GB/T 13997-1999
ActiveTechnical requirement for 2048kbit/s，8448kbit/s，34368kbit/s，139264kbit/s optical line terminals
2048kbit/s、8448kbit/s、34368kbit/s、139264kbit/s光端机技术要求
Application Summary AI generated
This standard specifies the technical requirements for optical line terminals operating at the four primary digital hierarchy rates (2, 8, 34, and 140 Mbit/s). It is applied in the design, production, and testing of optical transmission equipment used in public telecommunications networks, specifically for short-haul and long-haul fiber optic trunk lines. The standard ensures interoperability and performance consistency for PDH (Plesiochronous Digital Hierarchy) optical terminals in China's telecom infrastructure.
Related Standards
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GB/T 18311.5-2003
Fibre optic interconnecting devices and passive components--Basic test and measurement procedures--Part 3-5:Examinations and measurements--Wavelength dependence of attenuation
GB/T 18311.4-2003
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GB/T 18311.34-2003
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GB/T 7424.1-2003
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GB/T 18311.1-2003
Fibre optic interconnecting devices and passive components--Basic test and measurement procedures--Part 3-1:Examinations and measurements--Visual examination
GB/T 18310.26-2003
Fibre optic interconnecting devices and passive components--Basic test and measurement procedures--Part 2-26:Tests--Salt mist
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.