Transmitter, receiver, communication system, communication method, and communication program

摘要: Provided is a communication system including transmitter and receiver which carry out by establishing connection of their plurality layers, the comprising: request generating means for containing command data required connecting number contiguously adjacent layers among layers; transmitting to receiver, receiving extracting from request, based on data. In this way, time taken establish reduced. Therefore, even when cut off during exchange, can be established again without taking much time, allowing quick recovery exchange.