JPH04241560A - Telephone system - Google Patents

Abstract

PURPOSE:To shorten the waiting time of a first called party by providing a function for announcing interruption under speaking to a second party when a call is incoming from the second party to a line under speaking with the first party. CONSTITUTION:Assuming that the call is incoming from the second party to the second subscriber line while speaking with the first party through the first subscriber line, a control circuit 8 detects the incoming call and it is recognized by an information processing circuit 9 that this call is incoming to the first subscriber line. Then, the generation of a call signal is requested to a signal transmission/reception circuit 6. This call signal is applied through a speech path switch 3 and a subscriber circuit 2 to the first subscriber line. According to the tone of this call signal, a user recognizes that the telephone call is incoming from the second party to the user itself, finishes speaking with the first party and executes hooking or the like for speaking with the second party. The circuit 8 detects a hooking signal and informs the state under speaking and it is recognized that the party is under speaking.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to telephone systems, and in particular to a so-called call waiting function that allows you to switch the other party when you receive a call from a second party while you are talking to a first party. This relates to a telephone system that provides

This type of conventional telephone system is described in "Electronic Information and Communication Handbook, edited by the Institute of Electronics, Information and Communication Engineers, Ohmsha, March 30, 1988, pages 2647-2657." In conventional telephone systems, a so-called call waiting function is provided according to the needs of users. This is a function that prevents calls from being lost because the other party is busy. Suppose that there is an incoming call from a second party to the telephone line that is currently communicating with the first party. In a telephone system having a call waiting function, a telephone set connected to this telephone line is notified by a ring tone or the like that there is an incoming call from a second party other than the one with whom the user is currently speaking. A user communicating with this telephone can switch the other party to the call from the first party to the second party who has just received an incoming call by performing hooking or the like. Further, when the user finishes the call with the second party, he or she can resume the conversation with the first party by performing hooking again.

0003

[Problem to be Solved by the Invention] However, in the conventional so-called call waiting function explained above,
There is a problem in that a second party receiving a call on a telephone line during a call does not know that the party he/she called is currently talking with a party other than himself/herself. For this reason, the second
You cannot expect the person on the other end to be willing to end the call early, and there is a risk that the original person will have to wait for a long time.In addition, the original phone line will be on hold during that time, which will result in high telephone charges. There was a fear that it would be easy. To solve this problem, simply tell the second party that the called user is currently on the phone with another party, but if the second party is In some cases, such as when the person is a person or an important guest, it is actually difficult to tell this, and this has often not been an effective solution. Therefore, an object of the present invention is to provide a telephone system that fundamentally solves the above problems.

0004

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a system in which, when a call is received from a second party to a telephone line that is in use with a first party, the telephone line The telephone system is configured to have a function that notifies a telephone connected to this fact, and a function that detects hooking information etc. from this telephone and notifies the other party of the call that the telephone has already been interrupted. This is what I did.

[0005]

[Operation] According to the present invention, since the telephone system is configured as described above, the second party who receives a call on the telephone line that is currently being called,
Before starting a call, you can know that the person you called is currently talking with someone other than you. therefore,
The above problems can be solved.

[0006]

[Example] The telephone system of the present invention allows a second party to receive a call on a telephone line that is currently being called, and before the call party is switched by the so-called call waiting function, the party that the person called is currently a party other than the user. This is to notify you that a call is in progress. Below, we explain how to achieve this.
I will explain in detail. FIG. 1 shows an embodiment of an exchange that implements the telephone system of the present invention. In FIG. 1, 1 is a subscriber line, 2 is a subscriber circuit, 3 is a communication path switch, 4 is a relay circuit, 5 is a relay line, 6 is a signal transmission/reception circuit, 7 is an audio output circuit, 8 is a control circuit, 9 is an information processing circuit. A telephone is connected to the left end of each subscriber line 1. The subscriber circuit 2 has functions such as 2-wire and 4-wire conversion, current supply, and overvoltage protection. The relay circuit 4 terminates the trunk line. In FIG. 1, the subscriber circuit 2 and the relay circuit 4 are each shown as one large block, but this is a necessary circuit for each subscriber line and trunk line. Call path switch 3
connects any subscriber line and any trunk line to subscriber circuit 2.
and the relay circuit 4. The signal transmitting and receiving circuit 6 transmits and receives various signals. The audio output circuit 7 is a circuit for the telephone system of the present invention, and outputs a message indicating that the person you called is currently talking to someone other than yourself. The control circuit 8 controls the communication path switch 3. The information processing circuit 9 performs translation of dial information into connection information, processing of various other information necessary for exchange, calculation and storage of billing information, and the like. In actual switching equipment, circuits other than those shown in Fig. 1 are often present in order to provide various services, but in Fig. 1, circuits other than those directly related to the telephone system of the present invention are omitted. There is.

[0007] An explanation will be given by taking as an example a user of a telephone connected to the first subscriber line from the top. Now, the first subscriber from the top and the first trunk line from the top are connected, and the first
Assume that you are on a call with the other party. Assume that there is an incoming call from the second party via the second trunk line from the top. The control circuit 8 detects this incoming call via the relay circuit 4 and the communication path switch 3, learns from the information processing circuit 9 that this is for the first subscriber line from the top, and sends an incoming call to the signal transmitting/receiving circuit 6. The call signal is sent to the first subscriber line from the top via the communication path switch 3 and the subscriber circuit 2. When the user hears the ringing signal, he or she learns that the second party is calling, takes a break from the conversation with the first party, and then talks to the second party. Perform hooking etc. The control circuit 8 is
This hooking signal is detected via the subscriber circuit 2 and the call path switch 3, and a message is output to the audio output circuit 7 stating that the party you called is currently talking with a party other than yourself. This message is sent to the second trunk line from the top via the communication path switch 3 and the relay circuit 4, and then the first subscriber line from the top and the second trunk line from the top are connected. Connection is made via a subscriber circuit 2, a communication path switch 3, and a relay circuit 4. For this reason,
The second party knows that the party was currently on the phone with another party before the call was connected.

[0008] When the conversation with the second party ends, the user performs hooking again. The control circuit 8 is
This hooking signal is detected via the subscriber circuit 2 and the communication path switch 3, and the first subscriber line from the top and the first trunk line from the top are connected to the subscriber circuit 2, the communication path switch 3, and the relay circuit. Connect via 4. This allows the user to resume the conversation with the first party. The first example is a normal local exchange, but the same applies to a private branch exchange.

[0009]

[Effects of the Invention] As explained in detail above, according to the present invention, when a second party receives a call on a telephone line that is currently being called, the party that he/she called is currently talking with a party other than the second party. It is possible to provide a telephone system in which this information can be known before the start of a call.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining an embodiment of an exchange that implements the telephone system of the present invention.

[Explanation of symbols]

1 Subscriber line 2 Subscriber circuit ３　　　　　Call path switch 4 Relay circuit 5 Relay line 6 Signal transmission/reception circuit 7 Audio output circuit 8 Control circuit 9 Information processing circuit

Claims (1)

[Claims] Claim 1: A function that notifies a telephone connected to this telephone line when a second party receives a call on a telephone line that is currently in use with a first party, and a hooking function from this telephone. In a telephone system having a function of detecting information, etc. and switching the calling party, when switching the calling party, the present invention has a function of notifying the second party that the caller has interrupted an already busy call. Characteristic telephone system.