铜包钢电话用户通信线 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 696-1993 |
Requirement for networking of cordless telephone sets 无绳电话机进网要求 |
China Telecommunication
Standards telephone |
English PDF |
JJG(YD)021-1994 |
Specification for verification of testers of telephone dial |
China Metrological
Standards telephone |
English PDF |
JJG(YD)019-1994 |
Specification for verification of telephone channel tester |
China Metrological
Standards telephone |
English PDF |
TB 10216-1994 |
Code for construction of railway SPC digital telephone switching engineering |
China Railway & Train
Standards telephone |
English PDF |
YD/T 638.14-1993 |
Type designation system for telephone sets 电话机型号命名方法 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 638.13-1993 |
Type designation for accessory equipments of telephone exchange 电话交换附属设备型号命名方法 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 638.5-1993 |
Type designation system for telephone switchboards 电话交换机型号命名方法 |
China Telecommunication
Standards telephone |
English PDF |
TB/T 1692-1993 |
(Switched telephone Network Rail multifrequency register signaling mode) 铁路电话交换网 多频记发器信号方式 |
China Railway & Train
Standards telephone |
English PDF |
TB/T 1690-1993 |
(Railway switched telephone network digital line signaling) 铁路电话交换网 数字型线路信号方式 |
China Railway & Train
Standards telephone |
English PDF |
TB/T 1689-1993 |
(Railway switched telephone network with a single-frequency pulse line signaling) 铁路电话交换网 带内单频脉冲线路信号方式 |
China Railway & Train
Standards telephone |
English PDF |
TB/T 1688-1993 |
(Railway signaling switched telephone network users) 铁路电话交换网 用户信号方式 |
China Railway & Train
Standards telephone |
English PDF |
TB/T 2317-1992 |
(Setup and routing railway between phones switched telephone network circuits) 铁路电话交换网电话所间电路的设置和路由选择 |
China Railway & Train
Standards telephone |
English PDF |
SJ/T 10126-1991 |
Specification for carrier telephone terminal equipement with 12 channels open-wire cables for Type 12ZD-16 12zd-16型明线电缆12路载波电话终端机技术条件 |
China Electronics
Standards telephone |
English PDF |
SJ/T 10122-1991 |
Wireless portable telephone for JXD-37 jxd-37型袖珍式无线电话机 |
China Electronics
Standards telephone |
English PDF |
XF 14-1991 |
Technical requirements and test methods for radiotelephones for fire protection {译} 消防用无线电话机技术要求和试验方法 |
China Fire industry
Standards telephone |
English PDF |
TB 2179.5-1991 |
(Railway telephone network data communication interface. Electrical characteristics for balanced double circuit is generally in the field of data communications equipment used in conjunction with an integrated circuit) |
China Railway & Train
Standards telephone |
English PDF |
TB 2179.4-1991 |
(Railway telephone network data communication interface. In the field of data communications usually Electrical characteristics for unbalanced double interface integrated circuit devices used in conjunction with) |
China Railway & Train
Standards telephone |
English PDF |
TB 2179.3-1991 |
(Railway telephone network data communication interface. Electrical characteristics for unbalanced double interface circuit) |
China Railway & Train
Standards telephone |
English PDF |
TB 2179.2-1991 |
(Railway telephone network data communication interface data terminal equipment and data circuit terminating equipment interface circuit between the definition table) |
China Railway & Train
Standards telephone |
English PDF |
YD 344-1990 |
Requirements for PABXs access to public telephone switching network 自动用户交换机进网要求 |
China Telecommunication
Standards telephone |
English PDF |
TB 2130.6-1990 |
(Train dispatching telephone. Extension technical requirements and test methods) |
China Railway & Train
Standards telephone |
English PDF |
TB 2130.2-1990 |
(Train dispatching telephone switchboard. Test methods) |
China Railway & Train
Standards telephone |
English PDF |
YD/T 577-1992 |
Jack and Plug For Indoor telephone 室内电话机插头座 |
China Telecommunication
Standards telephone |
English PDF |
TB/T 2088-1989 |
(Railway switched telephone network transmission attenuation) |
China Railway & Train
Standards telephone |
English PDF |
TB 1426-1983 |
(Railway station wired telephone equipment standard series) |
China Railway & Train
Standards telephone |
English PDF |
YD/T 548-1992 |
The specification and test methods for conference telephone SET 会议电话分机技术要求及测试方法 |
China Telecommunication
Standards telephone |
English PDF |
YD/T 547-1992 |
The specification and test methods for conference telephone tandem board 会议电话汇接机技术要求及测试方法 |
China Telecommunication
Standards telephone |
English PDF |
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