JP2000224311A - Automatic trunk line transfer system in private branch exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a transfer operation by identifying a transfer destination corresponding to a caller and to perform an efficient operation by comparing caller telephone number information with an information storage memory holding a transfer destination memory registered beforehand and deciding the transfer destination at the response of call termination from a public network. SOLUTION: A private branch exchange 10 is provided with a transfer telephone trunk unit 101 for connecting a transfer origin and the transfer destination by a subscriber line, a memory 104 for receiving and storing caller number information sent our from a subscriber exchange, the memory 106 for storing the transfer destination corresponding to a call terminated opposite telephone number by setting it beforehand, a decision table for judging the transfer destination from the opposite party telephone number and a central processing unit 107 for controlling the entire private branch exchange. Then, at the response of the call termination from the subscriber line, the caller telephone number information sent out from the subscriber exchange and the information storage memory 106 for holding the transfer destination memory registered beforehand are compared. Then, the transfer destination is decided and the transfer destination corresponding to the caller is identified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic line transfer function of a private branch exchange, and more particularly to a private branch exchange which determines a transfer destination telephone number based on originating telephone number information transmitted from a subscriber line exchange and performs transfer. is there.

[0002]

2. Description of the Related Art Conventionally, some private branch exchanges have a telephone transfer function for automatically transferring a private telephone to a transfer destination registered in advance when an incoming call is received from a subscriber line. Also, determine whether the caller's phone information is registered,
A procedure for transferring to the designated transfer destination only when the telephone information of the caller is already registered is disclosed in Japanese Patent Application Laid-Open No. 7-162529.
However, there is no mention of a method of determining a transfer destination according to telephone information of a caller and performing transfer.

[0003]

As described in the prior art, in the telephone transfer function of the private branch exchange, all incoming calls are transferred to a pre-registered transfer destination regardless of the caller, and the importance is low. Calls are forwarded to the telephone, which makes it difficult to handle telephone calls.Also, even if it is possible to determine whether or not to forward calls based on the caller's telephone information, for example, when a person in charge is determined for each customer such as a sales department Even if you use the telephone transfer function at the office private branch exchange, the transfer destination will be transferred to one place regardless of the other party, so it will take two or three times to contact the person in charge I will.

[0004] An object of the present invention is to solve the above-mentioned problems, and it is possible to identify a caller's telephone number and perform transfer processing to a transfer destination corresponding to the caller, thereby achieving more efficient operation. It is to realize a simple transfer telephone function.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a modem circuit for receiving outgoing telephone number information transmitted from a subscriber line exchange when receiving a call, and temporarily stores the outgoing telephone number. It consists of a calling number information storage memory and a transfer destination determination table that determines a transfer destination telephone number from the caller number stored in the transmission number information storage memory. The transfer destination is called and the transfer is performed.

Further, even for an incoming call for which the caller number received by the modem circuit is not registered in the transfer destination judgment table, a message can be sent to the caller by a message sending circuit built in the automatic line transmission system. It is what it was.

In addition, when receiving a call from a subscriber line, if the caller does not notify the caller's telephone number such as a call with "184" added to the beginning of the telephone number or a call from outside the caller telephone number service providing area, The message can be transmitted by a message transmission circuit built in the private branch exchange. The use of the PB signal allows the caller telephone number to be identified even when receiving a call from a terminal that cannot send the caller telephone number, such as a public telephone.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

In FIG. 1, reference numeral 10 denotes a private branch exchange.
A transfer source terminal 11 is, for example, a general telephone, a mobile telephone, or the like. A transfer destination terminal 12 is, for example, a general telephone or a mobile telephone. Reference numeral 13 denotes a subscriber line.
3, a private branch exchange 10 and a transfer source terminal 11 and a transfer destination terminal 12 are connected by a telephone line. Private branch exchange 1
At 0, reference numeral 100 denotes a call path switch, and 101 denotes a transfer telephone trunk unit (hereinafter, referred to as TRI) for connecting the transfer source 11 and the transfer destination 12.

Reference numeral 102 denotes a modem for receiving the caller's telephone number, and reference numeral 103 denotes a PB signal (the other party's telephone number) transmitted from the caller in response to the reception from the caller's telephone number not notified terminal. Signal receiving circuit (hereinafter referred to as PB
R). 104 is a caller telephone number memory for storing the caller telephone number received by the modem 102.

Reference numeral 105 denotes a transfer destination determination table for holding and determining data for determining a transfer destination telephone number corresponding to a caller telephone number in advance. A central processing unit 107 controls the entire private branch exchange 10, and a storage device 106 stores various exchange operation control programs, office data, and the like. Reference numeral 108 denotes a message sending circuit for sending a message urging the caller to be notified of the caller's telephone number and a message for requesting a caller's telephone number input.

Next, the operation of the private branch exchange 10 for the transfer destination determination processing will be described.

FIG. 2 shows a transfer destination determination table for determining a correspondence between a caller number and a transfer destination telephone number.

FIG. 3 is a flowchart showing the operation of identifying the caller telephone number information and determining the transfer destination. The operation will be described below according to the flowchart. The call received in step S1 first receives the caller telephone number in step S2. The processing when reception has not been performed will be described later. After receiving the caller telephone number in step S2, the caller telephone number is stored in step S3, and the transfer destination table registered in advance is referred to in step S4.

