JPH042028B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an incoming call distribution system, particularly in an exchange accommodating terminals, in which incoming calls from a plurality of incoming lines constituting a group are distributed to a plurality of terminals constituting a group. This relates to an incoming call distribution method when connecting.

(Prior Art) Generally, when connecting a telephone to a reception desk such as a seat reservation reception desk on a train or an airplane, a plurality of reception desks having the same function are grouped together, and a plurality of central office lines are connected only to these reception desks. A private branch exchange is used that has an extension representative function that connects incoming calls from this group of office lines only to the group of reception desks.

In this case, the central office line is a plurality of incoming dedicated lines corresponding to the representative number of the subscriber exchange, and the number of lines is determined with the exchange. On the other hand, although there is a maximum number of reception desks for terminals, the number of reception desks that should be operated in a group is determined each time depending on the incoming call traffic at that time. Therefore, when a caller connects to a reception desk, when a vacant dedicated incoming line is selected at the subscriber exchange and the call arrives at the distribution private branch exchange, this private branch exchange connects the reception desks arranged in a predetermined order to the reception desk. He scans the display and selects an empty reception desk. At this time,
By randomly changing the scanning start point of the reception desk's busy display each time, in the long run, a specific reception desk is prevented from receiving calls.

However, according to this method, the order in which the reception desks became vacant is not recorded, so
Even though there are incoming calls to other reception desks, there may be cases where the next call comes in immediately after the previous call ends, even if there is a reception desk that has been idle for some time. There is. Also, if a reception desk is busy and multiple incoming calls are waiting, and then a vacant reception desk becomes available and the call is connected to this vacant reception desk, the central office line selection will be applied to the reception desk. Since it uses the same method as the selection operation, it has the disadvantage that the connection order does not necessarily match the waiting order.

(Objective of the Invention) The object of the present invention is to eliminate the above-mentioned drawbacks, and to record the order of vacant terminals (reception desks) or the order of incoming lines (office lines) waiting for incoming calls.
To provide an incoming call distribution system that allows calls to be received fairly for both terminal acceptors and callers.

(Structure of the Invention) In the incoming call distribution system of the present invention, in an exchange that connects incoming calls from a plurality of incoming lines constituting a group to a plurality of terminals constituting the group, when all the terminals are busy, the incoming call Common number recording means for sequentially recording the incoming line numbers of calls and sequentially recording the terminal numbers of the terminals that become vacant when there are no waiting calls; and a common number recording means that indicates that the incoming line numbers are recorded in this number recording means. a first display means; a second display means indicating that a terminal number is also recorded in the number recording means; and when there is an incoming call and the terminal number is displayed on the second display means, the terminal number is recorded in the number recording means; a first connection requesting means for requesting connection to the terminal of the first number recorded; and an incoming line of the first number recorded in the number recording means when the first display means indicates that the terminal is available and the terminal is available; and a second connection requesting means for requesting a connection.

Further, in the above configuration, it is configured to include identification means for identifying the last number recorded by the number recording means by adding a flag to the last number.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, in which the exchange is an electronic exchange under storage program control. In Figure 1, the station line 11
A to 11l constitute a group, and are dedicated lines for incoming calls from the affiliated telephone office to the representative number of this electronic exchange (subscriber). The office lines 21a to 21m are also office lines used when a call is received or made from the subscriber's representative number or individual number from the affiliated telephone office. Therefore, the central office lines 11a to 11l
are central office line trunks 12a to 12 dedicated for incoming calls, respectively.
1, the central office lines 21a to 21m are connected to central office line trunks 22a to 22m for both incoming and outgoing calls, respectively.
It is connected to a communication path switch 10. On the other hand, each communication path switch 10 includes a line circuit 13.
A group of terminals 14a to 14p via a to 13p
are connected to each other, and furthermore, each line circuit 23a
~23g to another group of terminals 24a~24q
is connected. The central processing unit 20 also connects the office line trunks 12a to 12l, 22a to 22m, the communication path switch 10, and the line circuits 13a to 13.
p and 23a to 23q via buses, respectively, and performs exchange control. Note that a storage device 30 and an input/output device 40 are connected to the central processing unit 20. Furthermore, in addition to the conventionally provided data memory, the storage device 30 is provided with a number recording memory 31, a two-bit office line number record display 32, and a terminal number record display 33.
The incoming call from 11l is configured to include a switching program that connects only to terminals 14a-14p.

