KR19990071019A - Decentralized Switching Network via LAN Connection - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

Decentralized Switching Network

I. The technical problem that the invention is trying to solve

Each function module of the exchange is connected in a distributed structure to build a data network that can be switched over a LAN.

All. Summary of the Solution of the Invention

It consists of a service LAN module which is a basic resource necessary for the exchange service, a conference LAN module which is a conference function between each subscriber, and a LAN module that interfaces with each subscriber station and delivers voice and data on the network.

la. Important uses of the invention

It is easy to install and expand as distributed type that can be freely connected through LAN, and does not need a separate space for system installation.

Description

Decentralized Switching Network via LAN Connection

The present invention relates to a switching network of a distributed structure through a LAN connection, and more particularly to a distributed network that is easily expandable in the form of a combination of voice and data having a LAN as the main axis.

Conventional private exchanges have their own system architecture as shown in Figure 1 for voice switching.

Referring to FIG. 1, the switch 100 includes a control unit 101, a memory unit 102, a clock unit 103, a switch unit 104, a trunk line matching unit 105, and a subscriber matching unit 106, which operate under control of the control unit 101 under mutual correlation.

As such, since the conventional exchanger has a dedicated switch for voice, it is difficult to flexibly expand the system because the structure of the system is fixed. In addition, the conventional exchanger has a problem that when the system is expanded, the hardware becomes large and complex, and the whole of the new exchange has to be designed again. In addition, since the conventional exchanger has a special program system and development environment according to dedicated hardware in terms of software, there is a problem in that there is no compatibility and universality. In addition, the conventional exchange has a limited data interface in the integration of data and voice, which is a recent trend, and thus poses a new burden on system configuration and has difficulty in implementing data functions.

On the other hand, the conventional switch has a problem that the fixed switch capacity of 64kbps for voice transmission is fixed to provide bandwidth for various multimedia services. In addition, there is a problem that the conventional exchange is connected while consuming a fixed bandwidth even when there is no actual data when the voice data connection.

Accordingly, an object of the present invention is to provide a switching network of a flexible structure in a distributed control method through a LAN connection.

Another object of the present invention is to provide a switching network that is easy to expand and contract the system by modularizing each function.

Another object of the present invention is to provide a switching network having bandwidth for various multimedia services through the integration of data and voice.

The present invention for achieving these objectives is a service LAN module which is a basic resource necessary for the exchange service, a conference LAN module which is a conference function between each subscriber, and a LAN module that interfaces with each subscriber station and delivers voice and data on the network. It is characterized in that the configuration.

1 is a diagram showing a schematic configuration of a conventional private exchange system.

2 is a diagram illustrating a switching network of a distributed structure through a LAN connection according to an embodiment of the present invention.

3 is a diagram illustrating a configuration of a distributed architecture switching network through a LAN connection according to an embodiment of the present invention.

4 is a diagram showing the basic structure of a LAN PC for each function shown in FIG. 3;

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

2 is a switching network of a distributed structure through a LAN connection according to an embodiment of the present invention is connected via a data network and a LAN.

2, a switch network according to an embodiment of the present invention includes a common resource LAN module 220, a service LAN module 230, a conference LAN module 240, an ISDN LAN module 150, a trunk LAN module 260, a wireless LAN module 270, and a digital phone LAN module. 280 and subscriber LAN module 290. In the switching network according to the embodiment of the present invention, each module is connected through a local area network or a wide area network. That is, the switching network according to the embodiment of the present invention adopts a distributed structured control method that performs control of each module unit rather than the conventional centralized control method.

The common resource LAN module 220 provides basic resources necessary for the exchange service, that is, DTMF / R2 transmission and reception, tone sources, and the like.

The service LAN module 230 is responsible for the overall configuration and control coordination of each networked module. That is, it controls the entire configuration modules on the network and controls each module's IP address to update the IP address table of each module. In addition, it plays a role of controlling and connecting the match between each module during the operation of the exchange system such as call setup, and plays a role of charging and maintenance.

Accordingly, when a request for such a resource occurs in a subscriber module or trunk module, the service LAN module 230 allocates a common resource module 220 to enable service. After allocation, the service is provided by interworking with each subscriber or trunk line module through TCP / IP.

The conference LAN module 240 has a circuit for implementing a conference function between each subscriber. When receiving the request by the conference in the service LAN module 230, it receives the packet data with each subscriber / trunk line module and distributes the conference-processed packet data.

The ISDN LAN module 250 and the trunk LAN module 260 interface between a voice network (PSTN) and a LAN / WAN data network and transmit voice and data on the network.

The wireless LAN module 270 performs an interface between the wireless telephones 271, 272, 273 and the LAN / WAN data network, and delivers voice and data on the network.

The digiphone LAN module 280 performs an interface between the digiphone 281,282 and the LAN / WAN data network and transmits voice and data on the network.

The subscriber LAN module 290 performs an interface between subscriber phones 291, 292, 293 and a LAN / WAN data network, and delivers voice and data over a network. At this time, voice data is commonly loaded on the network in the form of a packet of TCP / IP through a compression process for real-time processing.

The LAN PC subscirber 201 and the LAN phone 202 may be directly connected to a LAN / WAN data network as a terminal having a LAN matching function without a separate matching device.

