KR100565836B1 - Method of controlling keyphone system with imagination station - Google Patents

Abstract

The present invention relates to a control method of a key phone system having a virtual station, the conventional key phone system is not easy to configure and expand the network, there is a problem that a separate LED server for centrally controlling the LED of each key phone system. In addition, there is a problem in that the signal processing procedure is complicated because the extension connection between the key phone systems has to go through the standard signaling procedure through the trunk line between actual stations belonging to each system.

Accordingly, the present invention allows the central processor (central MPB) to register the central device (local MPB) of each keyphone system to manage the connection between each other, thereby facilitating network configuration as well as improving the scalability of the line and according to the call occurrence. It provides a key phone system with a virtual station that not only simplifies the signaling procedure but also facilitates the addition of additional functions by directly transmitting a call command to the station of the local MPB of the actual counterpart using a virtual station, which is a dynamically generated software. .

Description

Control method of key phone system with virtual station {METHOD OF CONTROLLING KEYPHONE SYSTEM WITH IMAGINATION STATION}

1 is a network configuration diagram between a conventional key phone system,

2 is a signal diagram between a conventional key phone system,

3 is a network diagram of a key phone system having a virtual station according to the present invention;

4 is a signal diagram of a key phone system having a virtual station according to an embodiment of the present invention;

5 is a signal diagram of a key phone system having a virtual station according to another embodiment of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

 1: Central MPB 3: Central Database

10, 20, 30: Local MPB

12, 22, 32: local database

14, 24: virtual station

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyphone system, and more particularly, to a method for controlling a keyphone system having a virtual station that facilitates connection between a keyphone system, which is a local network, improves network scalability, and adds additional functions.

In the key phone system, the main unit has a private switching function, which relays between several trunk lines and a plurality of extension telephones so that each extension telephone can be selectively connected to a plurality of trunk lines.

The claimed value of the key phone system controls calls between extension telephones so that calls and communication can be made between extension telephones within the same extension zone without passing through the trunk line. In case of requesting access to a specific trunk line through an extension telephone, a call signal is transmitted to the other party using a suitable empty trunk line, and communication is possible by connecting with a corresponding terminal when a connection request call for an extension subscriber is received from an external trunk line. Perform the function to make it work.

On the other hand, since there is a limit range controlled by each key phone system between the key phone system and the key phone system, in order to make calls between extension telephones belonging to different extension zones, the call lines must be connected to each other using a trunk line. 1 is a network configuration diagram between a conventional key phone system.

FIG. 1 is a diagram illustrating a networking relationship between systems in a conventional key phone system, wherein each key phone system has a few main lines and a plurality of stations and controls a local MPB (Main Processor Board) for controlling call signals of extension telephones connected to the station. (100, 200, 300). In the database 110, 210, and 310 of each of the key phone systems, information of other key phone systems is registered for mutual connection.

That is, as shown in the figure, each key phone system has a database (110, 210, 310) for storing information of the other key phone system that can be connected, the user directly inputs the information of the other system to each key phone system to register This allows a network between key phone systems to be configured. Therefore, calls between stations connected to each of the local MPBs 100, 200 and 300 may be called without intercommunication, but connections between stations connected to different local MPBs 100, 200 and 300 should be connected through a trunk line.

That is, in order to make the extension 1 of the first local MPB 100 call the extension 2 of the second local MPB 200, the call signal must be transmitted to the station of the actual counterpart system. Requires signaling procedure. Therefore, each local MPB (100, 200, 300) must exchange the necessary information according to the standard protocol between the trunk lines and the standard signaling procedure for the voice call should be made according to the information.

2 is a signal diagram schematically showing a signal processing process between such a conventional key phone system. As shown in FIG. 2, when an event occurs in the extension of the first local MPB 100 side, the second local MPB 200 in which the station of the first local MPB 100 side and the receiving side exist. The sides occupy mutual trunk lines and information is exchanged according to the standard protocol (P10), and when both sides are switched to a call state, a telephone call is made according to the standard voice protocol (RTP / RTCP) (P12).

As described above, in order to configure a network between the key phone systems in the conventional key phone system, first, there is an inconvenience in that a user inputs information for network configuration into each key phone system to form a network. In addition, since each keyphone system is connected in parallel with all the information of the other keyphone systems connected by a network in parallel, it is necessary to centrally control the LEDs of each keyphone system in order to control the LED operation according to the connection between the respective keyphone systems. There is a problem that the LED server 500 must be set aside.

In addition, even if the network is formed by the key phone system, the signal processing procedure becomes complicated because the calling station has to go through the standard signaling procedure through the trunk line in order to be connected to the extension of the other key phone system. There is a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides a method for controlling a keyphone system having a virtual station that facilitates connection between keyphone systems, which are local networks, improves network scalability, and adds additional functions. The purpose is to provide.

