Index of /pdf/datapro/communications_standards
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   DIR /pdf/datapro
       2715_FDDI.pdf
       2719_ISDN.pdf
       2720_CCITT_X_Series.pdf
       2722_CCITT_X.400.pdf
       2740_EIA_RS-232-C.pdf
       2741_EIA_RS-232-E.pdf
       2744_EIA-RS-499.pdf
       2747_EIA-530-A.pdf
       2750_GOSIP.pdf
       2760_IBM_BSC.pdf
       2765_IBM_SDLC.pdf
       2770_LAN_Standards.pdf
       2775_Internet_Suite.pdf
       2780_ISO_HDLC.pdf
       2783_ISO_OSI.pdf
       2784_OSI_Transport_and_Session_Layer_Protocols.pdf
       2785_OSI_Upper_Layer_Protocols.pdf
       2790_ITU-TSS_X.25.pdf