M40 电话通信设备 标准查询与下载

YD/T 1255-2003 具有路由功能的以太网交换机技术要求

Technical Specification for Ethernet Switch with Routing Capability

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

ITU-T E.138 NOTE FRENCH-2003 提高老年人适用性的公用电话的人为因素研究组2

In the last paragraph, add a comma after the word "terminal".

Human factors aspects of public telephones to improve their usability for older people

ITU-T E.138 NOTE SPANISH-2003 提高老年人适用性的公用电话的人为因素研究组2

In the last paragraph, add a comma after the word "terminal".

Human factors aspects of public telephones to improve their usability for older people

ITU-T E.138 NOTE-2003 提高老年人适用性的公用电话的人为因素研究组2

In the last paragraph, add a comma after the word "terminal".

Human factors aspects of public telephones to improve their usability for older people (Study Group 2)

ITU-R M.1036-2-2003 806-960 MHz, 1 710-2 025 MHz, 2 110-2 200 MHz 和2 500-2 690 MHz频段的IMT-2000陆地部分的实施与频谱考虑

International Mobile Telecommunications-2000 (IMT-2000) are third generation mobile systems which provide access to a wide range of telecommunications services, supported by the fixed telecommunications networks (e.g. PSTN/ISDN/IP), and to other services

Frequency arrangements for implementation of the terrestrial component of International Mobile Telecommunications-2000 (IMT-2000) in the bands 806-960 MHz, 1710-2025 MHz, 2110-2200 MHz and 2500-2690 MHz Question ITU-R 229/8

ITU-T P.380 SPANISH-2003 耳机的电声测试.12号研究组

This Recommendation is the result of a study held within ITU-T for defining the electro-acoustic testing methodologies for headsets, which provide the best correlation with the performance of headsets in real use, when using the couplers currently recommended in Recommendation P.57.

Electro-acoustic measurements on headsets

ITU-T P.862.1-2003 将P.862原结果转换成MOS-LQO的映射功能

ITU-T Rec. P.862 provides raw scores in the range –0.5 to 4.5. It is desired to provide a MOS-LQO (P.800.1) score from P.862 to allow a linear comparison with MOS. This Recommendation presents the mapping function and its performance for a single mapping

Mapping function for transforming P.862 raw result scores to MOS-LQO Study Group 12

ITU-T P.380 FRENCH-2003 耳机的电声测试.12号研究组

This Recommendation is the result of a study held within ITU-T for defining the electro-acoustic testing methodologies for headsets, which provide the best correlation with the performance of headsets in real use, when using the couplers currently recommended in Recommendation P.57.

Electro-acoustic measurements on headsets

ITU-T P.851 SPANISH-2003 基于会话系统的电话业务的主观质量评估.系列P:电话传输质量.电话设备.本地线路网络.评定质量的客观和主观方法.12号研究组

This Recommendation describes subjective evaluation methods providing information about the quality of telephone services based on spoken dialogue systems, as experienced by the users of such services. Spoken dialogue systems addressed by the Recommendation enable a spoken language interaction with a human user via the telephone network on a turn-by-turn basis, and have speech recognition, speech understanding, dialogue management, response generation, and speech output capabilities. They may provide access to information stored in a database, or allow different types of transactions to be performed.

Subjective quality evaluation of telephone services based on spoken dialogue systems SERIES P: TELEPHONE TRANSMISSION QUALITY TELEPHONE INSTALLATIONS LOCAL LINE NETWORKS Methods for objective and subjective assessment of quality Study Group 12

ITU-T P.851 FRENCH-2003 基于会话系统的电话业务的主观质量评估.系列P:电话传输质量.电话设备.本地线路网络.评定质量的客观和主观方法.12号研究组

This Recommendation describes subjective evaluation methods providing information about the quality of telephone services based on spoken dialogue systems, as experienced by the users of such services. Spoken dialogue systems addressed by the Recommendation enable a spoken language interaction with a human user via the telephone network on a turn-by-turn basis, and have speech recognition, speech understanding, dialogue management, response generation, and speech output capabilities. They may provide access to information stored in a database, or allow different types of transactions to be performed.

