数字式电话集中机检测

TB/T 2996-2000 数字式电话集中机技术要求及试验方法

本标准规定了铁路数字式电话集中机的技术要求和试验方法。 本标准适用于铁路车站数字式电话集中机的生产、检验及维护

Technical requirements and test method for digital concentrated telephone units

DIN ETS 300640:1997 人机工程.标准电话机键盘数字与字母排列方式

The document defines the assignment of alphabetic letters to digits on telephone keypad arrays

Human Factors (HF) - Assignment of alphabetic letters to digits on standard telephone keypad arrays; English version ETS 300640:1996

ITU-T E.543 FRENCH-1993 数字国际电话交换机中的业务等级

The grade of service (GOS) parameters and values to be used as dimensioning standards and as performance objectives for international telephone

GRADES OF SERVICE IN DIGITAL INTERNATIONAL TELEPHONE EXCHANGES

ITU-T E.543 SPANISH-1993 数字国际电话交换机中的业务等级

The grade of service (GOS) parameters and values to be used as dimensioning standards and as performance objectives for international telephone

GRADES OF SERVICE IN DIGITAL INTERNATIONAL TELEPHONE EXCHANGES

ITU-T P.310-2003 话带(300~3400Hz)数字电话机的传输特性

This Recommendation deals with sending and receiving loudness ratings, sidetone masking rating, listener sidetone rating, sending and receiving

Transmission characteristics for telephone band (300-3400 Hz) digital telephones SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Subscribers' lines and sets Study Group 12

ITU-T P.310-2009 话带(300Hz～3400Hz)数字电话机的传输特性

Recommendation ITU-T P.310 provides audio performance requirements and associated testing methods for narrow-band (300-3400 Hz) digital handset

Transmission characteristics for narrow-band digital handset and headset telephones (Study Group 12)

GB 3971.2-1983 电话自动交换网局间中继数字型线路信号方式

数字型线路信号方式是在电话交换网局间中继采用PCM系统时的线路信号方式。本标准规定我国电话网中纵横制市话局（包括准电子局），程控市话局和自动长话局之间数字型线路信号编码，接口中继方式以及信号设备的相关技术指标

Interoffice junction digital line signalling system for telephone automatic switching network

ETSI I-ETS 300 400-1995 综合业务数字网(ISDN).电话终端.投币式公用电话

Integrated Services Digital Network (ISDN); Telephony Terminals; Payphones

CNS 14412-2000 整体服务数字网络第II型数字电话机

本标准规定整体服务数字网络（Integrated Services Digital Network，简称 ISDN）第 Ⅱ 型数字电话机，所使用的通信协议、构造、功能需求…等项目，使之能经由连接电信总局规范之 ISDN 网络基本速率 S/T接口（Basic Rate S/T Interface

ISDN digital phone type II

CNS 14411-2000 整体服务数字网络第I型数字电话机

本标准规定整体服务数字网络（Integrated Services Digital Network，简称 ISDN）第 I 型数字电话机所使用的通信协议、构造、功能需求…等项目，使之能经由连接电信总局规范之 ISDN 网络基本速率 S/T接口（Basic Rate S/T Interface），接取

ISDN digital phone type I

GJB 699.4A-1997 电话自动交换网信号方式 局间中继数字型线路信号方式

Automatic telephone switching network signaling method Inter-office relay digital line signaling method

GJB 699.4-1989 电话自动交换网信号方式 局间中继数字型线路信号方式

Automatic telephone switching network signaling method Inter-office relay digital line signaling method

ITU-T E.543-1993 数字国际电话交换中的服务等级

The grade of service (GOS) parameters and values to be used as dimensioning standards and as performance objectives for international telephone

GRADES OF SERVICE IN DIGITAL INTERNATIONAL TELEPHONE EXCHANGES

NF Z89-640*NF ETS 300640:2000 人类工效学 对标准电话机按键上的数字按字母方式排列

Human Factors (HF) - Assignment of alphabetic letters to digits on standard telephone keypad arrays

NF ETS 300085:1992 电信通信 数字服务集成(RNIS)3.1kHz 电话服务 组合电话终端的紧急情况

Télécommunications - Réseau numérique à intégration de services (RNIS) - Téléservice téléphonique à 3,1 kHz - Exigences pour le raccordement de terminaux téléphoniques à combiné.

