JP2731961B2 - Exchange system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching system for accommodating a central office network that sends outgoing terminal information at the time of an incoming call. And a control method for an incoming call for determining an extension terminal to receive an incoming call by identifying a caller number (calling subscriber number) included in the call.

[Conventional technology]

Conventional local line incoming calls could not identify the caller, so the conventional private branch exchange detected a local line incoming call and detected a local line incoming call when terminating to a certain extension terminal. When an incoming call is made to an extension terminal that is stored for the trunk, or when the caller is conscious of the extension terminal that the caller wants to connect to, such as dial-in (DI) or additional number dial-in method (DID) Has detected that information and sent it to the designated extension terminal.

[Problems to be solved by the invention]

The present invention relates to a local line incoming call to a private branch exchange,
Although attention was paid to the local line incoming call in which the department and extension terminal to be connected by the caller were determined, in the above-described conventional technology, since the caller was not known for the local line incoming call,
The extension terminal that identified the caller and could not reach the extension determined by that, and responded to the local incoming call,
This has to be done by transferring the call to the intended department or extension terminal of the caller. The present invention provides a service in which an ISDN office line is accommodated in a private automatic telephone exchange so that a call can be made to an extension terminal determined by the caller by using the caller information included in the incoming call information. Aim.

[Means for solving the problem]

The present invention is a switching system for accommodating a network that sends outgoing terminal information when receiving an incoming call, detects an incoming call including the outgoing terminal information from the network, analyzes the outgoing terminal information, and performs the analysis. An extension terminal that receives a call is determined based on the result, and the incoming call is received by the extension terminal.

[Action]

When the central control unit of the private branch exchange detects an incoming call from an office line network that sends out the information of the calling terminal at the time of the incoming call, for example, an ISDN office line, it analyzes the calling subscriber information included in the incoming call information. Then, an incoming call is automatically received at the extension terminal determined by the calling subscriber information.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an example of a network configuration for realizing the present invention. The private branch exchange 1 (hereinafter, referred to as PBX1) to which the local line termination system of the present invention is applied, an ISDN central line network 2, and a telephone It comprises a terminal group 3, a terminal group 4 such as a telephone terminal, a facsimile, and a data terminal, and a private branch exchange 5.

The private branch exchange 1 includes a switch 101, an ISDN central office trunk 102 for interfacing with the ISDN central office network 2, a tone trunk 103 for transmitting a hold tone, a talkie trunk 104 for transmitting various voice messages, and an extension multifunctional telephone terminal. Terminal 105, multi-function terminal interface circuit for interfacing extension multi-function telephone terminal 105 and switch 101
106, extension telephone terminal 107, line interface circuit 108 for interfacing extension telephone terminal 107 with switch 101, facsimile 109, facsimile interface circuit 110 for interfacing facsimile 109 with switch 101, data terminal 111, A data terminal interface circuit 112 for interfacing the data terminal 111 with the switch 101, an intermediary console 113, an intermediary console interface circuit 114 for interfacing the intermediary console 113 with the switch 101, and a voice mail box for storing voice messages. 115, a voice mail interface circuit 116 for interfacing the voice mail box 115 with the switch, a central control unit 117 for controlling the entire PBX 1 including a program describing a procedure for performing exchange control, storage and processing of control data Such as one Maintain the PBX1 as a whole, such as a storage unit 118 that stores time, a number analysis unit 119 that identifies a plurality of calling subscriber numbers according to instructions from the central control unit 117, and notifies the central control unit 117 of the control information, and a trunk mounting of the PBX1. A maintenance terminal 120, a central control unit 117, a storage device 118, a number analysis device 119, and a central control system bus 121 for transmitting and receiving data among the maintenance terminals 120.

Note that the number analysis device 119 is for performing distributed control in order to reduce the load on the central control device 117, and is unnecessary depending on the processing capacity of the central control device 117 and the storage capacity of the storage device 118. is there.

(1) Incoming call information FIG. 2 shows a call setup message indicating that a call has been sent to the ISDN central office network or that an incoming call has arrived from the ISDN central office network. In this information, the present invention utilizes the calling party number, calling party sub-address, called party number, called party sub-address, and user. The calling number is
The subscriber number and calling sub-address of the calling terminal (caller) are the sub-address of the caller that indicates the identification of the terminal when a plurality of terminals use the same subscriber,
The called number is the subscriber number of the receiving terminal (called party), and the called address is the subaddress of the called party indicating the identification of the terminal to be called when multiple terminals use the same subscriber number, and the user The user is an area where free information exchanged between the calling and receiving terminals is performed. Also,
The calling party number, calling party sub-address, called party number, called party sub-address and user / user may be omitted depending on the call type.