After comparing the caller telephone number accumulation table and the transfer destination table in step S5, if the caller telephone numbers registered in advance match, the transfer processing in step S6 is performed. After comparing the caller telephone number accumulation table and the transfer destination table in step S5,
If a calling telephone number not registered in the transfer destination table is received, a disconnection message is sent to the caller in step S7, and then disconnection processing is performed in step S8.

FIG. 4 shows a process when the caller telephone number cannot be received in step S2 of FIG. This process will be described with reference to the following flowchart. If the caller intentionally performs the non-notification process in the case where the caller telephone number cannot be received (when dialing with "184" before dialing the other party's telephone number), the caller is notified in step S11. After transmitting a message prompting the notification of the caller telephone number, the line is disconnected in step S12.

FIG. 5 shows a case where the caller terminal cannot be received and the caller terminal is a caller terminal that cannot transmit the caller telephone number and calls from outside the caller telephone number notification service providing area. After sending a message prompting the user to input the telephone number of the caller with a PB signal, a PB signal is received in step S12, and the caller telephone number is identified in step S13. The transfer destination table is referenced in step S4.

FIG. 6 shows the transfer operation after the transfer destination is determined. Hereinafter, description will be made according to the flowchart.
If a transfer instruction is issued in step R1, step R2
It is determined whether there is an outside line circuit (TRI) for calling the transfer destination. If there is no outside line (TRI) and if the incoming call continues in step R3, the process of step R2 is repeated. If the incoming call has stopped, the transfer process is terminated and the line is disconnected.

If there is an empty line (TRI) in step R2, RBT is sent to the receiving side in step R4, and the extra line (TRI) is supplemented in the calling side, and the transfer destination telephone number is set in step R5. Dial. If a reverse signal of the transfer destination response is detected in step R6, the process proceeds to step R7.
To connect the caller and the transfer destination and end the transfer process.

If the other party's response signal cannot be detected in step R6, a time-over determination is made in step R8. If the time is over, disconnection processing is performed in step R9. In R6, the system waits for a response from the partner.

As described above, the transfer destination is identified by the caller telephone number of the caller, the transfer destination is determined by the transfer destination determination table, and the office line automatic transfer is enabled.

[0023]

According to the present invention, in a private branch exchange, a transfer telephone trunk unit for connecting a transfer source and a transfer destination via a subscriber line, a memory for receiving and storing caller number information transmitted from the subscriber line switch, A memory for storing a transfer destination corresponding to a called telephone number called by setting in advance, a determination table for determining a transfer destination from the called telephone number, and a central control device for controlling the entire private branch exchange. In response to an incoming call from the subscriber line, the caller telephone number information sent from the subscriber line exchange is compared with the information storage memory that holds the transfer destination memory registered in advance, and the transfer destination is determined. It is possible to identify the transfer destination corresponding to the transfer function and perform the transfer operation, and to enable more efficient operation by using a single device with a plurality of persons having their own transfer device.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a local line automatic transfer system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a data configuration of a table for determining a telephone number of a caller and a telephone number of a transfer destination in the embodiment of the present invention.

FIG. 3 is a flowchart showing an operation of determining a telephone number of a caller and a telephone number of a transfer destination according to the embodiment of the present invention.

FIG. 4 is a flowchart showing a process in a case where a calling telephone number cannot be received and a caller intentionally sets a non-notification of the calling number in the embodiment of the present invention.

FIG. 5 is a flowchart showing a process in the case of an incoming call from a terminal that cannot be notified of the caller's telephone number and from outside the service area according to the embodiment of the present invention.

FIG. 6 is a flowchart illustrating processing of a transfer operation according to the embodiment of the present invention.

[Description of Signs] 10 private branch exchange, 11 transfer source terminal, 12 transfer destination terminal, 13 subscriber line, 100 communication path switch, 10
1. Transferring telephone trunk unit circuit (TRI), 102
... Caller number receiving modem 103, PB signal receiving circuit (PBR) 104, caller telephone number storage memory 10,
5: transfer destination determination table, 106: main memory, 10
7. Central processing unit.

Claims (3)

[Claims] 1. A private branch exchange that implements a caller telephone number notification service (number display service).
A transfer telephone interface that connects to a subscriber line and connects a transfer source terminal and a transfer destination terminal, a modem that receives call telephone number information sent from a subscriber line exchange, and a call number information storage memory that stores the call telephone number information, which are registered in advance A transfer destination determination table for determining a transfer destination of an incoming call for each calling number, a transfer control unit for performing a process of transferring an incoming call to a transfer destination, and a central processing unit for controlling the entire private branch exchange. When an incoming call is received from the subscriber line, the outgoing telephone number information sent from the subscriber line is stored in the outgoing telephone number information storage memory, and the contents of the forwarding destination judgment table registered in advance are compared. An automatic line transfer system in a private branch exchange, which performs a transfer process to a corresponding transfer destination. 2. An automatic line transfer system according to claim 1, wherein when the caller receives a call which refuses to send outgoing telephone number information (add "184" before dialing the other party's telephone number). Automatic dialing system characterized by sending a voice message requesting a calling number to a caller by a message sending circuit built into the automatic line sending system when dialing and non-notifying contracts are performed) It is. 3. An automatic line transfer system according to claim 1, wherein when a call is received from a public telephone and outside the caller ID notification service providing area, the caller is notified of the caller's telephone number by a PB signal. Transmitting a voice message requested by a telephone line, and enabling a PB signal receiving circuit provided in the automatic line transmission system to identify the telephone number of the caller. System.