JPH0851484A - Transferring method for incoming call by use of telephone exchange system - Google Patents

Abstract

PURPOSE:To reduce the cost required for the transfer of an incoming call by a telephone exchange system. CONSTITUTION:When an incoming call is made to be received in a message transmitter 21 by the dial-in operation from an originating caller, the originating caller receives the guide message from the message transmitter 21. When the depression of a second dial number by a non-illustrated ten-key group in accordance with the guide message is performed from the caller, a central control part 16 refers to a conversion memory 15 based on the depression information by the depression information by performing the depression. As a result, the transfer to an extension is performed by performing the connection switch of a speech path switch 13. The connection switch is performed for the message transmitter 22 as necessary. The originating caller receives again the guide message from the message transmitter 22. The central control part 16 transfers the incoming call to the extension of a transfer destination in the same way. Thus, the extension lines are stored corresponding to the number of lines the a main device 1 each store.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of transferring an incoming call by a telephone exchange system.

[0002]

2. Description of the Related Art A telephone switching system having a call transfer function accommodates an incoming call, automatically responds to the incoming call, then sends a guidance message to a caller of the incoming call, and after the guidance message is started to be sent, the above-mentioned calling Number sent by a person's dial operation (dial number by DTMF signal)
The device for transferring and connecting the above-mentioned incoming call to the extension of the above has been put to practical use as a device replacing the manned relay stand in the telephone exchange system. Hereinafter, this device is referred to as voice mail.

The voice mail includes a message recording section for storing the guide message to be sent to the caller side, and a DT for receiving a DTMF signal from the caller.
An MF receiver and a conversion memory for converting a second extension number corresponding to the DTMF signal into a first extension number corresponding to a DTMF signal indicating a transfer destination, and the caller receives the incoming call. Is sent, the above-mentioned message is sent from the above-mentioned message recording section to the above-mentioned calling party,
When the caller sends a DTMF signal which is the second extension number, the DTMF receiver sends the DTMF signal.
When the F signal is used as the second extension number and the conversion memory is referred to by the second extension number, but the second extension number is the same as the first extension number (that is, the call is actually made). If the person knows the first extension number of the transfer destination and the first extension number is directly sent to the voice mail), the conversion memory stores the first extension number of the transfer destination. Transfer to the corresponding extension and the calling party calls the first
If the second extension number indicating that the extension number is not known is received from the caller, the second extension number corresponding to the first extension number is received from the message recording unit.
The extension number of is sent together with the personal name of the transfer destination to the caller for each of the second extension numbers from the message recording section,
(The second extension number sent to the caller is a number that is easily remembered by the caller.) After that, the second extension number that the caller wants to transfer is sent. The second extension number is received, and is converted to the first extension number by referring to the conversion memory with the second extension number and transferred to the transfer destination first extension.

[0004]

According to the above-mentioned conventional technique, since the transfer operation is performed by the voice mail accommodated in the main device instead of the main device, the voice mail is added to the DTMF receiver in addition to the message recording unit. And the conversion memory must be provided, which increases the cost of the voice mail and limits the number of telephone terminal lines that can be accommodated in the main unit when the capacity of the conversion memory is small. If the capacity of the conversion memory is too large, on the contrary, there is a problem that the capacity of the conversion memory becomes excessive and the voice mail cannot be effectively utilized.

[0005]

In order to solve the above-mentioned problems, the present invention provides a DTMF signal sent from a caller to the main device by a DTMF receiver usually provided in the main device from the caller. The dialed second extension number is used, and the conversion memory that is normally included in the main device is connected to the second extension number pressed by the caller based on the second extension number. The first extension number, which is the terminal number of the communication path switch, is registered in correspondence with each second extension number, and the main device is provided with an answering machine or tape recorder or the like capable of sending a message. A message sending device capable of sending only a message is accommodated, and the caller prompts the message sending device to send a message by receiving the DTMF signal in the message sending device. By pressing the guide message is transmitted from the message delivery system receiving the guidance message a second extension in accordance with the guidance message,
Depressed information by pressing the button is sent to the main device,
The central control unit of the main unit uses the sent press information as the second extension number in the DTMF receiver included in the main unit, and then uses the conversion memory included in the main unit as the above-mentioned conversion memory. By referring to the second extension number as an index and recognizing the first extension number of the call path switch to be connected for transfer, the connection terminal of the call path switch of the transfer destination is recognized, and the recognized connection terminal is called. The call from the caller is transferred to the extension of the transfer destination by the operation of the main device by connecting to the external line used by the person.

