KR910000849B1 - Collective pbx service method - Google Patents

Abstract

The method is for installing one private branch exchange (PBX) at a local area in where small groups requiring each PBX are there so that the exchange services of the small groups are covered by only one PBX. The method comprises a first step for checking the call request from the subscriber, a second step for discriminating whether the call request is for group phone service using the data base of the exchange system, and a third step for executing the group service or exchange service according to the discriminated result.

Description

Service method of private exchange in group premises

1 is a flow chart of a conventional private exchange service.

2 is a private exchange system applied to the present invention.

3A-3C are flow diagrams of a collective telephone exchange process in accordance with the present invention.

4A-4B are flow charts for a group phone service in accordance with the present invention.

5a to 5b are diagrams illustrating a resource sharing determination table according to the present invention.

6 is a diagram illustrating a group subscriber group number table according to the present invention.

* Explanation of symbols for main parts of the drawings

1, 4: 1st, 2nd exchange central controller 2, 3: 1st, 2nd memory

5: Bus ABTR 6, 8, 9: 1st ~ 3rd party supervisory control device

10: trunk subscriber circuit 12, 13: extension subscriber circuit

11: tone generator 14: call exchange circuit

15, 16: subscriber terminals by group

The present invention relates to an exchange service method in an on-premises private exchange system. In particular, a small private group is accommodated in a single private exchange system so that each group uses a single private exchange without having to install a separate private exchange. It is about the service method of a group private exchange, such that each group uses a separate private private exchange.

Conventional private exchanges were to be used only by one group (company) in the same area (building), but when several companies in the building are accommodated at the same time, it was regarded as a group without distinction of the company and provided an exchange service. In other words, if several groups were accommodated in the same building, they could be used together as one private exchange but not as separate exchanges.

Specifically, referring to the flow chart of the conventional exchange service method of FIG. 1 and the private exchange system diagram of FIG. 2, the first-subscriber detection control for calls entered into the station or trunk line subscriber circuits 10, 12, and 13 is shown. First and second switch central controllers 1 and 4, which perform the processing of the call request information transmitted from the devices 6, 8, and 9 and switch control, and the first and second switch central controllers 14 A bus for providing a system bus to the first and second memories (2) and (3), in which subscriber information is stored, and the central controller in operation among the first and second switch central controllers (1) and (4). Subscribers of the ABTR 5, the CO line subscriber circuit 10 accommodating trunk line subscribers, the station subscriber circuits 12 and 13 accommodating the station subscribers, and the subscriber lines of the CO line and extension subscriber circuits 10, 12, 13; Scans the status of various subscriber information (hook-on, hook-off, etc.), and the digits dialed by the subscriber. The first-subscriber monitoring to transmit identification information to the first and second switch central controllers 1 and 4 and to process the subscriber information transmitted from the first and second central controllers 1 and 4; Control devices 6, 8, and 9, a tone generator 11 informing the subscriber of the current subscriber's status in tones, and a bus drive circuit 7 driving the tone generator 11; It consists of a call exchange circuit (14) that provides all the call paths by call request, (15) (16) refers to the terminal of the station and the CO line subscriber accommodated.

Accordingly, as shown in the conventional exchange service flow diagram of FIG. 1, in the process of (a), the first and second switch central control apparatuses check the status of each subscriber in the first to third subscriber monitoring devices 6, 8, and 9. Inform subscriber status information to (1, 4). Since the first and second switch central controllers 1 and 4 do not have a resource sharing determination table, the call request is determined by determining whether or not a call request has occurred in step (b). (C), the first to second subscriber switching control device (6, 8, 9), tone by the first and second switch central controller (1, 4) The generator 11 and the call exchange circuit 14 are controlled to provide corresponding services.

Therefore, if a call request occurs, the call service for this subscriber can be provided regardless of the group, so that the subscribers of other groups have no restrictions on the resources (co-op, extension, or trunk) that are allocated to various groups in one private exchange. You can be penalized by using it without it.

Therefore, an object of the present invention is that if there are multiple groups in the same zone, each group does not install individual private private exchanges, but accepts these groups together using one private private exchange, and each group uses individual private private exchanges. It is to provide a way to perform the same function.

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

3 is a flow chart of a group telephone exchange process according to the present invention, wherein (a) is a main flow chart that monitors subscriber status to check whether a call request has occurred, and exchange system data when a call request occurs in the first step. And a third step of bringing the base data to check whether the group phone service system is present, and a third step of performing the group phone service system temporarily and temporarily switching service in the second step.

Figure 3b is a detailed flow chart of the process of (a) of (2a) to take the recipient subscriber data to check all subscribers, and to check the hook on / off if the checking is completed before all of the subscribers in this step is completed And transmitting the subscriber information to the switch central controller when it is hooked off in the above step.

FIG. 3C is a detailed flowchart of the exchange service performing process of step (2f) of FIG. 3A, which checks whether a call is connected by dialing and performs the exchange service.