FIG. 3 shows some of the contents of the information received by the called party through the ISDN local line network in which the calling party number, calling party sub-address, called party number, and called party sub-address of the individual setting message, which is setting information on the caller side, are shown. It is shown divided into patterns,
“×” on the calling side indicates unset information, “、” indicates setting information, “×” on the called side indicates non-received information, and ““ ”indicates received information. The calling number, calling subaddress, and called subaddress can determine whether or not information is set depending on the will of the caller. Also, insert and delete the calling number
Since it can be performed within the ISDN central office network, the control information can be specified by the caller.

(2) Incoming Call Processing Next, FIG. 1, FIG. 4-1, FIG. 4-2, and FIG.
Referring to FIG. 5, FIG. 5-2, FIG. 6-1, FIG. 6-2, FIG. 8, FIG. 9 and FIG. 10, the private branch exchange for an incoming call from the ISDN central office to the private branch exchange. Will be described.

When a call setup message, that is, an incoming call arrives from the ISDN central office network 2, the ISDN central office trunk 102 detects it and notifies the central control unit 117. Upon receiving the incoming call information from the ISDN trunk 102, the central control unit 117
A call control program describing the call control procedure shown in FIG. First, upon detecting an incoming call (401 in FIG. 4-1), the central control unit 117 determines whether it is an incoming call from the ISDN central office network 2 or an incoming call from a general office network (not shown) (FIG. 4). 402, 402), in the case of an incoming call from the general line network, the terminal is connected to the relay console 113 as in the prior art (FIGS. 4-1 and 4).
Ten). On the other hand, when it is recognized that the incoming call is from the ISDN office network 2, a call is set up with the ISDN office network 2 (4-1).
403), and detects incoming call information such as the calling number, calling subaddress, called number, and called address included in the call setting message (FIG. 4-1, 404), and temporarily stores the information in the storage device 106. It is stored (FIG. 4-1, 405). Next, the central controller 117 determines whether or not the stored incoming call information is provided with a destination sub-address (FIG. 4-1, 406). The extension multifunctional telephone terminal 105, the extension telephone terminal 107, the facsimile 109, and the data terminal 111 are collectively referred to as an extension terminal. 4-2, 413). If the destination subaddress is not assigned, it is determined whether or not the calling number is assigned to the incoming call information (FIG. 4-1, FIG.
407) If no calling number is given, the call is received at the relay console and the conventional incoming call processing is performed (FIG. 4-1, 41).
0). When the calling number is assigned, the storage device 118
The incoming call information temporarily stored in the terminal is read out and edited into a data structure to be notified to the number analyzing device 119 (see FIGS. 4-1 and 4).
08), the outgoing subscriber data 70 for generating the outgoing subscriber data and notifying the outgoing subscriber number as shown in FIG.
1 is transmitted (FIG. 4-1, 409). The calling subscriber data includes a calling number (ODSi), a calling subaddress (OSAj), and an identification code (ID code) for identifying a plurality of calling subscriber data. Upon receiving the calling subscriber data 701 and detecting the request for the number analysis, the number analysis device 119 starts the analysis according to the procedure shown in FIG.

Next, a method of analyzing the numbers will be described with reference to FIG. Upon detecting the search request information from the central control device 117, the number analysis device 119 first monitors the number analysis request (eighth.
When there is a request, analysis request data (FIG. 7, 701) is taken in, and an identification code is stored (FIG. 8, 803). Next, the number analysis device 119 searches the calling subscriber information table (ODSDAT) shown in FIG. 9 based on the calling number and calling subaddress included in the analysis request data (FIG. 8, 804). In FIG. 9, ODSDAT
Is for analyzing the calling number, and stores the calling subaddress analysis data for the calling number and the first data position of the table storing the extension terminal information. OSADx stores the originating subaddress analysis data and the actual extension terminal information. The search procedure first compares the calling number notified from the central control device 117 with the calling number in the ODSDAT, and when the calling numbers match, the OSADx
, And sequentially compares the calling subaddress notified from the central control device 117 with the calling subaddress in the OSADx to extract the corresponding extension terminal information. At this time, if the calling number is not registered in ODSDAT, there is no extension terminal information. If the calling subaddress is unnecessary, the calling subaddress in the OSADx is registered with a value of “0”, so that the calling subaddress is irrelevant and the extension terminal information can be extracted only by the calling number.

