M34 微波通信设备 标准查询与下载

ITU-T G.992.3 AMD 3-2010 非对称数字用户线收发器 2（ADSL2）修正案 3：下行发射机参考虚拟噪声的比例因子和更正（第 15 研究组）

Amendment 3 to Recommendation ITU-T G.992.3 covers the following functionalities:? Channel initialization policies (corrigendum).? Upstream optional D0 values (corrigendum).? Scale factor for downstream transmitter referred virtual noise (new functionality).? Loop diagnostics procedures (editorial)

Asymmetric digital subscriber line transceivers 2 (ADSL2) Amendment 3: Scale factor for downstream transmitter referred virtual noise, and corrigenda (Study Group 15)

ITU-T G.992.3 NOTE-2007 不对称数字用户线(ADSL)的收发信机 更正1

In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may cont

Asymmetric digital subscriber line transceivers 2 (ADSL2)

GJB 5934-2007 军用微波接力通信设备测试接口

本标准规定了军用微波接力通信设备（以下简称微波接力设备）与检测设备之间的接口要求。 本标准适用于军用微波接力通信设备和检测设备的论证、研制、生产和验收。

Measure and test interface for military microwave relay communication equipment

ITU-T G.722.2 CORR 2-2007 16kbit/s速率上的使用自适应多速率宽带(AMR-WB)的宽带语音编码

his prepublication is an unedited version of a recently approved Recommendation.

Wideband coding of speech at around 16 kbit/s using Adaptive Multi-Rate Wideband (AMR-WB) Corrigendum 2 Study Group 16

ITU-R SM.443-4-2007 监测站的宽带测量

This Recommendation recommends methods for determining occupied bandwidth at monitoring stations for different classes of emission.

Bandwidth Measurement at Monitoring Stations

GJB 5799-2006 超短波多波道测向接收机通用规范

本规范规定了超短波多波道测向接收机（以下简称接收机或设备）的技术要求、质量保证规定和交货准备等方面的共性要求。 本规范适用于接收常规通信信号的超短波窄带多波道测向接收机。

General specification for ultrashort wave multi-channel DF receiver

GJB 5797-2006 短波指测通信收发信终端设备规范

Specification of short wave communication terminal for DF command data

GJB 5798-2006 超短波无线电侦测系统通用规范

General specification for ultrashort wave radio reconnaissance and DF system

GJB 5644-2006 短波数字化抗干扰系列电台接口要求

本标准规定了20W短波数字化抗干扰电台（以下简称20W电台）、125W短波数字化抗干扰电台（以下简称125W电台）、400W短波数字化抗干扰通信系统（以下简称400W通信系统）和1000W短波数字化抗干扰通信系统（以下简称1000W通信系统）电气接口及机械接口等要求。 本标准适用于于20W电台、125W电台、400W通信系统和1000W通信系统的研制和生产。其它军用短波电台也可参照执行。

Interface requirement of short wave digital anti-jam radio series

ITU-T G.992.3 AMD 2-2006 不对称数字用户线(ADSL)的收发信机 更正1

This amendment to ITU-T Rec. G.992.3 updates the electrical characteristics of ADSL2 transceivers and also corrects some inaccuracies and inconsistencies.

Asymmetric digital subscriber line (ADSL) transceivers ?2 (ADSL2) Amendment 2 Study Group 15

SJ 20938-2005 微波电路变频器测试方法

本规范规定了微波电路上变频器、下变频器电参数的测试方法。

Microwave circuits.Measuring methods for frequency converters

ITU-T G.994.1 AMD 4-2006 数字用户线(DSL)收发器的同步交换过程

This Amendment 4 to ITU-T Rec. G.994.1 was developed to support

Handshake procedures for digital subscriber line (DSL) transceivers Amendment 4 Study Group 15

ITU-T G.992.3 AMD 3-2006 (预发行)修正3:不对称数字用户线(ADSL)的收发信机 更正1

(Pre-Published) Amendment 3: Asymmetric digital subscriber line transceivers 2 (ADSL2)

Asymmetric digital subscriber line transceivers 2 (ADSL2) Amendment 3 Study Group 15

ITU-T G.992.5 AMD 3-2006 (预发行)修正3: 不对称数字用户线(ADSL)的收发信机 更正1

In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency.

Asymmetric Digital Subscriber Line (ADSL) transceivers ?Extended bandwidth ADSL2 (ADSL2plus) Amendment 3 Study Group 15

ITU-T G.722.2 CORR 1-2005 16kbit/s速率上的使用自适应多速率宽带(AMR-WB)的宽带语音编码

The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications.

Wideband coding of speech at around 16 kbit/s using Adaptive Multi-Rate Wideband (AMR-WB) Corrigendum 1 - Digital terminal equipments Coding of analogue signals by methods other than PCM

ITU-T G.992.3 AMD 1-2005 不对称数字用户线(ADSL)的收发信机 更正1

In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency.

Asymmetric digital subscriber line transceivers 2 (ADSL2) Study Group 15

ITU-T G.991.2 AMD 3-2005 单线对高速数字用户线(SHDSL)收发信机-修正1

The following text reflects the agreed modification for a third amendment to ITU-T Rec. G.991.2 (2003). Amendment 3 contains an update to ITU-T Rec. G.991.2 defining a new TPS-TC for PTM Transport based on 64/65-octet packet encapsulation. The text modi

Single-pair high-speed digital subscriber line (SHDSL) transceivers Amendment 3 - Digital sections and digital line system Access networks Study Group 15

ITU-T G.722.1-2005 用于低帧丢失率系统免提操作的24和32kbit/s简单编码

This Recommendation describes a low complexity encoder and decoder that may be used for 7-kHz bandwidth audio signals working at 24 kbit/s or 32 kbit/s. Further, this algorithm is recommended for use in hands-free applications such as conferencing where

Low-complexity coding at 24 and 32 kbit/s for hands-free operation in systems with low frame loss Study Group 16

ITU-T G.991.2 NOTE-2005 单线对高速数字用户线(SHDSL)收发信机-修正1

Subject: Erratum 1 (11/2005) to ITU-T Recommendation G.991.2 (2003) Amend.2 (02/2005),

Single-pair High-Speed Digital Subscriber Line (SHDSL) transceivers Amendment 2

ITU-T G.9954-2005 电话线网络收发信机-增强的物理、媒质接入和链路层规范

This Recommendation specifies the interoperability and compatibility for G.9954 stations. The requirements are written from the perspective of a compliant transmitter, although some minimum performance requirements are established for receivers. This Re

Phoneline networking transceivers ?Enhanced physical, media access, and link layer specifications Study Group 15