[0006]

The DTMF receiver that receives the DTMF signal and uses it as the second extension number, and the number that indicates the connection terminal of the communication path switch connected to the second extension number and the extension of the transfer destination (the first extension Number) and a conversion memory, which is a memory for registering each second extension number in association with each other, are provided in the main device, and the main device accommodates a message sending device capable of sending a message, The message sending device is
The caller sends a guidance message for guiding the second extension number for transferring the incoming call, and when the caller presses the second extension number in accordance with the guidance message, the DTM
In the telephone exchange system, the F receiver refers to the conversion memory by using the second extension number as an index in the telephone exchange system by setting the pressing information by the pressing to the second extension number pressed by the caller. The number (first extension number) of the transfer destination connection terminal corresponding to the second extension number pressed by the caller is recognized by reference, and the connection terminal corresponding to the first extension number is recognized. Is connected to an external line used by the caller, it becomes possible to transfer an incoming call received from the caller to the main device.

[0007]

【Example】

[Embodiment 1] Each of the drawings explains an embodiment in which the present invention is applied to a key telephone system. FIG. 1 is a system configuration diagram shown together with a block diagram of a main unit, and FIG. 2 is registered in a conversion memory. It is a figure which shows the registration example which exists.

In the key telephone system according to the embodiment of the present invention, as shown in FIG. 1, a main unit 1 and a message sending unit 2 are provided.
1 and 22, the extension lines C1 to Cm, and the extension lines D1 to Dn are accommodated.

An example of the message sending devices 21 and 22 is a device such as an answering machine or a tape recorder capable of sending a message as described later. (The message sending devices 21 and 22 may be any devices capable of sending messages.) The main device 1 is an outside line interface 1 provided corresponding to each of the outside lines D1 to Dn as shown in FIG.
11 to 11n, extension interfaces 1211 and 1212 provided corresponding to the message sending devices 21 and 22, extension interfaces 1221 to 122m provided corresponding to the extensions C1 to Cm, and outside lines D1 to Dn. A call path switch 13 provided for setting a call path between the extension lines C1 to Cm, and a DTM.
A DTMF receiver 14 for receiving the F signal, which uses the DTMF signal as a second extension number, and a conversion memory 15.
And a central control unit 16 that collectively controls the main device 1
Etc.

The call path switch 13 is controlled by the central control unit 16 so that the outside line interfaces 111 to 11 are connected.
n and the extension interfaces 1211 and 1212
And connection terminals for connecting between the extension interfaces 1221 to 122m and the DTMF receiver 14 and accommodating the external lines D1 to Dn and the extension lines C1 to Cm to set a communication path, and the connection terminals are respectively connected to the connection terminals Is the first extension number 1311 and 1312 and 1
321-132 m and 133 are provided.

The conversion memory 15 includes the outside lines D1 to D.
The second extension number corresponding to the DTMF signal sent from n and the first extension number indicating the terminal number of the connection terminal of the communication path switch 13 for connecting the extension lines C1 to Cm to the outer lines D1 to Dn. This is a memory in which transfer information including extension numbers is stored for each dial number.

Next, the operation of the first embodiment will be described with reference to FIG.

In the following embodiment, the case where the incoming call from the outside line D1 is transferred to the extension line C1 by the transfer operation of the main unit 1 will be described.

First, when an incoming call is sent from the caller to the message sending device 21 via the outside line D1, the central control unit 16 performs a call between the outside line interface 111 and the DTMF receiver 14 by a known dial-in operation. And the call paths of the external line interface 111 and the extension interface 1211 are the first extension numbers 133 and 131 of the call path switch 13, respectively.
1 is set via the connection terminal corresponding to 1, and when the incoming call arrives at the message sending device 21 via the call path switch 13, the message sending device 21 responds to the outside line D1, for example, "This is XX. It is a stock company.Please press the extension number of the transfer destination.If you do not know the extension number, please press "7". The guidance message "" is sent to the caller by sending it to the outside line D1 through the communication path set between the extension interface 1211 and the outside line interface 111, and the caller listens to the guidance message. become.

When the caller knows the extension number of the transfer destination, for example, if the user presses the first extension number 1321 of the extension C1 by using a ten-key group (not shown) Press information (DTMF signal)
Is sent to the DTMF receiver 14 via the communication path set between the set external line interface 111 and the DTMF receiver 14, and the DT
When the MF receiver 14 sets the DTMF signal to the second extension number 1321, the central control unit 16 confirms the dial number 1321 and refers to the conversion memory 15 using the dial number 1321. And call path switch 1 corresponding to the dial number 1321
It is determined that the terminal number of No. 3 is 1321, and (the caller presses the first extension number because the extension number of the transfer destination is known, but the central control unit 16 does not use the first extension number). The number 1321 is recognized as the second extension number and the conversion memory 15 is referred to and it is determined to be the first extension number 1321.) Both of the set communication paths are disconnected and the outside line interface 111 and the above The call path with the extension interface 1221 is used as the call path switch 1
The call path is set by controlling the terminal of which the terminal number of 3 is 1321, and the incoming call from the outside line D1 is received by the extension line C1.
Transfer to

Next, a case will be described in which, after the caller receives the guidance message from the message sending device 21, the caller does not know the first extension number of the extension C1.

