JPH04199959A - Concentrated response controller - Google Patents

Abstract

PURPOSE:To continue concentrated response service and to diversity the danger of abnormal congestion by selecting whether respective private automatic telephone exchanges concentration-response to an incoming call or they are made to concentration-respond to it when plural private automatic telephone exchanges storing attendant boards receiving the incoming call of a trunk line are installed in a network. CONSTITUTION:The private automatic telephone exchanges 1a-1c are connected with call units 12 and 14 by a signal line 15 receiving a signal by a common line signal system and they constitute the network. Reception stands 10a and 10c are connected by the common line signal system consisting of the call units 12 and 14 in the prescribed private automatic telephone exchanges 1a and 1c in the private automatic telephone exchanges 1a-1c and they receive the incoming call from the trunk lines 11a and 11c. When plural private automatic telephone exchanges 1a and 1c storing the reception stands 10a and 10c are installed, selection means 3 are installed in respective private automatic exchanges 1a-1c and they select whether respective private automatic exchanges 1a-1c concentration-respond to the incoming call for the central trunk or they are cased to concentration-respond to it. Thus, concentrated response service can be continued and the danger of abnormal congestion can be distributed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides a method for collectively responding to incoming central office line calls in a network in which a plurality of private automatic telephone exchanges are connected by speech lines and signal lines, as well as for responding to calls during this call. The present invention relates to a centralized response control device for making a response private branch automatic telephone exchange variable.

(Prior Art) Conventionally, in the case of a dedicated line network system in which multiple private automatic telephone exchanges (hereinafter referred to as PBXs) are connected using a common line signaling method, for example, in the connection between two sets connecting PBXa and PBXb, , each PBXa, PBXb
If you want to centrally respond to incoming calls to each of these central office line trunks, decide in advance that a specific PBX, for example, PBXa, will be the centrally responded PBX, and then use PBXb
If your PBX is unable to handle incoming calls,
A centralized response is provided to BXa by transferring incoming calls to the central office line.

In this case, the PBXa displays and processes incoming calls to the central office line trunk accommodated by its own PBX and incoming calls to the central office line trunk accommodated by the PBXb on the same incoming call button.

(Problems to be Solved by the Invention) In the case of the dedicated line network system in which the conventional PBXs are connected using a common line signaling method, the following problems occur.

In other words, one of them is that it is necessary to decide in advance the PBX that will respond centrally, so even if multiple PBXs that accommodate relay boards are installed in the network, the IPBX must be fixed and centrally respond, so if , if the PBX that responds centrally can be in a state where it no longer functions,
It will no longer be possible to receive calls to the relay console as an intra-network service.

This is insufficient in terms of risk distribution in the event of a failure or disaster.

In addition, incoming calls to the relay stand of a PBX that responds centrally are displayed on the button that indicates incoming calls from the same central office line, whether it is to your own PBX or to another PBX.
The person handling the relay stand cannot recognize which PBX the call is coming from.

Therefore, such conventional centralized response is limited only to the centralized response of incoming calls on the central office line, which can be satisfied with various response methods, and is limited to the centralized response of incoming calls on the central office line, which can be satisfied with various response methods. No response is possible.

The purpose of the present invention is to make the PBX that handles centralized responses variable when there are multiple PBXs accommodating reception boards such as relay boards in a network, and to To provide a centralized response control device that can recognize which PBX an incoming call is directed to when a call is received.

(Means for Solving the Problems) In order to achieve the above object, the present invention connects a plurality of private automatic telephone exchanges connected by a communication line and a signal line for receiving signals according to a common line signaling system and forming a network. , a reception desk which is connected by a common line signaling system consisting of the above-mentioned telephone line and a signal line in a predetermined private automatic telephone exchange among the plurality of private automatic telephone exchanges and accepts incoming calls from the office line, and this reception desk. When a plurality of the above-mentioned private automatic telephone exchanges are installed, each private automatic branch exchange is provided to select whether each private automatic branch exchange will respond centrally or centrally to incoming calls to the central office line trunk. and means for making it possible to identify a destination private automatic telephone of an incoming call in the central automatic private telephone exchange.

(Operation) Therefore, according to the present invention, selective switching between incoming calls at one's own on-premises automatic telephone exchange and incoming calls at other on-premises automatic telephone exchanges (hereinafter referred to as system mode) allows the other on-premises automatic telephone exchange to respond intensively to incoming calls. When a private automatic telephone exchange receives an incoming call on a central office line, it sends an activation signal to the target private automatic telephone exchange.

