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Database: 365,228(8 Aug 2026)
telephone network second modem bit/s modem automatic telephone modem short waist battery management basic life requirements add replacement time calculation rules low background beta meter
GB/T 7625-1987 in English

GB/T 7625-1987 in English

VALID

2400/1200 bits per second modem standardized for use in the general switched telephone network

  • Issued on:1987-04-03
  • Implemented on:1987-11-01
  • File Format:PDF
  • Delivery:Via email within 1~3 business days
Price(USD): $70.00
$68.00
Standard No: GB/T 7625-1987
Document status: VALID
Title in English: 2400/1200 bits per second modem standardized for use in the general switched telephone network
Title in Chinese: 在电话自动交换网上使用的标准化2400/1200比特/秒调制解调器
Language: English
File Format: Electronic (PDF)
Delivery: Via email within 1~3 business days
Issued on: 1987-04-03
Implemented on: 1987-11-01
Professional Classification: GB-National Standard
Related Keywords: telephone network
second modem
bit/s modem
automatic telephone
modem
Related Topics: modulation ratio
standardized 600/1200 bd modem used in the public switched telephone network
switching network
femtosecond up-conversion technology
femtosecond upconversion
GBT7625

《GB/T 7625-1987在电话自动交换网上使用的标准化 2400/1200比特/秒调制解调器》由339-2(工业和信息化部(通信))归口,主管部门为工业和信息化部(通信)。
本标准等效采用国际电报电话咨询委员会CCITT建议V.25bis(1984)《在电话自动交换网上使用的标准化2400/1200比特秒调制解调器》。


Scope

Standardized 2400/1200 bit/s modem for use on automatic telephone switching networks

Sample only — not a preview of GB/T 7625-1987
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