FIGS. 2a and 2b show a number recording memory 31, a station line number recording display 32, and a terminal number recording display 3 provided in the storage device 30 of the embodiment of FIG. 1, respectively.
FIG. 3 is a diagram illustrating an example of FIG. The number recording memory 31 stores waiting station line numbers for incoming calls from a group of station lines 11a to 11l, or terminals 14a to 14p.
It consists of a number recording section in which the vacant terminal number of a group is recorded, and a flag section indicating that the record is the most recently recorded.Number records are recorded in order from the bottom, and a flag is set each time a record is made. transferred to the recorded. Furthermore, when the record reaches the top, it has an endless configuration in which the next record is used from the bottom. Note that the first recorded data is read out, and the recorded data is erased after reading. Furthermore, in this number recording memory 31, both the waiting station number and the vacant terminal number are not recorded at the same time, and its recording capacity is generally limited to the number of terminals 14a to 14.
It may be the same as the number of p. If the number of incoming calls from the central office lines 11a to 11l is small and the terminals 14a to 14p are vacant, this terminal number is recorded in the number recording memory 31, and at the same time, the terminal number recording display 33 displays that there is a vacant terminal. Ru. In addition, the terminals 14a to 14
If the number of
When an incoming call from a to 11l cannot be accepted, the number recording memory 31 stores the incoming call from the central office line 11a to 11l.
The waiting number of 1l is recorded, and at the same time, the station line number record display 32 displays that there is a waiting station line.

FIGS. 3a and 3b show, in the embodiments of FIGS. 1 and 2, the switching operations performed when a call is received from the central office lines 11a to 11l and when the terminals 14a to 14p become available, particularly according to the present invention. This is a flowchart focusing on the operation.

First, referring to FIG. 3a, the operation of receiving a call in the embodiment of FIG. 1 will be explained.
When there is an incoming call request from one of the a to 11l 11i, the central processing unit 20 is sent from the office line trunk 12i.
Incoming call information is given to (step). The central processing unit 20 checks whether there is an empty terminal display in the terminal number record display 33 (step). If there is no vacant terminal, the central office line number i is recorded in the number recording memory 31, and the latest record display flag is moved and added to this record (step). Next, the fact that there is a waiting station line is displayed on the station line number record display 32 (step). On the other hand, in the step
If there is a vacant terminal, the first recorded number j is read from the number recording memory 31 and the record of that number is erased (step). Next, it is checked whether there are any numbers still recorded in this number recording memory 31 (step), and if there are no numbers recorded, the terminal number recording display 33 is erased (step). Same as if there was still a record in the next step.
The central processing unit 20 is requested to connect the central office line trunk 12i of the incoming central office line 11i to the line circuit 13j of the terminal j read in step via the communication path switch 10 (step). As a result of the above, the central office line 11i with the incoming call is connected to the terminal 14j, which has been vacant from the beginning.

