| 摘要 |
Terminal ports, line ports, and various process boards can be freely connected to a TDM bus and an ATM bus through a TDM bus slot and an ATM bus slot. Therefore, a terminal port for terminating a time-division multiplexing, a terminal port for terminating an asynchronous transfer mode, a terminal port for terminating both, etc. can be freely combined in the same unit. Additionally, the communications system can be easily modified using the same unit by changing a package device of the line port. Furthermore, the functions realized by the unit can be flexibly extended by changing the package device of various process board.
|
