按键电话机检测

ITU-T Q.23 FRENCH-1988 按键电话机的技术特性

The introduction of push-buttons on telephone sets may have an effect on the operation of international circuits: owing to the greater dialling speed

TECHNICAL FEATURES OF PUSH-BUTTON TELEPHONE SETS

ITU-T Q.23 SPANISH-1988 按键电话机的技术特性

The introduction of push-buttons on telephone sets may have an effect on the operation of international circuits: owing to the greater dialling speed

TECHNICAL FEATURES OF PUSH-BUTTON TELEPHONE SETS

GB/T 9032-1988 脉冲式按键电话机技术要求

本标准适用于普通型脉冲式按键电话机（以下简称话机

Performance requirements of pushbutton telephone with pulse

GB/T 12195-1990 脉冲式按键电话机测试方法

本标准规定了与GB9032《脉冲式按键电话机技术要求》相对应的测试方法。 本标准适用于普通型脉冲式按键电话机（以下简称话机

Methods of measurement for pushbutton telephone with pulse

GB/T 9034-1988 双音多频式按键电话机技术要求

本标准对双音多频式按键电话机规定了一般要求。 本标准适用于普通型双音多频式按键电活机（以下简称话机

Performance requirements of pushbutton telephone with DTMF

GB/T 12197-1990 双音多频式按键电话机测试方法

本标准规定了与GB9034《双音多频式按键电话机技术要求》相对应的测试方法。 本标准适用于普通型双音多频式按键电话机（以下简称话机

Methods of measurement for pushbutton telephone with DTMF

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

ETSI ETR 345-1997 人性因素(HF).电话手机按键和键盘特性,老年人和残疾人的要求

Human Factors (HF); Characteristics of Telephone Keypads and Keyboards; Requirements of Elderly and Disabled People

CNS 14577-2001 按键式电话系统

本标准适用于内线相互问及中继线与内线间．经由接续装置执行交换之设备，并可与公众网络交换设备相接的用户自备专用按键电话交换机系统，简称按键式电话系统。（二条局线以上免总机系统按键电话机亦适用之

Key telephone system

GOST 14300-1979 电话按钮键.规范

Telephone push-button switches. Specifications

ITU-T Q.23-1989 按键话机的技术特性

To reduce the risk of signal imitation by speech currents, the frequencies for an in-band signalling system should be chosen from the frequencies i.n

Technical Features of Push-Button Telephone Sets - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 2 pp

ITU-T Q.23-1988 按键话机的技术特性

There can be no doubt that,owing to the high dialling speed which can be obtained with push-button sets,their use is bound to spread widely

TECHNICAL FEATURES OF PUSH-BUTTON TELEPHONE SETS

GB/T 9033-1988 电话用脉冲式按键号盘技术要求

本标准对电话用脉冲式按键号盘规定了一般要求。 本标准适用于自动电话机用的脉冲式按键号盘（以下简称号盘

Performance requirements of pushbutton dialer with pulse

GB/T 12196-1990 电话用脉冲式按键号盘测试方法

本标准规定了与GB9033《电话用脉冲式按键号盘技术要求》相对应的测试方法。 本标准适用于电话用脉冲式按键号盘（以下简称号盘

Methods of measurement for pushbutton dialer with pulse

JCS 9076-2011 室内用阻燃聚乙烯护套按键电话线

Flame retardant polyethylene sheathed button telephone cables for indoor use

ITU-T Q.23 FRENCH-1988 按键电话机的技术特性

The introduction of push-buttons on telephone sets may have an effect on the operation of international circuits: owing to the greater dialling speed

TECHNICAL FEATURES OF PUSH-BUTTON TELEPHONE SETS

ITU-T Q.23 SPANISH-1988 按键电话机的技术特性

The introduction of push-buttons on telephone sets may have an effect on the operation of international circuits: owing to the greater dialling speed

TECHNICAL FEATURES OF PUSH-BUTTON TELEPHONE SETS

GB/T 9032-1988 脉冲式按键电话机技术要求

本标准适用于普通型脉冲式按键电话机（以下简称话机

Performance requirements of pushbutton telephone with pulse

GB/T 12195-1990 脉冲式按键电话机测试方法

本标准规定了与GB9032《脉冲式按键电话机技术要求》相对应的测试方法。 本标准适用于普通型脉冲式按键电话机（以下简称话机

Methods of measurement for pushbutton telephone with pulse

GB/T 9034-1988 双音多频式按键电话机技术要求

本标准对双音多频式按键电话机规定了一般要求。 本标准适用于普通型双音多频式按键电活机（以下简称话机

Performance requirements of pushbutton telephone with DTMF

GB/T 12197-1990 双音多频式按键电话机测试方法

本标准规定了与GB9034《双音多频式按键电话机技术要求》相对应的测试方法。 本标准适用于普通型双音多频式按键电话机（以下简称话机

Methods of measurement for pushbutton telephone with DTMF

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

ETSI ETR 345-1997 人性因素(HF).电话手机按键和键盘特性,老年人和残疾人的要求

Human Factors (HF); Characteristics of Telephone Keypads and Keyboards; Requirements of Elderly and Disabled People

CNS 14577-2001 按键式电话系统

本标准适用于内线相互问及中继线与内线间．经由接续装置执行交换之设备，并可与公众网络交换设备相接的用户自备专用按键电话交换机系统，简称按键式电话系统。（二条局线以上免总机系统按键电话机亦适用之

Key telephone system

GOST 14300-1979 电话按钮键.规范

Telephone push-button switches. Specifications

ITU-T Q.23-1989 按键话机的技术特性

To reduce the risk of signal imitation by speech currents, the frequencies for an in-band signalling system should be chosen from the frequencies i.n

Technical Features of Push-Button Telephone Sets - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 2 pp

ITU-T Q.23-1988 按键话机的技术特性

There can be no doubt that,owing to the high dialling speed which can be obtained with push-button sets,their use is bound to spread widely

TECHNICAL FEATURES OF PUSH-BUTTON TELEPHONE SETS

GB/T 9033-1988 电话用脉冲式按键号盘技术要求

本标准对电话用脉冲式按键号盘规定了一般要求。 本标准适用于自动电话机用的脉冲式按键号盘（以下简称号盘

Performance requirements of pushbutton dialer with pulse

GB/T 12196-1990 电话用脉冲式按键号盘测试方法

本标准规定了与GB9033《电话用脉冲式按键号盘技术要求》相对应的测试方法。 本标准适用于电话用脉冲式按键号盘（以下简称号盘

Methods of measurement for pushbutton dialer with pulse

JCS 9076-2011 室内用阻燃聚乙烯护套按键电话线

Flame retardant polyethylene sheathed button telephone cables for indoor use