In this case, the caller presses the second extension number 7 by using the ten key group (not shown) in response to the guide message. Then, the pressing information (DTMF signal) due to the pressing of 7 is transmitted through the communication path between the outside line interface 111 set in the communication path switch 13 and the DTMF receiver 14 to the above D
When sent to the TMF receiver 14, the DTMF receiver 14 receives the DTMF signal, and when the DTMF signal is set to the second extension number 7, the central control unit 16
Recognizes the second extension number 7 and refers to the conversion memory 15 with the second extension number 7 to determine that the terminal number corresponding to the 7 is 1312, The call path between the outside line interface 111 and the extension interface 1211 set in the switch 13 is switched to the call path between the outside line interface 111 and the extension interface 1212, whereby the message sending device 22 is Detects the connection with the outside line D1 and displays a guidance message such as "Press 4 to call Mr. a, 5 if you want to talk to Mr. b, and 6 if you want to talk to Mr. c." Send to D1 and the caller will hear the invitation message.

Then, when the caller presses the second extension number 4 by operating a group of ten keys (not shown) from the outside line D1, (the extension number used by Mr. a is C
(1) Press information (DTMF) due to the pressing
Signal) is the external line interface 111 and the DTM.
It is sent to the DTMF receiver 14 through the communication path set by the communication path switch 13 between the F receivers 14, and the DTMF receiver 14 is connected to the DTM.
When the F signal is received and the DTMF signal is set to the second extension number 4, the central control unit 16 recognizes the second extension number 4 and performs the conversion at the second extension number 4. By referring to the memory 15, it is determined that the first extension number corresponding to 4 is 1321, and the communication path between the set external interface 111 and the extension interface 1212 and the external interface 11 are set.
1 and the call path between the DTMF receiver 14 and the call path between the external interface 111 and the extension interface 1221 are set by controlling the terminal of the first extension number 1321, and the external line D
The incoming call from 1 is transferred to the extension C1.

[Embodiment 2] FIG. 3 is a diagram showing an embodiment for carrying out the present invention in the case where incoming calls are centrally sent to the message sending device 21 in the telephone exchange system shown in FIG. .

Even in such a case, as is apparent from FIG. 3, a plurality of message sending devices for sending the same messages as the message sending devices 21 and 22 in the first embodiment are accommodated, and the above-mentioned message sending device is accommodated. Even if a caller different from the caller sends an incoming call to the message sending device 21 while the caller 21 is sending a guide message to the caller, the message sending device 21 sends the incoming call to the message sending device 21. The same guidance message is sent to the message sending device 23 which sends the same guidance message, and the calling message is sent by the caller without knowing the first extension number. If it is in the middle of sending, a guidance message similar to that of the message sending device 22 is sent, for example, a message sending device. 4 to transfer the operation of the incoming call by sending a guiding message from.

Needless to say, of course, as shown in FIG.
The main device 1 is equipped with a plurality of TMF receivers.

[0022]

As described above, according to the present invention, the DTMF included in the voice mail accommodated in the main device is provided.
The DTMF receiver included in the main device is responsible for the function of the receiver, and the information registered in the conversion memory included in the voice mail is registered in the conversion memory included in the main device. Instead of this, a message sending device such as an answering machine or a tape recorder that can send a message is accommodated in the main device, and the message sending device is provided with the above voice mail by sending only a guidance message. DTMF
The cost equivalent to the receiver and the conversion table is eliminated, and by using the conversion memory provided in the main device itself, transfer information can be stored according to the number of lines of telephone terminals that can be accommodated in the main device.

[Brief description of drawings]

FIG. 1 is a system configuration diagram shown together with a block diagram of a main device.

FIG. 2 is a diagram showing a registration example registered in a conversion memory.

FIG. 3 is a diagram showing a second embodiment.

[Explanation of symbols]

1 ... Main device 111-11n ...
External line interfaces 1211-121P ... External line interfaces 1221-122m ... External line interfaces 13 ... Call path switches 1311-131
P ... Connection terminals 1321-132m ... Connection terminals 141-14Q ...
DTMF receiver 15 ... Conversion memory 16 ... Central control unit 21-2P ... Message sending device C1-Cm ... Extension D1-Dn ... Outer line

Claims (1)

[Claims] 1. A message sending device is housed on the extension side,
In response to an incoming call from the outside line to the message sending device, a guidance message is sent from the message sending device, and then the dial number sent from the outside line is received, and the incoming call is sent from the message sending device to the dial number. In a telephone exchange system in which connection is changed to an extension, a first extension number for normal exchange control and a second extension number for connection change control are given to the extension of the telephone exchange system. And the telephone switching system includes a DTMF receiver,
There is a conversion memory for converting the second extension number to the first extension number, and the dial number sent after the guidance message is sent is the second extension number and the second extension number. A method of transferring an incoming call by a telephone exchange system, wherein a number is received by the DTMF receiver, converted into the first extension number by referring to the conversion memory, and the connection switching control is performed based on the first extension number.