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GB/T 11820-1989 The requirements for urban optical fiber cable systems joined to national public telecommunication network (USD) via email in 1-3 business day
GB/T 13714-1992 Fiber optic branching devices-Part 3:Sectional specification-One-to-n wavelength multiplexer/demultiplexer via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 14275-1993 Fiber optic modulators-Part 2: Sectional specification-Waveguide electrooptic modul (USD) via email in 1-3 business day VALID
GB/T 15118-1994 Technical requirement for digital line systems on optical fibre cables at 4×139264kbit/s via email in 1-3 business day please email coc@codeofchina.com for quotation
GB/T 14138-1993 Requirements for aerial optical fiber cable systems joined to national public telecommunication network via email in 1-3 business day please email coc@codeofchina.com for quotation
GB/T 13997-1999 Technical requirement for 2 048 kbit/s, 8 448 kbit/s, 34 368 kbit/s, 139 264 kbit/s Optical line terminals via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 13713-1992 Fibre optic branching devices Part 1:Generic specification via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 14760-1993 The measurement methods of transmission performances on optical fiber cable communication systems via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 13712-1992 Fibre optic modulators Part 1:Generic specification via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
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