现行

ITU-T Q.554

Transmission characteristics at digital interfaces of digital exchanges
数字交换机数字接口的传输特性

1996-11-11

现行

ITU-T G.142

Transmission characteristics of exchanges
交易所的传输特性

1998-12-03

现行

ITU-T Q.553

Transmission characteristics at 4-wire analogue interfaces of digital exchanges
数字交换机四线模拟接口的传输特性

2001-11-29

现行

ITU-T Q.552

Transmission characteristics at 2-wire analogue interfaces of digital exchanges
数字交换机双线模拟接口的传输特性

2001-11-29

现行

ITU-T Q.45bis

Transmission characteristics of an analogue international exchange
模拟国际交换的传输特性

1988-11-25

现行

ITU-T Q.45

Transmission characteristics of an analogue international exchange
模拟国际交换的传输特性

1984-10-19

现行

ETS 300 006

Business Telecommunications (BT); Transmission Characteristics at Digital Interfaces of a Digital Private Automatic Branch Exchange (PABX)
商业电信（BT）；数字专用自动交换机（PABX）数字接口的传输特性

1991-08-01

现行

ETS 300 003

Business Telecommunications (BT); Transmission characteristics of digital Private Automatic Branch Exchanges (PABXs)
商业电信（BT）；数字专用自动交换机（PABX）的传输特性

1991-08-01

现行

ITU-T P.313

Transmission characteristics for cordless and mobile digital terminals
无绳和移动数字终端的传输特性

2007-03-16

现行

ETS 300 005

Business Telecommunications (BT); Transmission Characteristics at 4-WIRE Analogue Interfaces of a Digital Private Automatic Branch Exchange (PABX)
商业电信（BT）；数字专用自动交换机（PABX）四线模拟接口的传输特性

1991-08-01

现行

ETS 300 004

Business Telecommunications (BT); Transmission Characteristics at 2-wire Analogue Interfaces of a Digital Private Automatic Branch Exchange (PABX)
商业电信（BT）；数字专用自动交换机（PABX）双线模拟接口的传输特性

1991-08-01

现行

ETSI ES 201 168

Speech processing, Transmission and Quality aspects (STQ); Transmission characteristics of digital Private Branch eXchanges (PBXs) for interconnection to private networks, to the public switched network or to IP gateways
语音处理、传输和质量方面（STQ）；用于与专用网络、公共交换网络或IP网关互连的数字专用分支交换机（PBX）的传输特性

2000-10-01

现行

IEC 62553-2012

Methods of measurement for digital network - Performance characteristics of terrestrial digital multimedia transmission network
数字网络测量方法 - 地面数字多媒体传输网络性能特征

2012-11-27

现行

BS EN 62553-2013

Methods of measurement for digital network. Performance characteristics of terrestrial digital multimedia transmission network
数字网络的测量方法 地面数字多媒体传输网络的性能特点

2013-02-28

现行

ITU-T P.311

Transmission characteristics for wideband (150-7000 Hz) digital handset telephones
宽带（150-7000 Hz）数字手持电话的传输特性

2005-06-06

现行

ITU-T P.310

Transmission characteristics for telephone band (300-3400 Hz) digital telephones
电话频带（300-3400 Hz）数字电话的传输特性

2003-03-16

现行

ITU-T G.181

Characteristics of 1 + 1 type restoration systems for use on digital transmission links
用于数字传输链路的1+1型恢复系统的特性

1993-03-12

现行

AS 4943.1-2021

Digital radio - Terrestrial broadcasting, Part 1: Characteristics of terrestrial digital audio broadcasting (T-DAB ) transmissions
数字无线电.地面广播 第1部分:地面数字音频广播（T-DAB）传输的特性

2021-01-22

现行

BS 08/30191251 DC

BS EN 62553. Methods of measurement for digital network. Performance characteristics of terrestrial digital multimedia transmission network
英国标准EN 62553 数字网络的测量方法 地面数字多媒体传输网络的性能特点

2008-10-09

现行

ITU-T P.341

Transmission characteristics for wideband (150-7000 Hz) digital hands-free telephony terminals
宽带（150-7000 Hz）数字免提电话终端的传输特性

2005-06-06