Method for selecting a broadcast voice channel served in a telephone switching network, and a system thereof

DETAILED DESCRIPTION Therefore, an object of the present invention is to release the subscriber's task of hooking on and one by one dialing to select the broadcast voice in succession.
Another object of the present invention is to reduce the telephone rate charged to the subscriber when the subscriber selects the broadcast voice by listening to several broadcast voices.
Yet another object of the present invention is to raise the operating efficiency of a switch in a telephone network when the telephone network services the broadcast voices.
The above objects are accomplished by providing a new selecting system of the broadcast voice to the telephone network having the broadcast voice service, so as to be used by the subscribers.
In accordance with the new selecting system, the selection of the broadcast voice required to be sent to the subscriber is performed in the following steps.
(the first step) The subscriber makes a call to receive the broadcast voice service in the telephone network, by dialing a designated number (a first number) of a switch, which is provided in the telephone network, operationally connected to a channel selector provided for selecting a broadcast voice required, by the subscriber, to listen to.
(the second step) When the first number is dialed by the subscriber, the first number designates a trunk in the switch.
Then, the trunk triggers the channel selector, so that the channel selector sends an inquiring voice to the subscriber for inquiring of the subscriber the broadcast voice to be selected by the subscriber, sending an inquiring tone to the subscriber.
After the subscriber receives the inquiring tone, the subscriber sends an channel selecting signal to the channel selector by operating push button for example.
(the third step) Receiving the channel selecting signal through the trunk, the channel selector selects the broadcast voice the subscriber requires to listen to and sends the selected broadcast voice to the subscriber.
(the fourth step) When the subscriber changes to listen to another broadcast voice while the subscriber listens to the present broadcast voice, the subscriber hooks once and sends another channel selecting signal to the channel selector through the trunk, holding the connection between the subscriber and the trunk as it is, as is done in the second step