发布时间:2024-05-27 17:49:26 - 更新时间:2024年06月29日 15:22
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Transmission characteristics for telephones band (300-3400 Hz) digital telephones
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
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
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
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)
本标准规定了多媒体数字电话终端的要求,试验方法,检验规则,标志、包装、运输和贮存。 本标准适用于在一条模拟电话线上能够同时发送和接收图像、语音及其它数据信息的具有音、视频功能的多媒体数字电话终端
本标准规定了公用电话网局用数字电话交换设备的公共测试条件,测试仪表和设备要求,测试环境及抽样办法,各类技术指标和功能的检测方法,以及用户信号方式,局间信号方式和同步性能的检测方同时,规定了原始测试数据处理和评估原则。 本标准适用于数字程控电话终端局、汇接局、长市合一局、长市农合一局、长途局
Test method for networking of digital office telephone exchange equipment in public telephone network
This standard provides performance requirements for Customer Premises Equipment (CPE) incorporating a Telephone Answering Device (TAD) and intended
Telecommunications - Telephone Terminal Equipment - Digital Telephone Answering Device - Performance Requirements
Measures for the avoidance of possible interference generated by digital television studio equipment
IP-Based Digital Telephony for the Versatile Home Network
本标准规定了话音频带数字电话机传输性能进网要求及测试方法,适用于话音频带数字电话机传输性能指标的设计和测试,可作为产品传输性能质量检验和进一步制定产品标准的仁要依据
Technical requirement and test method for digital telephone transmission performances
Standard methods for measuring transmission performance of analog and digital telephone sets
Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets
Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets
The quality of customer line telephone transmission and transmission characteristics - set for telephone band (300-3400 Hz) digital telephones
Transmission characteristics for telephones band (300-3400 Hz) digital telephones
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
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
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
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)
本标准规定了多媒体数字电话终端的要求,试验方法,检验规则,标志、包装、运输和贮存。 本标准适用于在一条模拟电话线上能够同时发送和接收图像、语音及其它数据信息的具有音、视频功能的多媒体数字电话终端
本标准规定了公用电话网局用数字电话交换设备的公共测试条件,测试仪表和设备要求,测试环境及抽样办法,各类技术指标和功能的检测方法,以及用户信号方式,局间信号方式和同步性能的检测方同时,规定了原始测试数据处理和评估原则。 本标准适用于数字程控电话终端局、汇接局、长市合一局、长市农合一局、长途局
Test method for networking of digital office telephone exchange equipment in public telephone network
This standard provides performance requirements for Customer Premises Equipment (CPE) incorporating a Telephone Answering Device (TAD) and intended
Telecommunications - Telephone Terminal Equipment - Digital Telephone Answering Device - Performance Requirements
Measures for the avoidance of possible interference generated by digital television studio equipment
IP-Based Digital Telephony for the Versatile Home Network
本标准规定了话音频带数字电话机传输性能进网要求及测试方法,适用于话音频带数字电话机传输性能指标的设计和测试,可作为产品传输性能质量检验和进一步制定产品标准的仁要依据
Technical requirement and test method for digital telephone transmission performances
Standard methods for measuring transmission performance of analog and digital telephone sets
Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets
Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets
The quality of customer line telephone transmission and transmission characteristics - set for telephone band (300-3400 Hz) digital telephones