3 is a diagram illustrating a configuration of a switching network of a distributed structure through a LAN connection according to an embodiment of the present invention, wherein each LAN module illustrated in FIG. 2 is implemented as a LAN PC.

Referring to FIG. 3, a switching network of a distributed structure through a LAN connection according to the present invention is commonly connected through a data network and a LAN. And subscriber LAN PC390. In the switching network according to the embodiment of the present invention, each functional PC is connected through a local area network or a long distance network. Therefore, the switching network according to the embodiment of the present invention performs distributed control of each PC rather than the conventional centralized control method.

As illustrated in FIG. 4, the LAN PCs 340 to 390 implement different functions according to the card type mounted in the PC. That is, the LAN PC according to the present invention basically includes a LAN card for LAN connection, and additionally mounts a PC card for each function. The configuration of software installed and running on each PC consists of device program for hardware processing, signaling program for call processing and protocol processing on network, maintenance program for maintenance and network management, and interface program for interface between subscriber and network. It consists of.

In addition, each configuration is a card base that is added to the PC in hardware, and the software may be modularized so that several components may be simultaneously mounted on one PC.

The conference LAN PC 340 includes a circuit for implementing a conference function between each subscriber. When the conference LAN PC340 receives a conference request from each LAN PC, the conference LAN PC340 receives packet data with each subscriber / trunk LAN PC and distributes the conference processed packet data.

The ISDN LAN PC 350 and the trunk LAN PC 360 interface between the voice network (PSTN) and the LAN / WAN data network and deliver voice and data over the network.

The wireless LAN PC 370 performs interfacing between the wireless telephones 371,372 and the LAN / WAN data network and transmits voice and data on the network.

The Digiphone LAN PC 380 performs the interface between the Digiphone 381 and the LAN / WAN data network and delivers voice and data over the network.

The subscriber LAN PC 390 performs the interface between the subscriber phone 391 and the LAN / WAN data network and delivers voice and data on the network. At this time, voice data is commonly loaded on the network in the form of a packet of TCP / IP through a compression process for real-time processing.

The LAN PC subscirber 201 and the LAN phone 202 may be directly connected to a LAN / WAN data network as a terminal having a LAN matching function without a separate matching device.

Each LAN PC is responsible for the overall configuration, control and coordination of each module connected to the LAN / WAN data network. That is, it controls the entire configuration module on the network with the IP address of each module to update the IP address table of each module. In addition, each LAN PC performs the role of controlling and connecting the matching between each module during the operation of the exchange system, such as call setup, through which it performs the role of billing, maintenance. In addition, each LAN PC provides basic resources necessary for the exchange service, that is, DTMF / R2 transceiver and tone service. When a request for such a resource occurs in a connected subscriber or trunk line, each LAN PC analyzes the data and sends a signal by converting the pre-input data into a voice signal when transmitting a signal.

As described above, the present invention enables distributed control of a module unit, and thus can be freely connected through a LAN between modules. In addition, the present invention has the advantage that the wiring board for connecting the subscriber used in the past is not required. Accordingly, the present invention provides an exchange network capable of improving design efficiency by separating and modularizing a product through a flexible structure in a distributed control method based on a LAN. In addition, the present invention can flexibly expand or reduce the system, and in terms of software, it is possible to use a general purpose rather than a special programming system and development environment according to a dedicated hardware, thereby integrating data and voice to provide new and diverse multimedia services. Bandwidth can be provided. In addition, the present invention allows the call processing and maintenance programs of the exchanger to be run on the CPU of the PC using the network environment of the PC which is already widely spread. In addition, the present invention can achieve the structural economic breakdown of the hardware by eliminating the conventional huge hardware for exchange and adding only some additional functions to the LAN card.

Claims (9)

In a distributed network that is connected to a data network through a LAN / WAN, A service LAN module for controlling and coordinating the overall configuration of each module connected to the switching network; A common resource LAN module for providing basic resources required for the exchange service of the switching network; A conference LAN module for implementing a conference function between respective subscribers of the switching network; And a subscriber LAN module for performing an interface between each associated subscriber station and the switching network and transmitting voice and data on the switching network. The method of claim 1, wherein the subscriber LAN module, And decompressing the voice and data and transmitting the compressed data to the switching network in a packet format of TCP / IP. The method of claim 1, wherein the common resource LAN module, A distributed network with a DTMF / R2 transmission and reception function and tone generation function. The method of claim 1, wherein the service LAN module, When the subscriber LAN module receives a request for resources required for the exchange service, the common resource LAN module is allocated. The method of claim 1, wherein the service LAN module, When receiving a request for a conference from the subscriber LAN module, receiving the packet data with the subscriber LAN module and distributes the packet data conference processed in the conference LAN module. According to claim 1, wherein each LAN module, A distributed network comprising a LAN card, which is basically implemented as a LAN PC having a function card corresponding to each function. In a distributed network that is connected to a data network through a LAN / WAN, A conference LAN PC that implements a conference function between each subscriber of the switching network; And a subscriber LAN PC that performs an interface between each associated subscriber station and the switching network and delivers voice and data on the switching network. The method of claim 7, wherein the subscriber, A decentralized switching network comprising an analog subscriber or a digital subscriber or a wireless subscriber or an ISD subscriber and a trunk line. The method of claim 7, wherein each LAN PC, A decentralized switching network connected to a LAN through a LAN card, and further including a function card corresponding to a desired function.