When the target private automatic telephone exchange receives this activation signal, it checks the incoming call status of its own private automatic telephone exchange, and
If it is possible to receive a call, it processes the call and sends a response signal indicating that the call is acceptable.

The private automatic telephone exchange that is attempting to respond centrally receives this reply signal, recognizes the completion of the call, and thereafter continues until the system mode changes to ``incoming call to own private automatic telephone exchange''.
Incoming central office line calls to the own private automatic telephone exchange are transferred to the target private automatic telephone exchange.

However, if the activation signal is sent to the target automatic telephone exchange, and a signal indicating that incoming calls will not be accepted is returned, the target automatic telephone exchange will recognize the incoming call status as unable to receive calls, and from then on, Since incoming calls on the central office line are not transferred to the target private automatic telephone exchange, invalid activation will not be repeated.

On the other hand, the target private automatic telephone exchange stores the private automatic telephone exchange that has returned a signal indicating that it will not accept incoming calls, and when the state changes to allowing incoming calls, a call is received to this private automatic telephone exchange. Since this private branch automatic telephone exchange can recognize the incoming signal state of the target private branch automatic telephone exchange, it is possible to transfer the incoming call to the central office line again.

(Example) Hereinafter, one embodiment of the present invention will be described in detail using the drawings.

FIG. 1 shows a PBXI, which includes a switch 2, a central control unit 3 that controls the entire PBX and includes a program that describes the procedure for performing exchange control, and a storage device [4, A common line signaling device 6 that transmits and receives signals using the signal line 5 in the common line signaling system;
A central control system bus 7 is provided for transmitting and receiving data between each interface circuit, interface trunk, and central control unit 3. Note that 8 is a communication line and 9 is a common line trunk.

FIG. 2(a) shows an example of a network configuration for realizing the present invention. Each PBXla-PB
Xlc accommodates the central office line trunk line and extension terminals, and PBXla and PBXlc further accommodate central office lines 11a and l.
A relay stand 10 serves as a reception stand for receiving incoming calls from the LC.
a, loc is accommodated. Each of these PBX1a~
The ICs are connected by a common line signaling system consisting of communication lines 12 to 14 and a signal line 15. Note that 6a to 6c are common line signaling devices, and 17a to 17c are terminal devices.

Next, the operation will be explained according to an operational example with reference to FIG. 2(b) to FIG. 2(g).

(1) When the concentrated response shown in FIG. 2(b) is not performed.

PBXI a sets the system mode to receive calls from its own PBX.

As a result, as shown in FIG. 3(a), the step S1
In step S2, from the "office line trunk empty" state, perform rlR.
When a "signal" is detected, "incoming call from central office line" is recognized in step S3, and as shown in FIG. 3(b), the system mode is determined to be "incoming call from own PBX" in step S4, and "incoming call processing from own PBX" is performed. I do.

PBXlb is the same as upper product PBX1a.

PBXlc is the same as the upper product PBX1a.

(2) When PBXla in FIG. 2(c) becomes a centralized response PBX.

PBXla receives calls to the central office line trunk of its own PBX as described above (
This is the same as the process in 1).

Since incoming calls to the office line trunk of other PBXs are transferred via the common line, as shown in FIG. 4(a), in step S5, the ``address signal with additional information ” is received in step s6, the “common line incoming call” is recognized in step S7.

In addition, this address signal with additional information has the configuration shown in FIG.
(incoming call confirmation).

Next, the process shown in FIG. 4(b) is performed. First, in step S8, the system mode is determined.

Since the system mode of PBXla is set to "incoming call to own PBX," the P that processes the incoming call and transfers the "address completion signal" shown in FIG. 8 indicating completion of incoming call in step S9
Send to BX.

After that, in step S10, the called party, such as the person handling the relay stand,
By pressing the incoming call button, etc., "response operation" is performed in step Sll.
When this is done, the response signal shown in FIG. 9 is sent out in step S12, and the call state is established in step SL3.

Here, if we assume that the PBXla does not want to respond to a central office line incoming call transfer call from another PBX, first of all, the system mode at this time is other PBX incoming call, so Step S7 shown in FIG. 4(b)
When a call arrives on the common line, the system data determination in step S8 is "incoming call from another PBX", and in step S14, the "incoming call disallowance signal" shown in FIG. 11 newly added according to the present invention is sent, and the call is released in step S15. Processing (“Destination PBX
After performing "save"), the state becomes "common line trunk empty" in step S16.