FIG. 4a is a detailed flow chart of group telephone service performance in the process of FIG. 3 (2e) according to the present invention. In FIG. 4a, the first process of analyzing the digits dialed by the subscriber and checking whether the service is requested in the same group is performed. A second step of performing exchange service in the same group at the time of service request and checking whether resource sharing is possible between groups by bringing resource sharing table data between groups when the service request is not made; It consists of a third process of performing an exchange service and notifying the exchange service unavailable status when it is not sharable.

FIG. 4B is a detailed flowchart of the process (3a) of FIG. 4A. It checks whether an internal call is requested according to dialing, and performs a corresponding service.

FIG. 5A is an exemplary diagram of a resource sharing determination table according to the present invention. FIG. 5B is a memory diagram of a resource sharing table. The vertical axis group of the resource sharing table of FIG. 5A is composed of 8 bytes of memory for each group. Again eight horizontal axis groups are accommodated. That is, a value (0 or 1) for judgment is recorded in units of bits.

In this method, the group number of the calling party and the group number of the called party are found in the subscriber group number table of the first and second switch centers 1 and 4, and the calling party's group number is "1". If the group number of 5 is 5, the a part of the value of the bus in which the vertical axis number 1 and the horizontal axis number 5 are identical is determined.

The above table is stored in the first and second memories 2 and 3, and represents a resource sharing determination table when there are 64 subscriber groups. The numbers on the horizontal axis and the vertical axis refer to the group number, and when the subscriber requests another group call, that is, when the subscriber of group 1 requests call connection with the subscriber of group 2, the group 2 on the horizontal axis and the group 1 on the vertical axis are met. The value of (41) is read by the first and second switch central controllers 1 and 4 from the first and second memories 2 and 3 to determine whether or not a call is connected between other groups.

If the value of (41) is " 1 ", call connection between other groups is impossible, and if " 0 "

The group on the horizontal axis of the resource sharing determination table means the group on the called party side, and the group on the vertical axis means the group on the calling party side.

FIG. 6 is an exemplary view of a subscriber group number table according to the present invention, which is stored in the first and second memories 2 and 3 and shows a table when a subscriber is a maximum of 4000 (1000H) subscribers. That is, the subscriber group number table of FIG. 6 is recorded in the first and second memories 2 and 3, and the first and second switch central controllers 1 and 4 read it to determine the group number of each subscriber. The size of the table exists as many as the number of subscribers accommodated in the premises private exchange and has one byte for each subscriber. The use of this table is that if the port number of the call requesting subscriber of group 1 is "0" and the port number of the calling subscriber requested by the subscriber is 1, each group number is 1, in this case, the same group It is determined as an exchange service, and if it is different, it is determined as an exchange service between other groups, and the group number is used as a group number when using the resource sharing decision table.

Therefore, a specific embodiment of the present invention will be described in detail with reference to FIGS. 2-6, the method of the present invention will be described with reference to FIG. 2 as a method of operation in the system of FIG.

In the process (2a), the first-subscriber supervisory control devices 6, 8, and 9 check the status of each subscriber and inform the first and second switch central control devices 1, 4 of the subscriber status information. At this time, in the process (2b), the information on the subscriber status generated in the process (2a) is determined by the first and second switch central controllers 1 and 4 to determine whether a call request has occurred, and when there is a call request, the first and second switch. The central controllers 1 and 4 continue the process (2c). In step (2c), the resource sharing determination table of FIG. 5 and the subscriber of FIG. 6 are used to determine whether the first and second switch central controllers 1 and 4 determine the collective telephone service from the first and second memories 2 and 3. Take the data from the group number table and perform step (2d). In step (2d), the first and second switch central controllers 1 and 4 determine whether the call is a group telephone service system for the call request. (1, 4) performs the exchange service in the process (2f) by using the 1-3 subscriber monitoring control device (6, 8, 9), the tone generator 11, and the pass exchange circuit (14), and ( In the case of the group telephone service system in step 2d), according to the values of the first and second memories 2 and 3 for using the resource sharing table of FIGS. 5a and b for providing the apparatus and the group telephone service in step 2e. Perform the group telephone exchange service process.

FIG. 3B is a subroutine of the process (2a) of FIG. 3A, and the subscriber state monitoring is performed by the subscriber subscriber monitoring devices 6, 8, and 9 to check the hook-off state of the subscriber before being received by the subscriber. Monitoring (S1, S2, S3 process), if the subscriber hooks off in the process (S3) and transmits the subscriber's information to the first and second switch central controller (1, 4) in the process (S4). .

FIG. 3C is a subroutine of the process (2f) of FIG. 3A, in which the first and second switch central controllers 1 and 4 have been transmitted from the 1-3 subscriber monitoring controllers 6, 8, and 9; The service is performed by analyzing the dialing digits of the subscriber and determining whether the call is accessible.

That is, when the call request is detected by the 1-3 subscriber monitoring controllers 6, 8, and 9 that examine the subscriber status, and the call request is received, the first and second switch central controllers 1 and 4 are notified. Then, the first and second switch central controllers 1 and 4 bring the data of data buses such as the fifth and sixth degrees recorded in the first and second memories 2 and 3 to provide exchange service functions. .

