KR100242411B1 - Method of internal number registration by internal branch service in pabx - Google Patents

Abstract

The present invention relates to a method of performing a branch service for an extension in a private exchange, and more particularly, to providing an extension number registration method in an extension branch service that enables an extension branch service without being limited to the number of branches that can be branched. will be. In the present invention, when a user designates one of the preset branch groups, and inputs an extension number to request extension registration, the branch chain is searched by branch group number for the branch chain and the branch chain to which an item field is assigned one by one extension number. Registering the input extension number in the designated branch group by a linked list comprising branch linkers each having an index field assigned thereto, and the extension number registered in the branch group number table in which one branch group number field is assigned for each extension number. It is characterized in that the step of assisting registration to refer to the number when checking whether the registration and when searching for other stations registered in the same branch group as the extension.

Description

How to register extension number according to extension branch service of private exchange system {METHOD OF INTERNAL NUMBER REGISTRATION BY INTERNAL BRANCH SERVICE IN PABX}

The present invention relates to a method of performing a branch service for an extension in a private exchange, and more particularly, to providing an extension number registration method in an extension branch service that enables an extension branch service without being limited to the number of branches that can be branched. will be.

Typically, private exchanges such as keyphone systems provide extension branch services. A user who wishes to receive the extension branch service designates one or two different extensions as branch pairs for one extension. Then, when a call is made to any one of the phones designated as the branch pair, the call can be answered by the other phone not being called. For example, in a small office, such as a corporate boardroom, if you set up a desk phone and a sofa phone as one branch pair, when you receive a call on your desk phone, you ″ hook off ″ the phone. That is, the receiver can answer by answering the receiver. This makes it convenient for the phones designated as the branch pairs to answer the incoming call from either phone.

However, the extension branch service that had been provided by private exchanges had a limited number of extensions that could be designated as branch pairs, such as 1: 1 or 1: 2. As such, only a small number of stations could be designated as branch pairs. In other words, in a small office with only one or two employees, such as a boardroom, it was possible to use it without any inconvenience because there weren't many telephones.However, dozens of people worked, such as a larger office where a large number of telephones were used. Esau was not very useful.

As described above, the conventional extension branch service in the private exchange has a disadvantage in that the use range is limited by designating only a limited number of extensions as branch pairs.

Accordingly, an object of the present invention is to provide an extension number registration method according to an extension branch service for enabling an extension branch service without being limited to the number of branches that can be branched.

1 is a block diagram of a conventional key phone system;

2 is a memory map diagram for an extension branch service according to an embodiment of the present invention;

Figure 3 is a branch group registration / search / release processing flow chart according to an embodiment of the present invention,

4 is an extension branch performance flowchart according to an embodiment of the present invention.

According to the present invention for achieving the above object, when a user requests extension registration by inputting an extension number by designating one of the preset branch groups, the branch chain and the branch chain to which an item field is assigned for each extension number are assigned. Registering the input extension number in the designated branch group by a link list consisting of a branch linker in which an index field for searching is allocated one by one branch group number, and a branch group in which one branch group number field is assigned for each extension number. And registering the extension number registered in the number table when checking whether the registered extension number is registered and searching for other extensions registered in the same branch group as the corresponding extension.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the annexed drawings, numerous specific details are set forth in order to provide a more thorough understanding of the present invention, such as specific processing flows or memory maps. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

Figure 1 shows a block diagram of a conventional key phone system to which the present invention is applied. In FIG. 1, the central processing unit 100 controls call switching and controls each part of the key phone system to provide various services to the user. The memory unit 102 includes a ROM and a RAM, stores programs and initial service data of the central processing unit 100 to perform call processing and various functions, and temporarily stores processing data of the central processing unit 100. do. The switching circuit 104 switches various tones and voice data under the control of the central processing unit 100. The trunk line circuit 106 forms a trunk line call loop by calibrating the trunk line under the control of the central processing unit 100 and interfaces a signal between the trunk line and the switching circuit 104. The general subscriber circuit 108 supplies a call current to a general telephone (not shown) of a subscriber station under the control of the central processing unit 100 and simultaneously interfaces signals between the general telephone and the switching circuit 104. In addition, the general subscriber circuit 108 includes a ring generator for generating a ring signal and supplies the ring signal to the general telephone under the control of the central processing unit 100. The key phone subscriber circuit 110 transmits and receives various types of data with the key subscriber telephone (not shown) of the subscribers under the control of the central processing unit 100, selectively connects the station and the trunk line to the key telephone telephone, and supplies the power of the key telephone telephone. And interfaces the signal between the key phone and the switching circuit 104. The tone supplier 112 generates various tone signals under the control of the central processing unit 100 and outputs them to the switching circuit 104. The dual tone multi frequency (DTMF) transmitter 114 generates a multi frequency code (MFC) signal under the control of the CPU 100 and applies it to the switching circuit 104. The DTMF receiver 116 is connected to the switching circuit 104 and decodes and applies the MFC signal generated from the subscriber's telephone of the station to the central processing unit 100.