After the search for the calling subscriber information is completed, the number analysis device 119
Determines whether there is calling subscriber information (FIG. 8, 80
5) If there is, the notification data to be notified to the central control unit 117 is edited based on the search result (806 in FIG. 8), and if not, all the notification data is set to “0” (FIG. 8). ,
807) An identification code is assigned (FIG. 8, 808) and sent to the central control unit 117 (FIG. 8, 809).

The central control unit 117 receives the analysis result from the number analysis unit 119, determines whether there is an extension terminal corresponding to the search result (FIG. 4-2, 412), and determines the extension corresponding to the calling number. If there is no terminal, the call is received by the attendant console and the incoming call processing is performed as usual (410 in FIG. 4-1). When only the receiving terminal is determined, the extension terminal is called (step 410). 4-1) (Fig. 4-1)
414,415,416,417).

In addition, when the called extension terminal is busy due to a busy state or the like, a function of arriving the incoming call at the relay station or at another predetermined extension terminal may be considered.

Next, for a plurality of extension terminals, a connection process for directly receiving a call to any one of the extension terminals is described in the fifth.
This will be described with reference to the drawings and FIG.

FIG. 10 is a diagram showing a table in which a plurality of extension terminal information is registered for the calling subscriber by expanding the calling subscriber information table shown in FIG. 9, and the search of this table is performed as described above. This is the same as the procedure for searching the table shown in FIG.

First, an incoming call is detected according to the flowchart shown in FIG. 4-1. If a plurality of extension terminal information is registered for the calling subscriber, the table shown in FIG. 10 is added to the flowchart shown in FIG. A search is made for a called extension terminal based on the received call (FIG. 5, 501). Next, as a result of the search, it is determined whether or not the calling subscriber has a called extension terminal (FIG. 5, 50).
2) If not applicable, call to the attendant console (No. 4-1)
(FIG. 410) The conventional incoming call processing is performed, and if there is a corresponding terminal, it is determined whether the corresponding terminal is singular or plural (FIG. 5, 503). As a result of the discrimination, in the case of a single terminal, the terminal to be called is determined, the fixed incoming extension terminal is called (FIG. 5, 506), and after a response is detected (FIG. 5).
(Fig. 507) Set the communication path. If there are a plurality of extension terminals, a request is made to the originating terminal to select an extension terminal to receive (504 in FIG. 5). The request for selecting an extension terminal is made, for example, by transmitting information such as the section name or personal name of the extension terminal corresponding to the incoming call from the PBX 1 to the transmission terminal, and displaying the information on the display (see FIG. (Not shown) as a menu screen, or a voice message is transmitted by a voice generating device such as the talkie trunk 104, and the caller transmits the menu screen or
The desired extension terminal of the destination is selected by voice message, and the selected information is notified to the PBX 1 (FIG. 5, 50).
Five). The extension terminal selection request from the PBX1 to the calling terminal and the selection information of the extension terminal from the calling terminal 3 to the PBX1 are easily transmitted by using the user / user area of the ISDN D channel protocol. (Details will be described later). The PBX 1 receives the selection information of the extension terminal from the originating terminal 3, determines the extension terminal to receive, and calls the extension terminal (the fifth terminal).
When a response is detected (FIG. 5, 507), a call path is set and a call is made (FIG. 5, 508, 509, 51).
0).

Next, the extension terminal to which a call is received is determined, and when the extension terminal is called, when the connection is not possible due to busy or the like, refer to FIG. 1, FIG. 6-1 and FIG. 6-2. Will be explained.