The sending of the above-mentioned incoming call disallowance signal has the meaning of indicating a refusal to accept subsequent incoming calls in response to the intensive response request, so if the PBXla accepts incoming calls, the PBX that received the intensive response request will accept incoming calls. It is necessary to notify the status of

Therefore, when the incoming call disallowance signal is sent, the PBX that received the intensive response request is saved in the status notification destination PBX data shown in FIG. 4(b).

PBXla is in the above incoming call reception refusal state (system mode -
Detection of the change from the incoming call acceptance state (incoming call from other PBX) to the incoming call acceptance state (incoming call from the system's own PBX) is performed by the system mode monitoring program shown in FIG. and change the system mode in step S1.7b.

Furthermore, if the content of the change changes from an incoming call from another PBX to an incoming call at the local PBX in step 517b, that is, if the state changes from a state where incoming calls are rejected to a state where incoming calls are accepted, the PBX that received the intensive response request is changed to the incoming call at step 517c. The status notification PBX data is extracted and an incoming call acceptance signal shown in FIG. 12 is sent out in step 517d.

PBXlb or system mote receives calls from other PBXs.

As a result, as shown in FIGS. 3(a) and 3(b), when an incoming call from a central office line is recognized in step S3, the system mote is determined in step S4 of FIG. 3(b), and other PBX incoming calls are detected. Based on the other BX transmission order table and other PBX status memory, the destination is extracted in step S18, and an address signal with additional information is transmitted to the destination in step S19.
In step S20, a state is entered in which the intensive response is activated.

Further, as shown in FIG. 3(c), when an address completion signal is received in step S21 during the intensive response activation in step S20, the completion of the incoming call is recognized and the intensive response is executed in step S22, resulting in a state of waiting for a response. Upon reception of the response signal in step S23, a conversation state is established in step S24.

Here, even if the other PBX status memory shown in FIG. 3(b) recognizes that the destination is available for incoming calls and transfers the incoming call to the central office line, as shown in FIG. 3(c), If the incoming call disallowance signal in step S25 is received during the intensive response activation in step S20, when a call is received on the central office line thereafter, other PBXs are in the other PBX state in order to eliminate invalid activation such as activation of the PBX in the incoming call unavailable state. Disables memory from receiving calls.

However, if an incoming call acceptance signal indicating that incoming calls are accepted from this PBX is received, the incoming call acceptance signal reception program shown in FIG. 6 is activated in step S26, and in step S27, PBXn is extracted, In step S28, the incoming call status of this PBX in the other PBX status memory is set to allow incoming calls. As a result, transfer of incoming calls to the central office line for intensive response can be resumed.

The processing of PBXlc is the same as that of upper product PBX1b.

(3) When the PBXIC shown in FIG. 2(d) becomes a centralized response PBX.

PBXla has the same processing as PBXIc in item (2) above.

PBXlb is the same as the processing of PBXlb in item (2) above. However, in the destination extraction in step S18 of FIG. 3(b), PBXla in the other PBX status memory
cannot receive calls, so in step S18 the destination PB
Extract XIC.

PBXIc is soil, and the treatment is the same as that of PBXla in item (2).

(4) When PBXlb in FIG. 2(e) becomes a centralized response PBX.

PBXla has the same processing as PBXlb in item (2) above. The destination will be PBXlb.

PBXlb has the same processing as PBXla in item (2) above.

PBXlc has the same processing as PBXlb in item (2) above. The destination will be PBXlb.

Various forms of concentrated responses have been described above using FIGS. 2(b) to 2(e).

Here, I would like to add one application example, for example, PBXl
a, PBXlc's system mote receives a call from its own PBX, and
If the system mode of BXlb is incoming call from other PBX, PB
As for Xlb, I don't know which PBX I should make a concentrated response to.

However, in this case, as shown in Figure 3(b), the other P
By following the BX incoming call ranking table, the destination P
It is possible to extract BX.

In other words, as shown in Figure 2(f), PBXla and PBXlb
PBXIC performs independent processing, and PBXla performs independent processing as shown in Figure 2 (g).
It also becomes possible to perform centralized responses between PBXlb and PBXIC.

This means that the network can be divided into several blocks and a concentrated response can be achieved for each block.

Next, we will discuss the method for identifying the originating PBX (PBX that transfers incoming calls to central office lines) in the PBX that responds centrally.
A case will be described with reference to the case where PBXla in FIG.

First, an example of the identification method will be explained using a case where the incoming call button is changed.