In the private exchange such as the above key phone system, the present invention enables to designate a different extension branch group for each office or required subgroup, and does not limit the number of extensions belonging to each branch group without limiting the maximum number of the corresponding private exchange. Allows you to specify line capacity. In this way, not only small offices such as boardrooms, but also offices with a lifetime or dozens of people, can pick up other telephones that are nearby and pick up the phone's handset.

To this end, as shown in FIG. 2, which shows a memory map for an extension branch service according to an exemplary embodiment of the present invention, a linked list including a branch linker 200 and a branch chain 202 is provided. ) Is configured in the memory unit 102 of FIG. 1, and the branch group number table 204 is configured in the memory unit 102. The branch linker 200 is configured by allocating an index field for each branch group number sequentially assigned to each of a plurality of preset branch groups. The index field stores index information for searching for branches registered in the branch group in the branch chain 202. The index information is the first link information, that is, the extension number of the connection list for the stations registered in the branch group. The branch chain 202 is configured by assigning one item field for each extension number. The entry field stores the linked extension number next to the linked list. The branch group number table 204 is configured by allocating one branch group number field for storing the branch group number to which the corresponding station is registered for each extension number. This branch group number table 204 is referenced when checking whether a branch group is registered for a specific extension and when checking other stations registered in the same branch group as the extension.

In FIG. 2, the branch linker 200 shows an example of setting up to n branch groups, and the branch chain 202 and the branch group number table 204 show an example of m extensions of the key phone system. 2 also shows an example in which extension j and extension m-2 are registered in branch group i. In the branch linker 200, 0FFH indicates that there is no extension registered in the corresponding branch group, 0FFH in the branch chain 202 indicates that the corresponding item is the last, and 0FFH in the branch group number table 204 indicates which extension number is used. It is not registered in the branch group.

3 is a flowchart illustrating a branch group registration / search / release process according to an embodiment of the present invention for allowing a user to designate one of the branch groups and input an extension number so as to request extension registration or search or release. will be. The function according to the flowchart of FIG. 3 is programmed in the memory unit 102 to be performed by the CPU 100 of FIG. 1.

A branch group registration / search / release operation according to an embodiment of the present invention will now be described in detail with reference to FIGS. 1 to 3. First, when a user wants to register, search or release a desired extension in a desired branch group in order to receive an extension branch service according to the present invention, the user is connected to a general telephone or key phone subscriber circuit 110 connected to the general subscriber circuit 108 of FIG. You will be asked to specify a branch group using your key phone. In the following description, the use of a key phone is exemplified. In this case, for example, a separate key may be provided in the key phone or a branch group designation may be required by a combination of existing keys.

As described above, when the user requests the branch group designation, the CPU 100 initializes the branch group number i and the item number j to 0 in step 302 in response to this in step 300 of FIG. Initialize K to 0FFH. Branch group number i and item number j are used to search for extensions registered in the branch group. The branch group number i represents the branch group number in the branch linker 200 of FIG. 2, and the item number j represents the extension number in the branch chain 202. Register K is used to temporarily store the extension number entered by the user.

Thereafter, the central processing unit 100 waits for a key input by a user in steps 304 and 318. At this time, the user searches for the desired branch group among the branch groups as shown in the branch linker 200 of FIG. 2 using the next group search key and the previous group search key, and uses the next link search key and the previous link search key. Search for a link as shown in branch chain 202 of FIG. If you want to delete the link of the branch group searched as described above, enter the delete key, and if you want to register a new extension in the searched branch group, enter the extension number and registration key. And if you want to finish registering, searching, and canceling the branch group, enter the exit key. Here, the above-mentioned keys can be used by using the keys provided in the key phone. For example, the next group search key is used for the volume up key, the previous group search key is used for the volume down key, and the next link search key is The redirection key can be used as the redirection key, and the registration key and end key can be used as it is. As such, data according to a key input by the user is applied to the CPU 100 through the key phone subscriber circuit 110.

If the user inputs the next group search key, the CPU 100 increases branch group number i by 1 in step 328 in response to steps 304 through 318, and returns the previous group search key. In step 330, the branch group number i is decreased by 1, and if the next link search key is inputted, the item number j is increased by 1, and if the previous link search key is inputted, the item number j is decreased by 1, and then the above is made (304). Repeat step) to step 318. At this time, the branch group number and the extension number indicated by the branch group number i and the item number j are transmitted to the user's key phone telephone through the key phone subscriber circuit 110 and displayed.

