M38 数字通信设备 标准查询与下载

YD/T 795-1996 基群复用设备（可提供 384kbit/s 数字口）技术要求和测试方法

本标准规定了基群复用设备(可提供384kbit/s数字口)的设备分类、技术要求和测试方法。 本标准适用于具有随路信令接口功能、数字数据接口功能及2048kbit/s对称电缆线路终端功能的基群复用没备。

Technical requirement and test method for basic group multiplexing equipment (provides 384kbit/s digital port)

YD/T 794-1996 704/2048kbit/s 数字复分设备技术要求和测试方法

本标准规定了704/2048kbit/s数字复分设备的技术要求和测试方法。 本标准适用于704/2048kbit/s数字复分设备。

Technical requirement and test method for digital multiplex equipment at 704/2048kbit/s

YD/T 793-1996 704kbit/s 10路脉码调制复用设备技术要求和测试方法

本标准规定了704kbit/s10路脉码调制复用设备的技术要求和测试方法。 本标准适用于704kbit/s10路脉码调制复用设备。

Technical requirement and test method for 10-channel pulse code modulation multiplex equipment at 704kbit/s

ITU-T G.766 FRENCH-1996 数字电路倍增设备的传真解调/再调制

Facsimile demodulation/remodulation for digital circuit multiplication equipment

YD/T 786-1995 64kbit/s 时分复用器接入数字网的技术要求

本标准规定了64kbit/s时分复用器接入数字网的技术要求。 本标准适用于时分复用器的集合口与各种数字网的64kbit/s数字电路之间的接口，这种数字电路通常采用点对点的固定连接方式。

Technical requirement for time-division multiplexer at 64kbit/s access to digital network

YD/T 748-1995 PDH 数字通道差错性能的维护限值

本标准规定了数字通道维护工作所需要的投人业务的差错性能限值，以便达到多种业务环境所给出的性能指标。 本标准适用于运行在PDH网上其传输速率从64kbit/，到139264kbit/s的各数字系列级的数字通道差错性能的维护限值。数字通道的差错性能限值只在通道的可用时间周期内评估。 注:1)不可用时周期开始于连续10s期间，当每秒均是SES时，此10s包括在不可用时间内。当连续l0s期间，每秒均不是SES时，不可用时间结束，此10s为可用时间。当通道的一个方向或两个方向处于不可用状态时，则通道处于不可用状态。总侧试时间减去不可用时间周期，即为可用时间周期。

Limit value for maintenance of PDH digital channel error performances

YD/T 743-1995 2048kbit/s 对称电缆再生中继设备技术条件

本标准规定了线路终端机和再生中继机的技术要求、测试方法、验收规则及包装、运输、贮藏。 本标准适用于传输比特率为2048k bit/s数字信号的数字线路系统，包括线路终端机和再生中继机，主要在0.5～0.9mm线径的各种市话对称电缆(或参数相当的其它对称电缆)上使用。

Technical conditions of symmetrical cable regenerative trunk equipment operating at 2048kbit/s

YD/T 742-1995 2048kbit/s 数字信令转换设备技术要求和测试方法

本标准规定了2048kbit/s数字信令转换设备的技术要求和测试方法。 本标准适用于DSC设备的生产、检验，也适用于产品的验收。

Technical requirement and test method for digital signaling conversion equipment at 2048kbit/s

ITU-T G.726 ANX A-1995 403224 16 kbit/s自适应差分脉码调制.附件A:统一使用G.726推荐扩展.量化的输入和输出. 数字传输系统的一般性质(研究组15)8页

This annex extends the Adaptive Differential Pulse Code Modulation (ADPCM) algorithm specified in Recommendation G.726 to allow use of a uniform PCM interface at input and output.

40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM) - Annex A: Extensions of Recommendation G.726 for Use with Uniform- Quantized Input and Output - General Aspects of Digital Transmission Systems (Study Group 15) 8 pp

ITU-T Q.953-1995 综合数字业务网-使用DSS 1数字标识补充业务的第3阶段描述:条款4:终端可携带性-NO.1数字用户信令系统

This Recommendation specifies the stage three of the Terminal Portability (TP) supplementary service for the Integrated Services Digitai Network (ISDN) at the T reference point or coincident S and T reference point (as defined in Recommendation 1.41 1 [i

Integrated Services Digital Network (ISDN) - Stage 3 Description for Call Completion Supplementary Services Using DSS 1 Clause 4 - Terminal Portability (TP) - Digital Subscriber Signalling System No. 1 (Study Group 11) 11 pp

ITU-T Q.954.2-1995 综合数字业务网: 条款2-三方业务-NO.1数字用户信令系统

Integrated Services Digital Network (ISDN) - Stage 3 Description for Multiparty Supplementary Services Using DSS 1 Clause 2 - Three Party (3PTY) - Digital Subscriber Signalling System No. 1 (Study Group 11) 39 pp

Integrated Services Digital Network (ISDN) - Stage 3 Description for Multiparty Supplementary Services Using DSS 1 Clause 2 - Three Party (3PTY) - Digital Subscriber Signalling System No. 1 (Study Group 11) 39 pp

ITU-T Q.956 CLAUSE 2-1995 综合数字业务网-使用DSS 1数字标识补充业务的第3阶段描述-条款2:计费通知-NO.1数字用户信令系统

This Recommendation specifies the stage three of the Advice of Charge (AOC) supplementary service for the Integrated Services Digital Network (ISDN) at the T reference point or coincident S and T reference point (as defined in Recommendation 1.41 1 [i]) b

Integrated Services Digital Network (ISDN) - Stage 3 Service Description for Charging Supplementary Services Using DSS 1 Clause 2 - Advice of Charge (AOC) - Digital Subscriber Signalling System No. 1 (Study Group 11) 51 pp

ITU-T G.726 ANX A SPANISH-1995 403224 16 kbit/s自适应差分脉码调制.附件A:统一使用G.726推荐扩展.量化的输入和输出. 数字传输系统的一般性质(研究组15)8页

This annex extends the Adaptive Differential Pulse Code Modulation (ADPCM) algorithm specified in Recommendation G.726 to allow use of a uniform PCM interface at input and output.