Figure 13 shows the board diagram of the relay stand. Incoming calls to the central office line trunk of one's own PBX are displayed on the conventional central office line incoming call button, and incoming calls to the central office line trunk of PBXlb or PBXlc are displayed via the common line. If you have received a new PB
An incoming call will be displayed on the Xlb office line incoming call button and the PBXIC office line incoming call.

This is the address signal with additional information rcalliB I+ne (t!
By using ntity J, it is possible to recognize that the type of call is a central office line and the originating PBX, so the incoming call button can be changed based on this information.

Above we have shown the identification method of changing the incoming call button, but it is also possible to change the ringtone and the display when receiving a call.

Above, we have explained the control procedure when manually switching the centralized response, that is, manually inputting the system mode switching.
It is also possible to realize a concentrated response by automatically switching under the condition of an obstacle.

Further, although the present invention has been described using a common signaling network connected by signal lines and speech lines as an example, it is also possible to use a TSDN network.

(Effects of the Invention) As described above, according to the present invention, in a network connected by a common line signaling method in which a plurality of PBXs are connected by a communication line and a signal line, a relay board that receives and receives calls from a central office line within the network. When multiple PBXs accommodating reception boards such as When multiple PBXs are installed, there is no need to fixedly decide on the PBX that will respond centrally, so even if you are unable to receive calls due to an abnormality in this PBX, you can switch the PBX that centrally responds to another PBX. In turn, this has the effect of allowing the continuation of centralized response services.

In addition, if a concentrated response is performed due to an increase or decrease in traffic,
When calls are concentrated on one PBX due to a disaster or the like, incoming calls can be distributed to other locations, which has the effect of helping to distribute risks such as abnormal width.

Furthermore, the destination P of the incoming call in the PBX that responds centrally
Since the BX is identified, the attendant at the relay stand can recognize the source of the incoming PBX of the incoming call on the central office line during centralized response, and can respond not only in a similar way but also in accordance with the incoming PBX.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a private automatic telephone exchange applied to a central response control device according to an embodiment of the present invention, FIG. 2(a) is a system and network configuration diagram showing an embodiment of the present invention, and FIG. Figures (b) to 2 (g) are network configuration diagrams of specific embodiments of the centralized response control device of the present invention, taking as an example the case when a call arrives at each central office line to each PBX, and Figures 3 (a) to 2 (g). Third
FIG. 4(c), FIG. 4(a), and FIG. 4(b) are flowcharts showing the processing procedure of the present invention, and FIGS.
The figures are flowcharts of the control program of the present invention, Figures 7 to 10 are signal formats specified by CCITT, Figures 11 and 12 are signal formats added according to the present invention, and Figure 13 is a signal format of the present invention. FIG. 3 is a panel diagram of a relay stand in the centralized response control device. 1.1a to 1c...Private automatic telephone exchange, 2...Switch, 3...Central control unit, 4...Storage device, 5,
15...Signal line, 6...Common signal line device, 7...Central control system bus, 8...Talking line, 9...Common line trunk, 10a, 10b-, Relay stand, 118-11c ... Office line, 12-14... Call line,
17a-17c: Extension terminals. Yuichi Shunto Niko fnee 8A Tsume 1 9 Junsa 1 Ugo 9 Figure 1
------------''1 Figure 3 (b) Figure 8 7F Shimata Complete 3 Nights ~ No. c ~ Fin rp&s cbmg4@e wo figure q] Figure 9'' - Roussou 1 'Ft '7a 7me, one in V (71
Dimensionffshi l−λ−shi)+CJl &upwv+
mn nm5aqp ll-n s+9M, n60-
+ 1 Figure 10

Claims (1)

[Claims] A plurality of private automatic telephone exchanges that are connected by signal lines that receive signals using a telephone line and a common line signaling system and constitute a network, and a predetermined private automatic telephone exchange among the plurality of private automatic telephone exchanges that receive signals using the telephone line and the common line signaling method. A reception desk that is connected by a common line signaling system consisting of a signal line and a reception desk that receives calls from the central office line, and a reception desk that receives calls from the central office line, and a reception desk that is installed in each private automatic branch exchange when two or more of the above-mentioned private automatic telephone exchanges that accommodate this reception desk are installed. , means for selecting whether each private automatic branch exchange responds incoming calls to the central office line trunk or centrally answers, and identification of the destination private automatic telephone for incoming calls in the private automatic branch exchange that responds centrally; A centralized response control device comprising means for making this possible.