Subjective quality evaluation of telephone services based on spoken dialogue systems

SN/T 1163.1-2002 进出口有线电话机检验规程

本标准规定了進出口有线电话机的抽样检验和检验结果的判定。 本标准适用于进出口有线电话机的检验，本标准不适用于进出口子母机、带有录音和传真等特殊用 途的有线电话机的检验 。

Rules for inspection of imported and exported wired telephones

SN/T 1163.2-2002 进出口GSM蜂窝电话性能要求检验规程

Rules for the inspection of performance requirements for import and export GSM cellular phone

YD/T 1237-2002 PSTN可视电话进网技术要求及测试方法

The technical requirement and test method for PSTN videophone

YD/T 1236-2002 N-ISDN 会议电视进网技术要求及测试方法

The technical requirement and test method for video conference system based on N-ISDN

ITU-T E.129-2002 全国电话号码介绍 系列E:整个网络运营、电话服务、服务运营及人类因素运营,号码、路由及流动电讯服务-

The objective of this Recommendation is to specify a methodology that will provide a standardized method for presenting the domestic numbering plans of all countries (i.e. each country's application of ITU-T Rec. E.164).

Presentation of National Numbering Plans Series E: Overall Network Operation, Telephone Service, Service Operation and Human Factors International Operation - General Provisions Concering Users Study Group 2

YD/T 1227-2002 多媒体IC卡公用电话系统技术规范

本标准规定了多媒体 IC 卡公用电话系统的定义及其组成框架; 规定了系统中终端、管理中心、通信 协议及计费模式等技术要求和测试方法。本标准适用于终端通过 ISP 或专网接人管理中心、通信协议采用 TCP/P 方式、提供语音及信息服务并采用 IC 卡方式付费的公用电话系统。本标准可以作为产品设计、检 验和交验的技术依据。

The technical specification of multimedia IC card public telephone system

ITU-T P.834 SPANISH-2002 推导工具型模型的设备障碍因素的方法.系列P:电话传输质量.电话设备.本地线路网络.评定质量的客观和主观方法.12号研究组

Esta Recomendación describe la metodología para la obtención de factores de degradación de equipo (Ie) mediante modelos instrumentales. Los factores de degradación derivados por esta metodología se utilizan en el modelo E (véase la Rec. UIT-T G.107). Esta metodología debe considerarse complementaria de la basada en pruebas de escucha solamente descritas en la Rec. UIT-T P.833. Proporciona valores válidos de Iesólo para aquellos códecs para los que el modelo instrumental produce estimaciones válidas.

Methodology for the derivation of equipment impairment factors from instrumental models SERIES P: TELEPHONE TRANSMISSION QUALITY TELEPHONE INSTALLATIONS LOCAL LINE NETWORKS Methods for objective and subjective assessment of quality Study Group 12; COVERIN

ITU-T P.834 FRENCH-2002 推导工具型模型的设备损伤因素的方法.系列P:电话传输质量.电话设备.本地线路网络.评定质量的客观和主观方法.12号研究组

La présente Recommandation décrit la méthode permettant d'évaluer les facteurs de dégradation par l'équipement (Ie) au moyen de modèles instrumentaux. Les facteurs de dégradation par l'équipement obtenus par cette méthode sont destinés à être utilisés dans le modèle E (voir Rec. UIT-T G.107). Elle doit être considérée comme complémentaire à la méthode fondée sur les essais de dégradation auditive par écoute seulement qui est décrite dans la Rec. UIT-T P.833. Elle ne fournira de valeurs Ievalides que concernant les codecs pour lesquels le modèle instrumental utilisé produit des estimations significatives.

Methodology for the derivation of equipment impairment factors from instrumental models SERIES P: TELEPHONE TRANSMISSION QUALITY TELEPHONE INSTALLATIONS LOCAL LINE NETWORKS Methods for objective and subjective assessment of quality Study Group 12; COVERIN

ITU-T E.138-2002 提高老年人适用性的公用电话的人性话因素 E系列:整体网络操作 电话服务 服务操作和人性化因素的国际操作

This Recommendation contains guidelines for the design of public telephone terminals for voice communication to make them more usable for older people, whose sensory, cognitive and motor functions may have deteriorated.

Human factors aspects of public telephones to improve their usability for older people Series E: Overall Network Operation Telephone Service Service Operation and human Factors International operation - General provisions concerning users Study Group 2