First, a call is made to the extension terminal (see FIG. 6-1, 60).
1) It is detected whether the extension terminal is in an idle state or in a state of being unable to receive a call because it is busy (FIG. 6-1, 602). If it is idle, the system waits for a response (FIG. 6-1, 603), sets up a communication path, and starts a call. If the connection is not possible, information indicating that the destination extension terminal is not connectable is transmitted to the calling terminal (FIG. 6-2, 60).
Along with 7), the processing selection request is displayed on the display of the transmitting terminal 3, or the caller is notified by a voice message (FIG. 6-2, 608). The menu contents include, for example, an incoming call termination process for receiving a call at the attendant console and performing a connection process similar to the conventional process, an absence response or proxy response transfer process for forwarding a call to another preset extension terminal,
Camp-on registration process to camp on incoming calls,
A message registration process for registering a message in the voice mailbox 115, a disconnection process for disconnecting a call, and the like can be considered. The caller selects a desired function from the menu (609 in FIG. 6-2), and sends the selected information to P from the calling terminal.
Send to BX1. The PBX 1 receives the selection information, processes the incoming call at the attendant console (FIG. 6-2, 610), transfers the other extension terminal (FIG. 6-2, 611), and processes the camp-on registration (FIG. 6-2). 612), message registration processing (FIG. 6-2, 6)
13), disconnection processing (FIG. 6-2, 614) and the like are performed according to the selection information received from the transmitting terminal 3, and the connection processing ends.

(3) Transmission processing Next, the central control unit 11 for the transmission of the office line from the extension terminal is executed.
The transmission process of 7 will be described with reference to FIG. 1 and FIG.

First, when the PBX 1 detects a request for an outgoing line from an extension terminal (1101 in FIG. 11), the type of the outgoing line is either a call to a general office line network (not shown) or an ISDN office line network. (2) (FIG. 11, 1102), and in the case of transmission to a general line network, the same transmission processing as in the past is performed (FIG. 11, FIG. 11).
09), in the case of transmission to the ISDN central office network 2, the called number, calling party number, etc. are edited in the call setup message and the message is sent to the ISDN central office network 2 (FIG. 11, 1103). At this time, the called party number is set as the called party number, and the called party contains the information of the calling party number. For example, if the PBX on the called side performs the incoming call processing as described above, a certain fixed Connected to extension terminal. Therefore, it is possible to respond to the case where it is desired to make a call to an extension terminal different from the usual one by changing the transmission operation of the extension terminal that makes a call when making a call, stopping the transmission of the calling number, and inserting the called sub address. Become. As an example of the operation, a call can be made without a calling number by pressing an arbitrary function button of the extension terminal or dialing a telephone number of the other party after dialing a predetermined special number. Next, the PBX 1 detects a call message from the ISDN central office network 2 (FIG. 11, 1105), and waits for a response. Also, at this time, for example, from the destination PBX,
As described above, information about the destination terminal is notified,
When the information is displayed on the display of the calling extension terminal (FIG. 11, 1106), a response corresponding to the inquiry is made (FIG. 11, 1107), and the response is sent to the destination PBX and the response is sent. Transition to the waiting state and start talking.

(4) Operation Sequence Next, an outgoing / incoming call sequence when using the ISDN central office network will be described.

FIG. 12 shows a normal outgoing / incoming call sequence when using the ISDN central office network. The calling terminal goes off-hook and dials the other party's phone number.
Send to the local line network. Thereafter, a call setting acceptance message is received, and the calling side recognizes that it has entered the permissible state, and receives a call message and a response message sequentially to enter the talking state. The receiving terminal receives the call setup message from the ISDN local line network, recognizes that the incoming call has arrived, and returns a call message. At this time, an incoming call display such as ringing is performed on the receiving terminal, and a response message is transmitted when the receiving terminal responds, and a response confirmation message is received from the ISDN local line network to enter a call state. In the above-described incoming call processing, when only one extension terminal that receives a call to the calling terminal is determined, the processing is performed according to this sequence.

Next, with reference to FIG. 13, a sequence of performing the incoming call processing of the present invention for a plurality of extension terminals to a calling terminal will be described.

In the above-described incoming call processing, the central control device 117 detects the analysis result of the calling terminal from the number analysis device 119, and when there are a plurality of target extension terminals, for example, the information as shown in FIG. When detected, the extension terminal information is set in the call message that is a reply message to the call setup message, and the caller is notified. The calling terminal notifies the caller of the extension terminal that is the target of the call by receiving the information, and the caller selects a party to be connected from those extension terminals, and the user / user area. Is notified to the receiving terminal by the information message of (1). The receiving terminal receives the information,
Call the extension terminal desired by the caller. The calling terminal is displayed on the display of a multi-function terminal having a display and a function button, and an extension terminal to which a call is received can be designated by operating the function button. In addition, the transmission and reception of information of the extension terminal, etc., the transmission terminal of the ISDN interface,
It can be easily realized by using the user-user information defined between the receiving terminals.

