In telegraphy , one of the two significant conditions of encoding. ( 188 ) Note 1: The complementary significant condition is called a " mark ." Note 2: In modern digital communications , the two corresponding significant conditions of encoding are called "zero" and "one." Synonyms spacing pulse , spacing signal .
SPACE
Meaning of SPACE in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012