40, 32, 24, 16 kbit/s ADAPTIVE DIFFERENTIAL PULSE CODE MODULATION (ADPCM) ANNEX A: EXTENSIONS OF RECOMMENDATION G.726 FOR USE WITH UNIFORM-QUANTIZED INPUT AND OUTPUT

ITU-T G.726 APP III SPANISH-1995 自适应差分脉冲编码调制算法的比较.附件4到国际电信联盟电信标准化部推荐G.726. 数字传输系统的各个方面研究组15;44页

This appendix presents a unified introduction to all these algorithms. their main features and their performance.

COMPARISON OF ADPCM ALGORITHMS

ITU-T G.726 APP III-1995 自适应差分脉冲编码调制算法的比较.附件4到国际电信联盟电信标准化部推荐G.726. 数字传输系统的各个方面研究组15;44页

This appendix presents a unified introduction to all these algorithms. their main features and their performance.

Comparison of ADPCM Algorithms - Appendix III to ITU-T Recommendation G.726 - General Aspects of Digital Transmission Systems (Study Group 15; 44 pp)

ITU-T Q.956-1995 综合数字业务网-使用DSS 1数字标识补充业务的第3阶段描述-条款3:反向计费-NO.1数字用户信令系统

Integrated Services Digital Network (ISDN) - Stage 3 Description for Charging Supplementary Services Using DSS 1 - Clause 3 - Reverse Charging - Digital Subscriber Signalling System No. 1 (Study Group 11) 39 pp

Integrated Services Digital Network (ISDN) - Stage 3 Description for Charging Supplementary Services Using DSS 1 - Clause 3 - Reverse Charging - Digital Subscriber Signalling System No. 1 (Study Group 11) 39 pp

ITU-T Q.953.4-1995 使用No.1数字用户信令系统(DSS1)的呼叫完成补充业务第3阶段描述:终端可携带性(TP)

This Recommendation defines the operation of the Digital Subscriber Signalling System No.1 (DSS 1) for the support of the Terminal Portability (TP) supplementary service at the T or the coincident S and T reference point of the User-toNetwork Interface of the Integrated Services Digital Network (ISDN).The Terminal Portability supplementary service allows the user to temporarily suspend an active call,and subsequently reactivate it from the same terminal equipment or from another one within the same user-network interface.

INTEGRATED SERVICES DIGITAL NETWORK (ISDN) – STAGE 3 DESCRIPTION FOR CALL COMPLETION SUPPLEMENTARY SERVICES USING DSS 1 Clause 4 - Terminal Portability (TP)

ITU-T Q.956.2-1995 使用No.1数字用户信令系统(DSS1)的计费补充业务第3阶段描述:计费通知

This Recommendation defines the operation of the Digital Subscriber Signalling System No.1 (DSS 1) for the support of the Advice Of Charge (AOC) Supplementary service at the T or the coincident S and T reference point of the User-to-Networkinterface of the Integrated Services Digital Network (ISDN).The Advice Of Charge supplementary service allows the served user to request the network to provide charging information at call establishment time (AOC-S),during the call (AOC-D),or at the end of the call (AOC-E).Depending on the subscribed options,this charging information may be provided either for all calls or only for the calls for which an explicit request is made.

Integrated Services Digital Network (ISDN) - Stage 3 Service Description for Charging Supplementary Services Using DSS 1 Clause 2 - Advice of Charge (AOC) - Digital Subscriber Signalling System No. 1 (Study Group 11) 51 pp

ITU-T Q.956.2 SPANISH-1995 综合服务数字网络（ISDN） 使用 DSS 1 条款 2 对补充服务收费的第 3 阶段服务说明 收费通知（AOC）

This Recommendation defines the operation of the Digital Subscriber Signalling System No.1 (DSS 1) for the support of the Advice Of Charge (AOC) Supplementary service at the T or the coincident S and T reference point of the User-to-Networkinterface of the Integrated Services Digital Network (ISDN).The Advice Of Charge supplementary service allows the served user to request the network to provide charging information at call establishment time (AOC-S),during the call (AOC-D),or at the end of the call (AOC-E).Depending on the subscribed options,this charging information may be provided either for all calls or only for the calls for which an explicit request is made.

INTEGRATED SERVICES DIGITAL NETWORK (ISDN) – STAGE 3 SERVICE DESCRIPTION FOR CHARGING SUPPLEMENTARY SERVICES USING DSS 1 Clause 2 – Advice Of Charge (AOC)

YD/T 724-1994 同步传送模块STM-1、STM-4的帧结构和复用方法

本标准规定了同步数字系列(SDH)中第一级同步传送模块STM-1的复用结构和帧结构在该帧中的段开销和净荷的主要内容。本标准还规定厂第四级同步传送模块STM-4同STM-l之间的复用关系和STM-4的帧结构。 本标准适用于公用电信网。非2Mbit/s系列的租用通道不在本标准范围之内。

Frame structure and multiplexing method for synchronous transport module STM-1, STM-4