| 摘要 |
PURPOSE:To call one of extension telephones in an assemblage selecting in previously registered order by giving assemblage of extension telephones group number different from extension number of these extension telephones, and dialing the group number. CONSTITUTION:When a caller A does not desire connection to a specified extension telephone B and termination at one of extension telephones 2000-2006 will do, the dials group number ''30''. An originating register 2 receives, counts and accumulates the selection signal, and informs to a central control equipment (CC) 4. The CC4 discriminates that the dialed selection signal is group number, and selects a non-service telephone, for instance 2002, from telephone numbers 2000-2006 stored in a memory (MEM) 5 and sets a channel. Order of searching for non-service telephone is stored beforehand in the memory in the order of direction of searching, for instance, direction (a) and direction (b). |
