JPH0556160A - Call waiting system - Google Patents

Abstract

PURPOSE:To permit a subscriber waiting for a call to hear information which he himself selects so as to effectively use waiting time by permitting a telephone exchange to transmit information corresponding to a pressing key dial signal to the subscriber in the middle of waiting. CONSTITUTION:When SUB 2 and SUB 1 are connected by a channel switch (SW) 4 while SUB 1 and SUB 3 are in the mist of a call, SUB 3 hears a waiting tone through SW 4 and a waiting trunk 6. When SUB 3 transmits the pressing key dial signal (PB signal) which is previously decided in such a state, the PB signal is received in a pressing key dial signal receiver 8 through SW 4 and it is transferred to CPU 5. The CPU connection-changes the path of SW 4 to a path (e), connects SUB 3 to an information trunk (IFT) 7, controls IFT 7 and connects it to the service device WF 10 of weather forecast information corresponding to the PB signal, for example.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a call waiting system, and more particularly to a call waiting system for providing various information providing services to subscribers during call waiting.

[0002]

2. Description of the Related Art In the conventional call waiting system,
The telephone exchange sends a waiting tone to the subscriber in call waiting until the call of the subscriber in the call ends.

[0003]

In the conventional call waiting system, the subscriber who is waiting for a call waits while listening to the waiting tone until the call ends, so that there is a problem that nothing can be done during that time. ..

[0004]

According to the call waiting system of the present invention, when a subscriber who is waiting in call waiting among the subscribers who are talking is sending a predetermined push button dial signal, the telephone exchange pushes the push button. Information corresponding to the button dial signal is transmitted to the waiting subscriber.

When the telephone exchange receives the pushbutton dial signal, the telephone switchboard switches the waiting subscriber from the waiting tone trunk to the information trunk, and then responds to the pushbutton dial signal via the information trunk. It is characterized in that it is connected to an information source device, and the information source device is any of information service devices including weather forecasts, news, exchange rates, and horoscopes.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the call waiting system of the present invention.

The telephone exchange of this embodiment is a subscriber (hereinafter referred to as SU
B) Speech path switch (hereinafter SW) that accommodates 1, 2, 3
4, a central processing unit (hereinafter, CPU) 5 for performing sequence control in the telephone exchange, a waiting tone trunk (hereinafter, CWT) 6, an information trunk (hereinafter, IFT) 7, a push button dial signal receiver ( PBR) 8, a weighting tone generator (hereinafter TNG) 9 connected to the CWT 6, and an IFT.
Weather forecast service device (hereinafter WF) connected to 7
0, a news service device (hereinafter, NW) 11, an exchange rate information service device (hereinafter, RT) 12, and a horoscope information service device (hereinafter, HR) 13.

Next, the operation of this embodiment will be described.
If SUB2 calls SUB1 during a call between SUB1 and SUB3 via SW4 (path a shown by a dotted line), SUB2 and SUB1 switch SW4 (path b shown by a solid line) by hooking operation of SUB1 as is generally known. ) To connect and make a call. During this time, SUB3 hears the waiting tone from TNG9 via SW4 (path c shown by the chain line) and CWT6. In this state, when the SUB3 sends out a predetermined push button dial signal (hereinafter, PB signal), this PB signal is SW4 (path d shown by a broken line).
Is received by the PBR 8 via the and transferred to the CPU 5.
The CPU 5 changes the path of SW4 to the path e shown by the solid line, connects SUB3 to IFT7, and
Is controlled to connect to a service device (for example, WF10) corresponding to the PB signal. The weather forecast information from WF10 is sent to SUB3 via IFT7 and SW4.

After the call between SUB1 and SUB2 is completed, SUB2
When is on-hook, CPU5 controls SW4
The path b between B1 and B3 is reset.

Note that the SUB 3 can receive any desired service by selecting any of the NW 11, RT 12, and HR 13 by the PB signal transmitted.

The present invention is not limited to the information service shown in this embodiment, and other information service devices may be provided.

[0012]

As described above, the present invention has the effect that the waiting time can be effectively used because the subscriber during call waiting can listen to the information selected by himself / herself during the waiting time.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a call waiting system of the present invention.

[Explanation of symbols]

 1,2,3 Subscriber (SUB) 4 Speech path switch (SW) 5 Central processing unit (CPU) 6 Waiting tone trunk (CWT) 7 Information trunk (IFT) 8 PB signal receiver (PBR) 9 Waiting tone generation Instrument (TNG) 10 Weather forecast service device (WF) 11 News service device (NW) 12 Exchange rate information service device (RT) 13 Horoscope information service device (HR)

Claims (3)

[Claims] 1. When a subscriber waiting for call waiting among the active subscribers sends out a predetermined push-button dial signal, the telephone exchange confirms that the information corresponding to the push-button dial signal is waiting. Call waiting method characterized by sending to subscribers. 2. The telephone exchange responds to the push button dial signal through the information trunk after changing the connection of the waiting subscriber from the waiting tone trunk to the information trunk when receiving the push button dial signal. The call waiting system according to claim 1, wherein the call waiting system is connected to an information source device. 3. The information source device is a weather forecast, news,
The call waiting system according to claim 2, wherein the call waiting system is one of an information service device including an exchange rate and a horoscope.