TB/T 2996-2000 数字式电话集中机技术要求及试验方法

本标准规定了铁路数字式电话集中机的技术要求和试验方法。 本标准适用于铁路车站数字式电话集中机的生产、检验及维护

Technical requirements and test method for digital concentrated telephone units

DIN ETS 300640:1997 人机工程.标准电话机键盘数字与字母排列方式

The document defines the assignment of alphabetic letters to digits on telephone keypad arrays

Human Factors (HF) - Assignment of alphabetic letters to digits on standard telephone keypad arrays; English version ETS 300640:1996

ITU-T E.543 FRENCH-1993 数字国际电话交换机中的业务等级

The grade of service (GOS) parameters and values to be used as dimensioning standards and as performance objectives for international telephone

GRADES OF SERVICE IN DIGITAL INTERNATIONAL TELEPHONE EXCHANGES

ITU-T E.543 SPANISH-1993 数字国际电话交换机中的业务等级

The grade of service (GOS) parameters and values to be used as dimensioning standards and as performance objectives for international telephone

GRADES OF SERVICE IN DIGITAL INTERNATIONAL TELEPHONE EXCHANGES

ITU-T P.310-2003 话带(300~3400Hz)数字电话机的传输特性

This Recommendation deals with sending and receiving loudness ratings, sidetone masking rating, listener sidetone rating, sending and receiving

Transmission characteristics for telephone band (300-3400 Hz) digital telephones SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Subscribers' lines and sets Study Group 12

ITU-T P.310-2009 话带(300Hz～3400Hz)数字电话机的传输特性

Recommendation ITU-T P.310 provides audio performance requirements and associated testing methods for narrow-band (300-3400 Hz) digital handset

Transmission characteristics for narrow-band digital handset and headset telephones (Study Group 12)

GB 3971.2-1983 电话自动交换网局间中继数字型线路信号方式

数字型线路信号方式是在电话交换网局间中继采用PCM系统时的线路信号方式。本标准规定我国电话网中纵横制市话局（包括准电子局），程控市话局和自动长话局之间数字型线路信号编码，接口中继方式以及信号设备的相关技术指标

Interoffice junction digital line signalling system for telephone automatic switching network

ETSI I-ETS 300 400-1995 综合业务数字网(ISDN).电话终端.投币式公用电话

Integrated Services Digital Network (ISDN); Telephony Terminals; Payphones

CNS 14412-2000 整体服务数字网络第II型数字电话机

本标准规定整体服务数字网络（Integrated Services Digital Network，简称 ISDN）第 Ⅱ 型数字电话机，所使用的通信协议、构造、功能需求…等项目，使之能经由连接电信总局规范之 ISDN 网络基本速率 S/T接口（Basic Rate S/T Interface

ISDN digital phone type II

CNS 14411-2000 整体服务数字网络第I型数字电话机

本标准规定整体服务数字网络（Integrated Services Digital Network，简称 ISDN）第 I 型数字电话机所使用的通信协议、构造、功能需求…等项目，使之能经由连接电信总局规范之 ISDN 网络基本速率 S/T接口（Basic Rate S/T Interface），接取

ISDN digital phone type I

GJB 699.4A-1997 电话自动交换网信号方式 局间中继数字型线路信号方式

Automatic telephone switching network signaling method Inter-office relay digital line signaling method

GJB 699.4-1989 电话自动交换网信号方式 局间中继数字型线路信号方式

Automatic telephone switching network signaling method Inter-office relay digital line signaling method

ITU-T E.543-1993 数字国际电话交换中的服务等级

The grade of service (GOS) parameters and values to be used as dimensioning standards and as performance objectives for international telephone

GRADES OF SERVICE IN DIGITAL INTERNATIONAL TELEPHONE EXCHANGES

NF Z89-640*NF ETS 300640:2000 人类工效学 对标准电话机按键上的数字按字母方式排列

Human Factors (HF) - Assignment of alphabetic letters to digits on standard telephone keypad arrays

NF ETS 300085:1992 电信通信 数字服务集成(RNIS)3.1kHz 电话服务 组合电话终端的紧急情况

Télécommunications - Réseau numérique à intégration de services (RNIS) - Téléservice téléphonique à 3,1 kHz - Exigences pour le raccordement de terminaux téléphoniques à combiné.