A control method of a key phone system having a virtual station according to the present invention for achieving the above object comprises the steps of: storing information of a plurality of local MPB in a central MPB; Requesting, by the calling local MPB, information of a receiving local MPB through the central MPB; Requesting information from the central MPB to the receiving local MPB based on the previously stored information; The receiving local MPB providing information for the network connection requested by the central MPB and activating a virtual receiving station which exists in software; Providing, by the central MPB, information for the network connection of the receiving local MPB to the calling local MPB; Activating, by the originating local MPB, a virtual originating station that exists in software based on the information for the network connection from the central MPB; Each virtual station transferring a command call directly to an extension connected to a counterpart local MPB to occupy an extension line; And performing a voice call between stations connected to each local MPB through the occupied extension line.

The storing of the information of the plurality of local MPBs in the central MPB may include: registering and storing information for accessing the local MPBs according to a request of the local MPBs; Assigning, by the central MPB, a station numbering plan of each local MPB in which the registration is completed, to each local MPB; Each of the local MPBs may store the station numbering plan allocated from the central MPB, and may further include reconfiguring a station numbering plan of its own station to configure a network.

The occupying of the extension line may include: requesting, by the calling local MPB, the extension occupying the calling virtual station; Directing, by the originating virtual station, a command call to the corresponding station of the receiving local MPB according to the extension occupancy request; In response to a receiving station extension connected to the receiving local MPB, the receiving local MPB responding to an extension occupancy request to the receiving virtual station; Most preferably, the receiving virtual station directly transmits a response call to the corresponding station of the calling local MPB according to the extension occupancy request response.

In addition, the voice call is performed between the stations connected to each local MPB through the occupied extension line, a direct call is connected between the originating station of the originating local MPB and the receiving station of the receiving local MPB. It is preferable that is a step to proceed.

Here, the local MPB and the central MPB can transmit and receive signals to and from each other through an IP-based protocol.

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Hereinafter, with reference to the accompanying drawings will be described in detail a control method of a key phone system having a virtual station according to an embodiment of the present invention.

3 illustrates a network configuration of a key phone system having a virtual station according to the present invention. As shown in FIG. 3, the present invention has a plurality of local MPBs (10, 20, 30) (Local Main Processor Board) and a plurality of local lines having several trunk lines and a plurality of stations to control call signals through trunk lines and stations. And a central MPB 1 (Central Main Processor Board) for relaying signals between the local MPBs 10, 20, and 30 with the information of the MPBs 10, 20, and 30.

Each local MPB 10, 20, 30 has a local database 12, 22, 32 in which information of various local gateways such as a connected extension telephone and a communication interface device is stored. In addition, the address MP of the central MPB 1 is registered in the local MPBs 10, 20, and 30 so that the local MPBs 10, 20, and 30 connected to the network request the registration to the central MPB 1.

The central MPB 1 has a central database 3 storing basic information (MAC) for connection with each of the local MPBs 10, 20, and 30, and the local MPBs 10, 20, and 30 require registration. The central MPB 1 performs a registration procedure for storing the information of the corresponding local MPBs 10, 20, and 30 in the central database 3. When the registration process is completed, the central MPB 1 generates a station numbering plan for each local MPB 10, 20, 30 and assigns it to the local MPBs 10, 20, 30. Here, each local MPB (10, 20, 30) stores the station numbering plan assigned from the central MPB (1), while reconfiguring the station numbering plan of their own station to reconfigure the system to complete the network configuration.

The central MPB 1 manages data for all registered local MPBs 10, 20, and 30, while the local MPBs 10, 20, 30, and the like, such as extension and trunk line information of each local MPB 10, 20, and 30, respectively. Information for the connection between the) in real time to each local MPB (10, 20, 30). In addition, the central MPB 1 can control the LED operation functions related to the calls of all registered local MPBs 10, 20, and 30.

Accordingly, when the local MPBs 10, 20, and 30 want to connect to other local MPBs 10, 20, and 30, the local MPBs 10, 20, and 30 call the central MPB 1 as a networking call. It is possible to receive the information of the local MPB (10, 20, 30) of the other party to be connected by sending a request required for). Here, a virtual station is created in the local MPBs 10, 20, and 30 according to a call occurrence. The virtual station is not actually an extension existing in the local MPBs 10, 20, and 30, but in software. An extension that works like a physical station. That is, the local MPBs 10, 20, and 30 create a virtual extension that exists in software, and exchange information about the virtual extension with other local MPBs 10, 20, and 30 through the central MPB 1. Receive and update.