The process of (2e) of FIG. 3a will be described in detail with reference to FIG. 4a. In (3a) and (3b), the subscriber subscriber monitoring device 6, 8, 9 of the subscriber who made the call request Call Request The subscriber recognizes the dialed digit and transmits it to the first and second switch central controllers 1 and 4, and the first and second switch central controllers 1 and 4 analyze the digit to determine the call request. The subscriber's collective number requested by the subscriber with the subscriber's collective number is taken from the subscriber's collective number table recorded in the first and second memories (2, 3). Judging, the first and second switch central controllers 1 and 4 use the first and third subscriber monitoring controllers 6, 8 and 9, the tone generator 11, and the call exchange circuit 14 (3d). Perform exchange services within the same group of courses. If the group numbers are different from each other, it is determined that they are not requests for service in the same group. The resource sharing table is taken to determine whether the resource is shared among groups in step (3e). When the resource sharing between groups is impossible as a result of the determination, the first and second switch central controllers 1 and 4 use the tone generator 11 and the call exchange circuit 14 to call that exchange service is not possible in the process (3f). Notify the requesting subscriber, and if the sharing of resources between groups is possible, the first to third subscriber monitoring devices 6, 8, and 9, the tone generator 11, the call exchange circuit 14, and the subscriber terminals 15 and 16 for each group. In the process of (3g), exchange service between other groups is performed.

Referring to the process (3a) of FIG. 4a in FIG. 4b, this process is performed by the first and second switch central controllers 1 and 4 from the 1-3 subscriber monitoring controllers 6, 8, and 9; Perform the service by analyzing the transmitted digits.

That is, in order to provide the group telephone service, the digits dialed by the subscribers of the group 1 (here, the two groups are referred to as the group 1 and the group 2) from the first to third subscriber monitoring devices 6, 8, and 9 are used. 2 It is sent to the central control unit (1, 4) of the exchange. The first and second switch central controllers 1 and 4 analyze the digits dialed by the subscribers of the group 1 and determine whether the call requested by the subscribers currently requires the exchange service in the same group. In this case, the judgment is that the first and second switch central controllers 1 and 4 bring the subscriber tables from the first and second memories 2 and 3 so that the call subscribers requested by the group 1 subscriber and the group 1 subscriber can retrieve the group number. Find. Compared to the found group number, if the number is the same, the exchange service in the same group is performed, and if different, the exchange service request between the different groups is determined. In this case, when the exchange service in the same group is requested, the exchange service for resources in the same group (c. Trunk, subscriber, transit station) is provided. However, if the exchange service request in the same group is not required, the first and second switch central controllers 1 and 4 check the database for recording the exchange service requests between groups to confirm whether the exchange service is possible between different groups. Bring from the memory (2, 3) to determine the service.

In other words, if it is determined that group 1 can share resources with group 2, it enables the group 1 subscribers to exchange services with the group 2 resources (COD, subscribers, and relay stations). However, if group 1 is unable to share resources with group 2, it tells subscribers of group 1 that it is not available in tone generator 14 of the exchange that exchange services are not available to group 1 call requesting subscribers.

Here, the determination of free sharing between groups is made by the first and second switch central controllers 1 and 4 reading the contents of the resource sharing determination table of FIGS. 5a and b.

5 is a database configured to allow the first and second switch central controllers 1 and 4 to determine resource sharing between groups, and is located in the first and second memories 2 and 3 of the switching system.

Therefore, the resource sharing decision table between groups is composed of a bitmap between groups, and whether to share resources with group 1 and group 2 is determined by using group numbers of group 1 and group 2 subscribers determined in the process of FIG. 4 (3b). If the bit of the horizontal group 2 part corresponding to the vertical group 1 part is set to 1, the group 1 cannot share the resource of the group 2.

By using the bitmap as described above, the first and second switch central controllers 1 and 4 determine whether resources are shared between groups.

As described above, the group telephone premises private exchange reduces the individual exchange installation place and installation cost by allowing a single exchange system to be shared and used without installing the premises exchange required for each group when several groups exist in the same conventional area. In addition, there is an advantage that can easily use the group when a new group occurs because it is easy to expand the group.

Claims (2)

In the service method of the premises private switching system, the first step (2a, 2b) of monitoring the subscriber status to check whether there is a call request, and the call request of (2b) in the first step (2a, 2b) In the second step (2c, 2d) of bringing the data of the switching system database and checking whether it is the group phone service system, and the group phone service system temporary group phone service in (2d) of the second step (2c, 2d). And a third step (2e, 2f) to perform an exchange service if not performed. The first process (3a, 3b) according to claim 1, wherein the third-party group telephone service process analyzes the digits dialed by the subscriber, determines the group number of the subscriber group number table, and checks whether a service request in the same group is required. And a second process of performing the exchange service in the same group when the service request of (3b) is performed in the first process (3a, 3b) and bringing the resource sharing table between groups when the service request is not found. (3c, 3d, 3e) and the third process of performing exchange service between other groups when the group sharing of (3e) is possible in the second process (3c, 3d, 3e) and notifying the exchange service unavailable when not possible And (3f, 3g).

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