| 摘要 |
<p>PURPOSE:To attain point-to-point packet communication being transparent between users by setting an address added at the transmission of packet communication to a caller data terminal equipment and to a line terminator in the case of receiving a call. CONSTITUTION:A required data is read from a memory 6 under the control of a CPU 2, an address is generated from an address generating circuit 8 and fed to a signal format processing circuit 12. The circuit 12 sets an address of a frame of a link access protocol balanced (LAP-B) to the data terminal equipment 1 at the transmission of the packet communication started at the reception of the call. Moreover, the address of the frame of the LAP-B is set to the position of the line terminator at the transmission of the packet communication started at the reception of the call. Thus, the address of the caller is set as the equipment 1 and the address of the called party receiving a call request is set as the line terminator. Thus, transparent point-to-point packet communication is attained between two data terminal equipments.</p> |
