KR20000046566A - Remote access switching system - Google Patents

Abstract

PURPOSE: A remote access switching system is provided so that a remote exchange or a local exchange can manages the call processing, operation, administration and maintenance of a miniature remote exchange by configuring the sub processor of the miniature remote exchange in the remote exchange or the local exchange. CONSTITUTION: A remote access switching system consists of a remote exchange(30) and a miniature remote exchange(50). A subscriber access main processor(32) carries out a local subscriber and transit call processing. A sub processor(34) manages the call processing, operation, administration and maintenance of the miniature remote exchange(50) through an inter processor communication distribution part(36), a time switch(38) and a remote PCM(Pulse Code Modulation) interface part(40). The inter processor communication distribution part(36) distributes communications among the subscriber access main processor(32), the sub processor(34) and the time switch(38) appropriately. The time switch(38), controlled by the subscriber access main processor(32) and the sub processor(34) through the inter processor communication distribution part(36), provides a switching function in a time division system.

Description

Remote switching system

TECHNICAL FIELD The present invention relates to a remote access switching system, and more particularly to an exchange system for setting a subprocessor in a small remote switch to a remote switch or a home exchange.

1 is a block diagram showing an embodiment of a remote switching system according to the prior art, which is composed of a remote switch and a small remote switch 10. In this case, the small remote switch 10 may include a remote PCM (Pulse Code Modulation) matching unit 12, a ring supply unit 14, an analog subscriber and digital subscriber matching unit 16, a network synchronizer 18, and a lower processor 20. It is composed of

In the figure, the remote PCM matching unit 12 in the small remote switch 10, which is composed of two shelves, includes an access switching subsystem of the subprocessor 20 and the remote switch or the home exchange. ASS) to PCM. At this time, the remote switch is matched with the PCM at the transmission rate of E1 and the access switching subsystem of the home exchange is matched with the PCM at the transmission rate of 4E1.

The ring supply 14 generates a ringtone to be sent to the subscriber.

The analog subscriber and digital subscriber matching unit 16 matches the analog subscriber and the digital subscriber with the subprocessor 20. In addition, the analog subscriber and digital subscriber matching unit 16 receives the ring tone from the ring supply unit 14 and selectively transmits the ring tone to the analog subscriber and the digital subscriber. At this time, the analog subscriber and digital subscriber matching unit 16 accommodates 1,024 analog subscribers and 512 digital (2B + D) subscribers.

The network synchronizer 18 provides a network synchronizer signal to the remote PCM matching unit 12 and the analog subscriber and digital subscriber matching unit 16 so that the remote PCM matching unit 12 and the analog subscriber and digital subscriber matching unit 16 are provided. Operate according to the network.

The lower processor 20 consists of a redundant Telephony Processor (TP) to manage call processing and operation maintenance.

Therefore, since the number of interprocessor communication nodes used in the lower processor 20 is limited, up to 16 small remote exchanges can be connected to the home exchange, and up to 8 small remote exchanges can be connected to the remote exchange. . Therefore, there is a drawback that hardware and software changes are inevitable when additional remote exchanges or small remote exchanges are to be configured. In addition, a cost increase occurs because each time the number of small remote exchanges is added, a lower processor must also be added.

SUMMARY OF THE INVENTION The present invention has been made to remedy the above-mentioned shortcomings, wherein a subprocessor in a small remote exchange is set to a remote exchange or a home exchange so that the remote exchange or the home exchange exchange manages call processing and operation maintenance of the small remote exchange. The purpose is to provide an exchange system.

In order to achieve the above object, the present invention provides a remote switching system comprising a small remote switch and a remote switch, wherein the remote switch comprises: a subscriber access higher processor which performs subscriber and relay call processing of a local station; A lower processor that manages call processing and operational maintenance of the small remote switch; A time switch providing a switching function in a time division manner under control of the lower processor and the subscriber access higher processor; And a remote matching unit for matching the lower processor and the small remote switch.

1 is a block diagram showing an embodiment of a remote switching system according to the prior art;

2 is a block diagram illustrating one embodiment of a remote switching system in accordance with the present invention.