Accordingly, the virtual station of the predetermined local MPB 10, 20, 30 is connected to the virtual station of the other local MPB 10, 20, 30 through the virtual station of each local MPB 10, 20, 30. In this case, the command transmitted through the call is delivered to the corresponding local MPB (10, 20, 30) as the actual extension. That is, the virtual station is a kind of software for selectively controlling each extension telephone connected to the local MPBs 10, 20, and 30, and when the control or call request for a predetermined extension telephone occurs, the software corresponding to the extension telephone A station is created that acts as if the actual call was made at the station. Thus, commands received at the virtual station can be delivered directly to the actual extension.

On the other hand, the connection between the local MPBs 10, 20, 30 and the connection between the local MPBs 10, 20, 30 and the central MPB 1 is not a connection between the actual telephone and the telephone, but a virtual connection between each system and the system. The connection between stations does not require the use of standard protocols for trunk line calls. Therefore, various protocols, such as an IP-based protocol such as an IPKT (Internet Protocol Key Telephone) protocol or a system connection protocol, can be applied. As such, when the use of the protocol is free, transmission and reception of data signals, control signals, etc. between the central MPB 1 and the local MPBs 10, 20, and 30 are facilitated. Various additional functions such as central management of LEDs of the local MPBs 10, 20, and 30 can be provided.

According to this configuration, each local MPB 10, 20, 30 exchanges information such as virtual station, trunk line, real station, etc. of each local MPB 10, 20, 30 through the central MPB 1, When a call occurs between MPBs 10, 20, and 30, virtual stations are activated in each local MPB 10, 20, and 30 to exchange signals with each other, and each virtual station controls the actual station according to the call signal. It works just like a call from inside.

A signal processing procedure of a key phone system having a virtual station according to the present invention having such a configuration will be described in detail with reference to FIGS. 4 and 5.

FIG. 4 is a signal diagram illustrating a process in which the local MPBs 10 and 20 update information of the virtual station through the central MPB 1, and are different from the station 1 belonging to the extension range of the local MPB 1 10. FIG. A part of the process of calling the station 2 of the local MPB2 20 is shown.

The local MPBs 10 and 20 in the initial state and the central MPB 1 are in the idle state IDLE_ST, and the virtual stations 14 and 24 are also not connected to each other (OUT_OF_SERV).

When an event occurs at extension 1 of local MPB1 10 (S1), local MPB1 10 recognizes that the call of extension 1 is a network call based on a previously stored numbering plan. Accordingly, the local MPB1 10 requests the central MPB 1 information of the station 2 of the MPB2 (S3).

The central MPB 1 requests the local MPB 2 20 for information on the connection with the local MPB 1 10 according to a request of the local MPB 1 10 (S5), and the local MPB 2 20 sends the central MPB 1 1. Information is provided to the virtual station 2 (24) for connection with the local MPB1 (10) (S9).

The central MPB 1 delivers the information provided by the local MPB2 20 to the local MPB1 10 (S10), and the local MPB1 10 transmits the information of the local MPB2 20 provided through the central MPB 1. The virtual station 1 14 is updated (S12).

By this process, the virtual station 1 14 and the virtual station 2 24 for communicating with the station 1 of the local MPB1 10 and the station 2 of the local MPB2 20 are respectively activated to maintain an interconnected state.

Here, the information transmitted and received between each MPB (10, 14, 20, 24) may be delivered according to the IPKTS protocol.

5 is a signal diagram illustrating a telephone call connection process between extension 1 of local MPB1 10 and extension 2 of local MPB2 20 after the process of FIG. 4 is completed.

According to the above description, when the virtual stations 14 and 24 are activated to maintain the interconnection state, the central MPB 1 sends an LED control signal to the local MPB1 10 and the local MPB2 20 (S20). Indicates communication status between each other.

Here, when the local MPB1 (10) makes the extension occupancy request through the virtual station 1 (14) (S22), the request of extension 1 is transmitted to the virtual station 1 (14) and the virtual station 1 (14) through the actual call Direct command is transmitted to station 2 of local MPB2 20 (S24), and a response is sent to local MPB1 10 (S26).

In response to a call through the virtual station 1 (14) of the local MPB1 (10), when an event that responds to the station 2 side of the local MPB2 (20) occurs (S28), the local MPB2 (20) sends a response signal to the virtual station 2 (S30), the virtual station 2 (24) sends a direct command to the station 1 of the local MPB1 (10) via the actual call (S32), and sends a response to the local MPB2 (20) ( S34).

