扩音电话、选号电话检测

NAVY MIL-A-16749 E (2)-1968 音频声动力电话系统扩音扩音器

This amendment forms a paorft Military Specification MIL-A-16749E SHIPS), 15 May 1963

AMPLIFIER, AUDIO FREQUENCY, SOUND POWERED TELEPHONE SYSTEM

NAVY MIL-A-16749 E-1963 音频声动力电话系统扩音扩音器

This specification covers a type AM 2210( )/WTC amplifier used to amplify audio frequency signals sufficiently to drive a group of sound powered

AMPLIFIER, AUDIO FREQUENCY, SOUND POWERED TELEPHONE SYSTEM

ANSI/TIA-4953-2012 电信.电话终端设备.扩音电话测量规程和性能要求

This standard establishes telephone audio performance requirements, measurement methods, and test procedures for telephones with high receive gain

Telecommunications - Telephone Terminal Equipment - Amplified Telephone Measurement Procedures and Performance Requirements

GF 018-1995 公用电话网自动电话编号

Numbering for automatic telephone in public phone network

ITU-T E.182-1998 电话业务录音通知和信号音的应用E系列 -电话网络和ISDN 电话服务 服务操作和人力因素 操作 编号

This Recommendation gives the responses that telephone networks should provide to subscribers in theoperation of both basic and supplementary

Application of Tones and Recorded Announcements in Telephone Services - Series E: Overall Network Operation Telephone Service Service Operation and Human Factors - Operation Numbering Routing and Mobile Services - International Operation - Tones in Nation

TB/T 1723-1994 铁路电话交换网铃流及信号音

ANSI/TIA-912-B-2007 电信.IP电话设备.话音网关传输要求

This standard covers the transmission requirements for VGs. For the purposes of this standard, a 2 VG is considered to be a device that performs voice

Telecommunications - IP Telephony Equipment - Voice Gateway Transmission Requirements

STAS 11200/90-1978 图形符号．电话的图形符号．电话适配器

Graphical symbols GRAPHICAL SYMBOL FOR TELEPHONE; TELEPHONE ADAPTER

GB/T 3380-1982 电话自动交换网铃流和信号音

Ringing and tone for telephone automatic switching network

GB 3380-1982 电话自动交换网铃流和信号音

本标准规定我国电话自动交换网长、市交换设备的铃流和信号音标准，统一信号音发送地点。本标准适用于纵横制（或准电子式）交换设备以及标准中所注明的其它制式设备

Ringing and tone for telephone automatic switching network

TIA TSB-116-A-2006 IP电话的电信IP电话设备语音质量建议

The objectives of this TSB are to provide end-to-end voice quality guidelines for North American IP Telephony and to an E-Model tutorial for IP

Telecommunications - IP Telephony Equipment ?Voice Quality Recommendations for IP Telephony Contains Color

ITU-T SERIES P SUPP 16-1988 电话会议房间[1]和会议电话机(GATs)内的麦克风和扩音器的安装指南

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

Guidelines for Placement of Microphones and Loudspeakers in Telephone Conference Rooms [1] and for Group Audio Terminals (GATs) - Series P: Telephone Transmission Quality Telephone Installations Local Line Networks Supplement 16

ANSI/SCTE 24-23-2012 有线电话中IP电话用BV32语音多媒体数字信号编解码器规范

This document contains the description of the BV32 speech codec. BV32 compresses 16 kHz sampled wideband speech to a bit rate of 32 kb/s (kilobits per

BV32 Speech Codec Specification for Voice over IP Applications in Cable Telephony

TBn 1-1985 铁路电话交换网长途自动电话编号

VA FED H-08-4 VOL 4-E-S-11-1988 符号.电话系统

SYMBOLS - TELEPHONE SYSTEM

NAVY MIL-A-16749 E (2)-1968 音频声动力电话系统扩音扩音器

This amendment forms a paorft Military Specification MIL-A-16749E SHIPS), 15 May 1963

AMPLIFIER, AUDIO FREQUENCY, SOUND POWERED TELEPHONE SYSTEM

NAVY MIL-A-16749 E-1963 音频声动力电话系统扩音扩音器

This specification covers a type AM 2210( )/WTC amplifier used to amplify audio frequency signals sufficiently to drive a group of sound powered

AMPLIFIER, AUDIO FREQUENCY, SOUND POWERED TELEPHONE SYSTEM

ANSI/TIA-4953-2012 电信.电话终端设备.扩音电话测量规程和性能要求

This standard establishes telephone audio performance requirements, measurement methods, and test procedures for telephones with high receive gain

Telecommunications - Telephone Terminal Equipment - Amplified Telephone Measurement Procedures and Performance Requirements

GF 018-1995 公用电话网自动电话编号

Numbering for automatic telephone in public phone network

ITU-T E.182-1998 电话业务录音通知和信号音的应用E系列 -电话网络和ISDN 电话服务 服务操作和人力因素 操作 编号

This Recommendation gives the responses that telephone networks should provide to subscribers in theoperation of both basic and supplementary

Application of Tones and Recorded Announcements in Telephone Services - Series E: Overall Network Operation Telephone Service Service Operation and Human Factors - Operation Numbering Routing and Mobile Services - International Operation - Tones in Nation

TB/T 1723-1994 铁路电话交换网铃流及信号音

ANSI/TIA-912-B-2007 电信.IP电话设备.话音网关传输要求

This standard covers the transmission requirements for VGs. For the purposes of this standard, a 2 VG is considered to be a device that performs voice

Telecommunications - IP Telephony Equipment - Voice Gateway Transmission Requirements

STAS 11200/90-1978 图形符号．电话的图形符号．电话适配器

Graphical symbols GRAPHICAL SYMBOL FOR TELEPHONE; TELEPHONE ADAPTER

GB/T 3380-1982 电话自动交换网铃流和信号音

Ringing and tone for telephone automatic switching network

GB 3380-1982 电话自动交换网铃流和信号音

本标准规定我国电话自动交换网长、市交换设备的铃流和信号音标准，统一信号音发送地点。本标准适用于纵横制（或准电子式）交换设备以及标准中所注明的其它制式设备

Ringing and tone for telephone automatic switching network

TIA TSB-116-A-2006 IP电话的电信IP电话设备语音质量建议

The objectives of this TSB are to provide end-to-end voice quality guidelines for North American IP Telephony and to an E-Model tutorial for IP

Telecommunications - IP Telephony Equipment ?Voice Quality Recommendations for IP Telephony Contains Color

ITU-T SERIES P SUPP 16-1988 电话会议房间[1]和会议电话机(GATs)内的麦克风和扩音器的安装指南

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

Guidelines for Placement of Microphones and Loudspeakers in Telephone Conference Rooms [1] and for Group Audio Terminals (GATs) - Series P: Telephone Transmission Quality Telephone Installations Local Line Networks Supplement 16

ANSI/SCTE 24-23-2012 有线电话中IP电话用BV32语音多媒体数字信号编解码器规范

This document contains the description of the BV32 speech codec. BV32 compresses 16 kHz sampled wideband speech to a bit rate of 32 kb/s (kilobits per

BV32 Speech Codec Specification for Voice over IP Applications in Cable Telephony

TBn 1-1985 铁路电话交换网长途自动电话编号

VA FED H-08-4 VOL 4-E-S-11-1988 符号.电话系统

SYMBOLS - TELEPHONE SYSTEM