FIELD: optical communication.
SUBSTANCE: technical result is achieved by the fact that, first, a data frame is created, wherein the data frame overhead area includes a target bit, target bit simultaneously indicates at least two multiframes, multiframe includes a plurality of consecutive data frames, different multiframes include a different number of data frames, different overhead information is inserted into different multiframes, and the data frame is an optical transport network (OTN) data frame; and then sending the data frame.
EFFECT: efficient increase of bandwidth resource use for multi-frame indication.
30 cl, 10 dwg