Accordingly, a voice connection is established between the extension 1 of the local MPB1 10 and the extension 2 of the local MPB2 20 (S40). Here, the passage for transmitting and receiving the voice is the extension 1 and the local MPB2 (the local MPB1 10). It is made by connecting a direct line 2 of 20). At this time, the local MPB1 10 and the local MPB2 20 perform a voice relay function.

When both sides of the call is terminated and the voice line is recovered (S42), the local MPB1 (10) requests the virtual station 1 (14), the local MPB2 (20) requests to release the extension to the virtual station 2 (24) (S46). , S50), when the virtual stations 1 and 2 (14, 24) release the extension and respond with the local MPB1 (10) and the local MPB2 (20) (S48, S52), the local MPBs (10, 20) and the center. The MPB 1 is switched to the idle state IDLE_ST and the virtual station is also not connected to each other (OUT_OF_SERV) to return to the initial state.

On the other hand, in the central MPB 1, if no response (Event / Command) is detected from the local MPBs 10, 20, and 30 for a predetermined time or more than a predetermined number of times, information on the local MPB is out of service. Update to the local MPB and make sure that the call to the local MPB is not established. As such, the system disconnected from the central MPB 1 due to a failure or the like operates as an independent local system.

As described above, according to the present invention, a plurality of local MPBs are registered in a central MPB to manage mutual access, so that a network can be automatically configured between local MPBs through a registration process. Therefore, not only the network configuration is easy, but also the capacity can be expanded according to the information exchange capability of the central MPB, so that the line expandability is also excellent.

In addition, by directly transmitting a call command to the station of the local MPB of the actual counterpart using a virtual station that is dynamically generated as the call occurs, the same effect can be obtained internally. In addition, since various protocols can be applied to data transmission and reception between the local MPB and the central MPB, it is possible to add additional functions without configuring an additional control server, such as controlling the LED of each local MPB in the central MPB.

As described above, embodiments of the key phone system having a virtual station and a method of controlling the same according to the present invention are not limited to those described above, and various modifications may be made within a range obvious to those skilled in the art in connection with the present invention. Can be.

According to the key phone system having a virtual station of the present invention as described above and a control method thereof, the network is automatically configured between the local MPBs through the registration process by registering a plurality of local MPBs in the central MPB and managing mutual access. You can do that. Therefore, not only the network configuration is easy, but also the capacity can be expanded according to the information exchange capability of the central MPB, so that the line expandability is also excellent.

In addition, by directly transmitting a call command to the station of the local MPB of the actual counterpart using a virtual station that is dynamically generated as the call occurs, the same effect can be obtained internally. In addition, since various protocols can be applied to data transmission and reception between the local MPB and the central MPB, it is possible to add additional functions without configuring an additional control server, such as controlling the LED of each local MPB in the central MPB.

Claims (7)

Storing information of the plurality of local MPBs in a central MPB; Requesting, by the calling local MPB, information of a receiving local MPB through the central MPB; Requesting information from the central MPB to the receiving local MPB based on the previously stored information; The receiving local MPB providing information for the network connection requested by the central MPB and activating a virtual receiving station which exists in software; Providing, by the central MPB, information for the network connection of the receiving local MPB to the calling local MPB; Activating, by the originating local MPB, a virtual originating station that exists in software based on the information for the network connection from the central MPB; Each virtual station transferring a command call directly to an extension connected to a counterpart local MPB to occupy an extension line; And a voice call between the stations connected to each of the local MPBs through the occupied extension line. The method of claim 1, Wherein the information of the plurality of local MPB is stored in the central MPB, At the request of the local MPB, storing and registering information for accessing the local MPB by the central MPB; Assigning, by the central MPB, a station numbering plan of each local MPB in which the registration is completed, to each local MPB; And storing the station numbering plan allocated by the local MPB to the local MPB, and reconfiguring a station numbering plan of its own station to configure a network. Way. The method of claim 1, Occupying the extension line, Requesting, by the calling local MPB, an extension to the calling virtual station; Directing, by the originating virtual station, a command call to the corresponding station of the receiving local MPB according to the extension occupancy request; In response to a receiving station extension connected to the receiving local MPB, the receiving local MPB responding to an extension occupancy request to the receiving virtual station; And transmitting, by the receiving side virtual station, a response call directly to the corresponding station of the calling local MPB according to the extension occupancy request response. The method of claim 1, The voice call is performed between the stations connected to each local MPB through the occupied extension line, And a direct line is connected between the originating station of the originating local MPB and the receiving station of the receiving local MPB to perform a voice call. The method according to any one of claims 1 to 3, The local MPB and the central MPB control method of a key phone system having a virtual station, characterized in that for transmitting and receiving signals through an IP-based protocol. delete delete

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