distributing frame
1.The tristate driver circuit that interfaces with the main distributing frame and the transmit/receive filters. The drivers and filters are part of the port grouping.
2.A distributing frame carrying on one side(horizontal) all outside lines, and on the other side(vertical) the terminations of the central office equipment and protective devices for them.
3.This two kinds of precept guarantee the quality of software product effectually, by which the abuse of manual Unit Test is improved and the lifecycle of software development is shortened, while a frame model system of the automatedUnit Test of a distributing application based on CORBA is actualized at the second half of this discourse in order to testify the feasibility and necessary of automation of Software Test.