Furthermore, if the number of extension terminals to be received becomes extremely large when receiving a call using only the calling number information, instead of specifying the terminal to which the caller will receive in the above procedure, the calling subaddress and the destination By selecting for each group, the number of extension terminals to be called can be reduced.

(5) Conversion Table Maintenance Method Next, a method of creating and maintaining the transmission terminal information data table shown in FIGS. 9 and 10 will be described.

FIG. 14 shows an example of information transmission / reception at the time of data creation. In the figure, 〜 indicates the flow of information when creating data. The information notifies the central control device 117 of the data input from the external input device 120. The information is used when the receiving terminal specifies the caller who receives the incoming call, requests data registration by operating the function buttons of the multi-function terminal 105, and transmits the data input from the multi-function terminal 105 to the central control unit. Notify 117. Also, the information can be obtained by inserting a special code decided between the caller and the callee in the call setup message when the caller calls the corresponding station when the caller specifies the extension terminal. , A call setup message is received by the ISDN central office trunk 102, and the central control unit 117 detects it and receives the special code, thereby recognizing the data registration request. The central controller 117 notifies the number analyzer 119 by those data registration requests,
The number analysis device 119 creates calling terminal information data based on the information. Further, when the extension information of the extension terminal is changed, the central control unit 117 may update the calling terminal data by notifying the old extension number and information indicating the new extension number to the number analysis device 119. It is possible.

〔The invention's effect〕

According to the present invention, an incoming call from an office line network that sends outgoing terminal information at the time of an incoming call from an ISDN office line network or the like to a private branch exchange can determine an incoming terminal by an originating subscriber number, For the calling terminal or calling subscriber who can determine the extension terminal to receive, connect to the target extension terminal without causing connection delay due to transfer operation from the relay console (reception extension terminal) etc. And the connection time can be reduced.

Further, as an application example, it is possible to easily enable a call distribution function of automatically changing a relay station that receives a call according to a call area of a call terminal.

[Brief description of the drawings]

FIG. 1 is a system and network configuration diagram showing one embodiment of the present invention, FIG. 2 is a diagram for explaining the configuration of a call setup message, and FIG. 3 is a calling number and calling subaddress of the call setup message shown in FIG. , Called number and called sub address are sent from the calling terminal
Diagram showing the pattern of the content of the information transmitted to the terminating exchange side through the ISDN central office network, FIGS. 4-1 and 4-2 are flowchart diagrams showing the procedure for terminating processing, and FIG. FIG. 6A and FIG. 6B are flowcharts showing a procedure for receiving a call when a plurality of extension terminals are present. FIG. 6-1 and FIG. 6-2 show a procedure when the incoming extension terminal is busy and cannot receive a call. FIG. 7 is a flow chart showing transmission and reception of data between the central control device and the number analysis device in FIG. 1, FIG. 8 is a flow chart showing the number analysis procedure, FIG. 9 and FIG. FIG. 11 is a diagram showing stored data for retrieving machine information, FIG. 11 is a flowchart showing an outgoing call processing procedure, FIGS. 12 and 13 are diagrams showing an outgoing / incoming call sequence when using an ISDN office line, FIG. The figure is shown in Fig. 9 and Fig. 10.憶 is a diagram for explaining how to create and maintain how data. 1,5… private branch exchange 2… integrated services digital network (ISDN network) 3… telephone terminal 4… terminal group

Claims (1)

(57) [Claims] Claims: 1. A plurality of extension terminals are accommodated,
A switching system accommodating a line of a network that sends outgoing terminal information at the time of receiving an incoming call, storing means for storing extension information indicating one or a plurality of the extension terminals in association with the outgoing terminal information; An incoming call detecting means for detecting an incoming call including the outgoing call terminal information, an extracting means for extracting the outgoing call terminal information from the incoming call detected by the incoming call detecting means, Discriminating means for discriminating whether one or a plurality of the extension information corresponding to the extracted calling terminal information is stored; and wherein the discriminating means only has one extension information corresponding to the calling terminal information. When it is determined that the extension information is stored, the extension terminal corresponding to the extension information receives the incoming call, and the determination means corresponds to the transmission terminal information. When it is determined that a plurality of extension information is stored, selection request means for transmitting selection request information for prompting selection of a destination extension terminal to the line based on the extension information; And a means for receiving response information to the selection request information from the terminal and recognizing a destination extension terminal, and causing the extension terminal to receive the incoming call.