KR100275463B1 - Internet phone switching system using vme bus and sc bus - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to an Internet telephone switching system using a VME bus and an SC bus.

2. The technical problem to be solved by the invention

An object of the present invention is to provide an Internet telephone exchange system that can be expanded to a large capacity while maintaining a service function that a system should have by controlling a plurality of exchange devices spaced through one control device by employing a VME bus and an SC bus. There is this.

3. Summary of Solution to Invention

The present invention comprises a plurality of switching means connected between the Internet network and the telephone exchange network to compress and restore and transmit voice signals transmitted and received between subscribers; And system control means connected to the Internet network to control the flow of signals transmitted and received between a plurality of exchange means.

4. Important uses of the invention

The present invention is used to relay a call between subscribers of the telephone exchange network through the Internet network.

Description

Internet telephone exchange system using VMB bus and Etsu city bus

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an Internet telephone exchange system, and more particularly, to an Internet telephone exchange system employing a VME bus and an SC bus to relay calls between subscribers of a telephone exchange network through an internet network.

In general, the Internet telephone exchange system relays control signals necessary for calls and calls between subscribers of the telephone exchange network through the Internet network, thereby increasing the efficiency of using a long trunk trunk between the exchanges and providing a transparent telephone call service to the subscribers. It is a system to provide.

However, the conventional Internet telephone switching system is limited to slot expansion by the technical characteristics of the bus (for example, PCI and ISA) using a personal computer (PC) as a platform. As well as receiving, there was a problem that hot-swapping of the board is impossible.

In addition, commercially available Internet telephone switching systems are generally implemented by using a PC platform or by mounting a chip for voice processing in a communication relay device such as a router.

However, the PC platform has the same problems as described above due to the technical characteristics of the bus structure itself, and in the case of the router platform, it is not only embedded with a lot of other software but also expandable unless a newly designed platform for Internet telephony is newly designed. There was still a problem.

Accordingly, the present invention has been made in order to solve the above problems, in relaying the call between the subscribers of the telephone exchange network through the Internet network, by employing a VME bus and SC bus a plurality of spaced apart through one control device By controlling the switching device, an object thereof is to provide an internet telephone switching system that can be expanded to a large capacity while maintaining a service function that a system should have, and can also significantly improve a call processing speed.

1 is a configuration diagram of an embodiment of an Internet telephone switching system using a VME bus and an SC bus according to the present invention.

2 is a structural diagram of a back-plane of a VME bus to which the present invention is applied.

3 is a pinout diagram of an SC bus using the connector P2 of the VME bus to be applied to the present invention.

4 is a structural diagram of a trunk interface located on the backplane backside of a VME bus to which the present invention is applied;

5 is an exemplary view illustrating a mounting state of the exchange apparatus of FIG. 1.

Explanation of symbols on the main parts of the drawings

110: system controller 121 to 12n: exchange device

131: trunk interface 132: voice processing unit

133: signal controller

The present invention for achieving the above object, in the Internet telephone exchange system for relaying calls between subscribers of the telephone exchange network through the Internet network,

A plurality of exchange means connected between the Internet network and the telephone exchange network for compressing, restoring, and transmitting voice signals transmitted and received between the subscribers; And system control means connected to the Internet network for controlling the flow of signals transmitted and received between the plurality of exchange means, wherein the plurality of exchange means each comprises connection means for connecting signals transmitted and received with the switched switching network. ; Is connected to the connection means via a VME bus and an SC bus, compresses the voice signal transmitted from the connection means through the VME bus, and restores the compressed voice signal from the signal control means to the original voice signal. Voice processing means for transmitting to the connection means via a bus; And confirming whether the signal transmitted from the connection means through the VME bus is a voice signal, and transmitting the signal to the connection means through the VME bus, and transmitting the compressed voice signal transmitted from the voice processing means through the VME bus to a packet signal. And the signal control means for converting the packet signal received from the internet network into a compressed voice signal and transmitting the compressed signal to the voice processing means through the VME bus.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5.

1 is a configuration diagram of an embodiment of an Internet telephone switching system using a VME bus and an SC bus according to the present invention.

As shown in FIG. 1, the Internet telephone switching system using the VME bus and the SC bus of the present invention includes a system controller 110 connected to the Internet network, and a switching device 121 to 12n connected between the telephone switching network and the Internet network. ).

