| 摘要 |
PURPOSE:To realize a link to cope with a high traffic volume by giving class marks to voice and non-voice circuits respectively and by reserving a link for a non- voice circuit, in advance. CONSTITUTION:Class marks to discriminate a voice circuit EXT and a non- voice circuit DT are registered for a data memory DM through a central processing unit CPU from an input/output device I/O. For instance, a class mark A and a class mark B are registered in the circuits EXT and DT, respectively. Thus, if calling is carried out from the circuit DT, the CPU discriminates the class mark B registered in the memory DM, and selects a link group LK.B reserved in advance for the class mark B through a calling switch circuit SW, thereby a terminal of a called non-voice circuit is connected. |