Next, referring to FIG. 3b, we will explain the operation in the case where the terminal in use during a call in the embodiment of FIG. 1 becomes free.
4i ends the call and the communication path switch 10 is restored, the central processing unit 2 is transferred from the line circuit 13i.
Terminal availability information is given to 0 (step).
The central processing unit 20 checks whether there is a waiting station line display in the station line number record display 32 (step).
Therefore, if there is no waiting station line, number recording memory 3
The terminal number j is recorded in 1, and the latest record display flag is moved and added to this record (step). Next, the terminal number record display 33 displays that there is a vacant terminal (step). On the other hand, if there is a waiting station line, the first recorded number j is read from the number recording memory 31 and the record of that number is erased (step). Next, it is checked whether there are any numbers still recorded in this number storage memory 31 (step), and if there are no numbers recorded, the station line number record display 32 is erased (step).
Next, as in the case where records still remained in the step, the line circuit 13i of the vacant terminal 14i and the office line trunk 12j of the office line j read out in the step are
The CPU 20 requests the central processing unit 20 to connect the network via the communication path switch 10 (step). As a result of the above, the vacant terminal 14i is connected to the central office line 11j that has been waiting from the beginning.

Although the case where the exchange having the extension representative function is an electronic exchange has been described above, this exchange does not necessarily have to be an electronic exchange, and any exchange can be used as long as it is a common control type exchange. For example, it is clear that the present invention can be practiced even if the exchange is a crossbar exchange. Further, although the number recording memory 31, the office line number recording display 32, and the terminal number recording display 33 are assumed to utilize a part of the storage device 30, there is no problem in providing them independently from the storage device 30. Furthermore, although a flag is provided to display the latest record recorded in the number recording memory 31, there is no problem in giving an address to the recording position and always storing the address of the latest record separately.

(Effects of the Invention) As explained in detail above, the present invention is capable of connecting incoming lines constituting a group and reception desks constituting a group, in which incoming calls for waiting are connected in the order of waiting as soon as the reception desk becomes available. As soon as an incoming call arrives, the receiving desks are connected to the receiving desks that were free from the beginning, and the effect is that the callers and the receiving desks are connected in an extremely fair order.

Note that even if there is a corresponding incoming line group and a reception desk group in one exchange, call processing can be performed independently by separately providing a number recording memory and a station line and terminal number recording display corresponding to these groups. It is clear that distribution control is possible.

Furthermore, in the embodiment of the present invention, the incoming lines constituting a group are the office lines corresponding to one representative number, but there is no problem in the least if the incoming lines corresponding to each of a plurality of representative numbers are grouped together and used as a group of incoming lines. Needless to say, there is no such thing.

[Brief explanation of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG.
Figure a is a diagram for explaining an example of the number recording memory in the embodiment of Figure 1, Figure 2b is a diagram for explaining an example of the station line and terminal number recording display in the embodiment of Figure 1, and Figure 3 is a diagram for explaining an example of the number recording memory of the embodiment of Figure 1.
Figures a and b are flowcharts for the embodiment of Figure 1 when an incoming call is connected and when the reception desk becomes vacant, respectively. 11a-11l, 21a-21m... central line, 1
2a to 12l, 22a to 22m... Office line trunk, 13a to 13p, 23a to 23q... Line circuit, 14a to 14p, 24a to 24q... Terminal (reception desk), 10... Call path switch, 20... Central processing unit, 30... Storage device, 31... Number recording memory, 32... Office line number recording display, 33...
Terminal number record display, 40...Input/output device.

Claims (1)

[Claims] 1. Incoming calls from multiple incoming lines constituting a group,
In an exchange connected to a plurality of terminals constituting a group, when all the terminals are busy, the incoming line numbers of the incoming calls are sequentially recorded, and when there are no waiting calls, the terminal numbers of the vacant terminals are sequentially recorded. a common number recording means, a first display means indicating that the incoming line number is recorded in this number recording means, and a second display means similarly indicating that the terminal number is recorded on this number recording means. means, first connection request means for requesting connection to the terminal with the first number recorded in the number recording means when there is an incoming call and displayed on the second display means; and a second connection requesting means for requesting connection to an incoming line having the first number recorded in the number recording means when the display means displays the incoming call distribution method. 2. The incoming call distribution system according to claim 1, further comprising identification means for identifying the last number recorded by the number recording means by adding a flag to the last number.