Switching devices 121 to 12n are each a trunk interface 131 for connecting signals transmitted and received with a telephone switching network, a voice processing unit 132 connected to the trunk interface 131 via a VME bus and an SC bus, The signal controller 133 is connected to the trunk interface 131 and the voice processor 132 through the VME bus, respectively.

Here, the control signal is transmitted through the VME bus connected between the trunk interface 131 and the voice processing unit 132, while the voice signal is transmitted through the SC bus connected between the trunk interface 131 and the voice processing unit 132. Is passed.

In addition, the system controller 110 may use a workstation that is mainly used.

Referring to the operation of the Internet telephone switching system using the VME bus and SC bus of the present invention having the structure as described above in detail as follows.

In the following description, a case where user 1 calls user n through an internet telephone exchange system will be described.

When the control information transmitted from the user 1 is transferred to the switching device 121 through the telephone exchange network, the trunk interface 131 of the switching device 121 connects the transferred control information to the signal controller 121.

Subsequently, the signal controller 121 determines whether the transmitted control information is a voice signal, and if it is a voice signal, transmits it to the trunk interface 131 through the SC bus.

As such, the voice signal transmitted from the signal controller 121 to the trunk interface 131 is transmitted to the voice processor 132 through the VME bus, and then compressed by the voice processor 132 and transmitted to the signal controller 121. .

The signal controller 121 converts the voice signal compressed by the voice processor 132 into packet data so that the voice signal can be transmitted to the Internet network and then transmits the packet signal to the Internet network.

When the packet data is transferred from the switching device 121 to the internet network through the above process, the system controller 110 controls the internet network to transfer the packet data to the switching device 12n to which the user n is connected.

In this way, the packet data delivered to the switching device 12n is transmitted to the user n through the following process.

That is, the signal control unit 133 of the switching device 12n converts the packet data transmitted from the Internet network into a compressed voice signal from the switching device 121, and transmits it to the voice processing unit 132 of the switching device 12n. In this way, the converted compressed speech signal is decompressed by the speech processing unit 132 of the switching device 12n and restored to the original speech signal.

The recovered voice signal is transmitted to the trunk interface 131 of the switching device 12n and then transmitted to the user n through the telephone exchange network.

Of course, the voice signal transmitted from user n to user 1 is transmitted through the reverse process.

FIG. 2 is a structural diagram of a back-plane of a VME bus according to the present invention, and shows a backplane of a VME bus provided by a rack of a standard VME bus. Here, P1 is a connector at the top and P2 is a connector at the bottom.

That is, the connector P1 is used for system control according to the standard VME bus interface, and the pin P of the SC bus is arranged using the connector P2.

3 is a pin layout view of an SC bus using the connector P2 of the VME bus to be applied to the present invention.

4 is a structural diagram of a trunk interface located on the back plane backside of a VME bus according to the present invention.

FIG. 5 is an exemplary view illustrating a mounting state of the exchange apparatus of FIG. 1, in which a trunk interface, a voice processing unit, a LAN interface, and a controller of FIG. 1 are mounted in a rack of a VME bus. .

Although the technical idea of the present invention has been described in detail according to the above preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

As described above, the present invention uses the VME bus and the SC bus to configure the exchange device, so that the system can be expanded to a large capacity while maintaining the service function that the system should have, and also hot-swapping of the SC bus. ) Can be implemented to maintain excellent reliability close to the telephone service reliability of the service provider.

Claims (2)

In the Internet telephone exchange system for relaying calls between subscribers of the telephone exchange network through the Internet network, A plurality of exchange means connected between the Internet network and the telephone exchange network for compressing, restoring, and transmitting voice signals transmitted and received between the subscribers; And In order to control the flow of signals transmitted and received between the plurality of exchange means, the system control means connected to the Internet network, Each of the plurality of exchange means, Connecting means for connecting a signal transmitted and received with the switched switching network; Is connected to the connection means via a VME bus and an SC bus, compresses the voice signal transmitted from the connection means through the VME bus, and restores the compressed voice signal from the signal control means to the original voice signal. Voice processing means for transmitting to the connection means via a bus; And Check whether the signal transmitted from the connection means through the VME bus is a voice signal and transmit it to the connection means through the VME bus, and the compressed voice signal transmitted from the voice processing means through the VME bus is a packet signal. The signal control means for converting the transmission to the Internet network, converts the packet signal received from the Internet network into a compressed voice signal and delivers it to the voice processing means through the VME bus Internet telephony exchange system using a VM bus and the Etsu city bus comprising a. The method of claim 1, And a control signal is transmitted through the SC bus connected between the connection means and the voice processing means.