NF Z81-118-1993 Attachments to the public switched telephone network (PSTN) Category II attachment for 1200 bits per second half duplex and 1200 75 bits per second asymmetrical dupcand.pdf

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NF Z81-118-1993 Attachments to the public switched telephone network (PSTN) Category II attachment for 1200 bits per second half duplex and 1200 75 bits per second asymmetrical dupcand.pdf,NFZ811181993ATTACHMENTSTOTHEPUBLICSWITCHEDTELEPHONENETWORKPSTNCATEGORYIIATTACHMENTFOR1200BITSPERSECONDHALFDUPLEXAND120075BITSPERSECONDASYMMETRICALDUPCANDPDF