| 摘要 |
A multi-subscriber paging and simultaneous call system and a method thereof are provided to smoothly proceed with a multi-group call between a treatment board and a local feeding part by performing filtering or compensation processing after automatically extracting howling in the multi-group call. A multi-subscriber paging and simultaneous call system comprises a feeding telephone call control part(200), an automatic line switching unit(300), a treatment board(100) and a local feeding part(500). The feeding telephone call control part, which comprises a plurality of feeding telephone lines, records the phone numbers of both ends connected through one of the feeding telephone lines, and checks a multi-group call state between the two ends in real time. The automatic line switching unit monitors whether the feeding telephone call control part works abnormally, and executes automatic switching for the feeding telephone lines connected to the feeding telephone call control part. The treatment board, one of the two ends, transmits a previously created group call request signal to the feeding telephone call control part through a wired/wireless communication line connected with the feeding telephone call control part. The local feeding part is the other one of the two ends. The local feeding part carries out a multi-group call with the treatment board through a multi-group call circuit network connected to the feeding telephone lines by delivering a previously created group call response signal to the feeding telephone call control part in response to the group call request signal so that the feeding telephone call control part can allow the multi-group call. |