<Explanation of symbols for main parts of drawing>

30: remote switch 32: subscriber access upper processor

34: lower processor 36: communication distribution unit between processors

38: time switch 40, 52: remote PCM matching unit

50: small remote exchange 54: ring supply

56: analog subscriber and digital subscriber matching unit

58: network donation

Hereinafter, described in detail with reference to the accompanying drawings an embodiment of the present invention as follows.

2 is a block diagram showing an embodiment of a remote switching system according to the present invention, which is composed of a remote switch 30 and a small remote switch 50. In this case, the remote switch 30 includes a subscriber access higher processor 32, a lower processor 34, an interprocessor communication distribution unit 36, a time switch 38, and a remote PCM matching unit 40. In addition, the small remote switch 50 is composed of a remote PCM matching unit 52, a ring supply unit 54, analog subscriber and digital subscriber matching unit 56, and a network synchronizer unit 58.

In the figure, the subscriber access higher processor 32 in the remote switch 30 is configured with redundancy to perform subscriber and relay call processing of the own station.

The lower processor 34 is composed of redundant TPs to perform call processing and operation maintenance of the small remote switch 50 through the interprocessor communication distribution unit 36, the time switch 38, and the remote PCM matching unit 40. Preside over

The interprocessor communication distribution unit 36 is configured in redundancy so as to appropriately distribute the communication between the subscriber access upper processor 32 and the lower processor 34 and the time switch 38.

The time switch 38 receives the control of the lower processor 34 and the subscriber access upper processor 32 through the interprocessor communication distribution unit 36 and provides a switching function in a time division manner.

The remote PCM matching unit 40 matches the lower processor 34, the time switch 38, and the small remote switch 50 with the PCM.

The remote PCM matcher 52 in the small remote switch 50 matches PCM with the remote PCM matcher 40.

The ring supply unit 54 generates a ring tone to be sent to the subscriber.

The analog subscriber and digital subscriber matching unit 56 matches the analog subscriber and digital subscriber with the remote PCM matching unit 52. At this time, the analog subscriber and digital subscriber matching unit 56 accommodates 512 analog subscribers and 256 digital (2B + D) subscribers. In addition, the analog subscriber and digital subscriber matching unit 56 receives the ring tone from the ring supply unit 54 and selectively transmits the ring tone to the analog subscriber and the digital subscriber.

The network synchronizer 58 provides a network synchronizer signal to the remote PCM matching unit 52 and the analog subscriber and digital subscriber matching unit 56 so that the remote PCM matching unit 52 and the analog subscriber and digital subscriber matching unit 56 are provided. Operate according to the network.

The device control board (not shown in the figure) in the small remote switch 50 collects the states of the analog subscriber, the digital subscriber, and the analog subscriber and the digital subscriber matcher 56 to connect the remote PCM matchers 52, 40 and It transmits to the lower processor 34 through the internal bus. In addition, the device control board is controlled from the lower processor 34 through the remote PCM matching unit 52, 40 and the internal bus.

The above-described subprocessor 34 may be installed in the access switching subsystem (not shown in the figure) of the main office switch in addition to the remote switch 30. At this time, the small remote switch 50 and the access switching subsystem of the main office switch are matched with the PCM at the transmission rate of E1.

As described above, the present invention sets the sub-processor 34 in the small remote switch 50 to the remote switch 30 or the home exchange so that the call of the small remote switch 50 can be made from the remote switch 30 or the home exchange. Be responsible for handling and operational maintenance. Therefore, since the lower processor 34 does not need to be added when additionally installing the small remote switch, there is an effect that a cost reduction is caused by the addition of the small remote switch.

Claims (1)

In a remote switching system consisting of a small remote switch and a remote exchange: The remote switch includes a subscriber access higher processor which performs subscriber and relay call processing in its own country; A lower processor that manages call processing and operational maintenance of the small remote switch; A time switch providing a switching function in a time division manner under control of the lower processor and the subscriber access higher processor; And a remote matching unit for matching the lower processor and the small remote switching unit.