GOST 28838-1990 Data transmission system signal conversion equipment for unswitched voice frequency channels, using compression information coding techniques. Basic parameters
This standard applies to stand-alone signal conversion devices (SCDs) that provide serial transmission
GOST 28838-1990 Referenced Document
GOST 18145-1981 Circuits at the interface C2 of the data transmission equipment with the terminals in the consequent data input-output. Nomenclature and technical requirements
GOST 23675-1979 Interface circuits C2 of data transmission system. Electric parameters
GOST 25007-1981 Data transmission interface with communication channel transmission frequency separation system. Basic parameters at the interface
GOST 26532-1985 Data transmission system signal conversion modulus for unswitched voice-frequency channels. Types and basic parameters
GOST 26557-1985 Data transmission signals entering in the communication channels. Energetic parameters
GOST 28838-1990 history
1990GOST 28838-1990 Data transmission system signal conversion equipment for unswitched voice frequency channels, using compression information coding techniques. Basic parameters