| 摘要 |
The invention relates to a system for digital communication of data divided into packets between at least two communication apparatuses via a network, said network comprising at least two media, wherein communication in the network is controlled by a network protocol and communication between the apparatuses is controlled by an apparatus protocol. Unabbreviated and complete transfer through the network of data and apparatus protocol information supplemented with network protocol information results in unnecessarily bulky packets, since at least some of the functions of the apparatus protocol are likewise executed by the network protocol, wherein the cost of the transfer through the network is directly proportional to the number of packets for transfer and the size of these packets. The invention has for its object to obviate the above stated drawbacks and provides to this end a system which is distinguished in that between the network and at least one of the apparatuses is placed a gate device which is adapted to code or decode the apparatus protocol information contained in a packet together with the data for transfer and to add network protocol information to the packet or remove it therefrom, and the system is further distinguished in that the gate device is adapted to transmit to an apparatus a confirmation to acknowledge receipt of a packet transmitted by this apparatus and to transfer the packet to the network for further transmission to the destination apparatus. |
