| 摘要 |
A call connection system assigns at least one specific one of a plurality of slots, in advance, as an emergency call slot for processing an emergency call and assigns remaining slots, in advance, as general call slots for processing general calls that need not be preferentially handled. This system includes a call connection processing section, announcement transfer section, and slot releasing section. If there is an idle general call slot, the call connection processing section performs call connection processing by using the idle slot in response to a general call connection request. If there is no idle general call slot and there is an idle emergency call slot, the announcement transfer section assigns one of the emergency call slots to an originating terminal, in response to a general call connection request, to transfer a first announcement informing that the general call cannot be connected because of line congestion to the originating terminal. The slot releasing section releases the emergency call slot assigned to the originating terminal after at least transfer of the first announcement is completed by the announcement transfer section. A call connection method is also disclosed.
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