When the user inputs a delete key to delete the extension of the branch group searched as described above, the central processing unit 100 is linked to the branch group number i in step 336 in response to this in steps 304 and 318. After the item number j is deleted and 0FFH is stored in the register K in step 338, steps 304 to 318 are performed again.

In addition, if you want to register a new extension to the branch group found as described above, enter the extension number and registration key. If the extension number is input, the central processing unit 100 stores the extension number input in step 320 in the register K in response to the steps 304 through 318, and then the steps 304 through 318. Perform the step again. When the registration key is input, the central processing unit 100 checks the value of the register K in step 322 in response to this in steps 304 and 318. If the value of the register K is 0FFH, since the extension number is not input, the central processing unit 100 ignores the registration key and performs steps 304 to 318 again. In contrast, if the value of the register K is not 0FFH, the CPU 100 performs step 324. In step 324, the central processing unit 100 deletes the extension number stored in the register K if it is registered in another branch group, and registers the extension number stored in the register K in the branch group i in step 326. After that, the above steps (304) to (318) are performed again. At this time, in step 326, the branch group number table 204 of FIG. 2 is also registered, by registering the branch group number stored in the branch group number field of the newly registered extension number.

Finally, when the user inputs the end key, the central processing unit 100 terminates in response to the above steps (304) to (318).

Therefore, by allocating memory and configuring a linked list to designate a plurality of branch groups, a user can designate one of a plurality of branch groups to register as many stations as desired and search or delete them.

4 illustrates a flowchart according to an embodiment of the present invention for performing an extension branch service for an extension registered in a branch group as described above. The function according to the flowchart of FIG. 4 is programmed in the memory unit 102 to be performed by the CPU 100 of FIG. 1.

Now, the extension branch service operation according to an embodiment of the present invention will be described in detail with reference to FIGS. 1, 2, and 4. First, in step 400 of FIG. 4, the CPU 100 performs step 402 when there is an extension that is `` hooked off '' among stations connected to the key phone subscriber circuit 110. In step 402, the central processing unit 100 checks whether the corresponding extension is registered in one of the branch groups using the branch group number table 204 of FIG. At this time, if the ″ hook off ″ extension is registered in one of the branch groups, the central processing unit 100 assigns another extension registered in the same branch group in step 404 to the branch linker 200 and the branch chain (see FIG. 2). In step 202, it is checked through the trunk line circuit 106 and the key phone subscriber circuit 110 whether there is an extension line that is receiving a call from a trunk line or another station. If there is an extension to which the call arrives, the central processing unit 100 controls the switching circuit 104 in step 406 to connect the incoming call to the extension that ″ hooked off ″.

Therefore, it is possible to register to a branch group without limiting the number of branches that can be branched, to selectively designate a branch group, and to provide branch services to all extensions registered to each branch group.

If the extension ″ hooked off ″ in step 402 is not registered in the branch group or another extension registered in the same branch group as the extension in step 404, the central processing unit ( In step 410 to 412, the control circuit 100 controls the switching circuit 104 in the same manner as usual to connect the tone of the tone supplier 112 to the corresponding station and provide a call service.

Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. In particular, the embodiment of the present invention shows an example of registering extensions in different branch groups, but if necessary, all extensions of a private exchange may be registered and used in one branch group. Therefore, the scope of the invention should not be defined by the described embodiments, but should be defined by the equivalents of the claims and the claims.

As described above, the present invention can extend a range of applications because the extension branch service can be performed without being limited to the number of branches that can be branched to each other, thereby increasing the efficiency of the work.

Claims (1)

When you ″ hook off ″ an extension of any of the registered stations, confirm whether the extension is registered with the branch group, and then sequentially check other stations registered in the same branch group through the confirmation result, and the extension to which the call is In the extension number registration method of the private branch extension branch service to connect the incoming call to the extension of the ″ hook off ″, if any, When a user requests extension registration by inputting an extension number by designating one of the preset branch groups, a branch chain in which an item field is assigned one by one extension number and an index field for searching by branch group number for the branch chain are provided. Registering the input extension number in the designated branch group by a connection list consisting of branch linkers allocated one by one; Subsidiary registration to refer to the extension number registered in the branch group number table assigned with one branch group number field for each extension number when checking whether the registered number is registered and when searching for other extensions registered in the same branch group as the corresponding extension number. Extension number registration method characterized in that the process consisting of.

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