KR100274195B1 - Method for public switched telephone network protocol process in v5.2 interface - Google Patents

Abstract

PURPOSE: A PSTN(public switched telephone network) protocol processing method of a V5.2 interface is provided to process call access between local exchanges using PSTN protocol efficiently by transmitting the analog line status information. CONSTITUTION: A subscriber is generated for a call processing(200). A PSTN protocol message is transmitted to a line processor in order to transfer the hook-off signal generated by the subscriber(201). If the line processor requests a bearer channel allocation(202), a main processor selects an idle bearer channel corresponding to the request and allocates it(203). The allocated bearer channel information is transferred to the line processor. A V5.2 interface controller processes a PSTN signal by transferring the related hook-off signal and the digit transmitting signal generated from the subscriber(205).

Description

How to handle the PSTIE protocol in V5.2 interface {METHOD FOR PUBLIC SWITCHED TELEPHONE NETWORK PROTOCOL PROCESS IN V5.2 INTERFACE}

TECHNICAL FIELD The present invention relates to a Full Electronic Telephone eXchange, and in particular, in a small capacity DTS-1100A (Improved) exchanger, the interface between a Local eXchange and an Access Network. The present invention relates to a method for processing a PSTN protocol (hereinafter abbreviated as PSTN) protocol of two interfaces.

In general, the DTS-1100A small-capacity exchanger is an international standard electronic exchange, which is used for local, local / Tandem of the PSTN, and ultimately in various network types such as general information communication network and intelligent network. It has been developed to develop into a flexible switch, and is suitable and suitable for all applications in terms of external size, performance, service flexibility, and network environment adaptability.

In the conventional exchange, the call connection method does not use the V5.2 interface, which is a call connection PSTN protocol using a matching network, for the hook-off and dialing signals of the general subscriber. Through the output to the main processor, it was found that the call connection between the general subscribers.

Accordingly, an object of the present invention is to provide a call connection process using a V5.2 interface PSTN protocol during a local exchange period with a matching network. The present invention provides a method for processing the PSTN protocol of two interfaces.

In order to achieve the above object, the present invention provides a method of processing a PSTN protocol of a V5.2 interface, comprising: generating a subscriber for call processing and transmitting a hook-off signal generated from the generated subscriber to the line processor according to the PSTN protocol; Requesting allocation of a bearer channel from the line processor receiving the hook off signal to the main processor; Selecting and assigning an idle bearer channel according to a bearer channel allocation request in the main processor, and transmitting the allocated bearer channel information to a line processor; Transmitting the hook-off signal and the digit transmission signal generated from the subscriber to the main processor using the bearer channel allocated by the line processor to establish the PSTN call processing.

1 is a block diagram for performing a PSTN protocol processing method of a V5.2 interface according to the present invention;

2 is a detailed flowchart illustrating a call connection method using a PSTN protocol of a V5.2 interface according to the present invention;

3 is a detailed flowchart illustrating a call blocking method using an originating matching network in a PSTN protocol of a V5.2 interface according to the present invention;

4 is a detailed flowchart illustrating a call blocking method using a called-side matching network in a PSTN protocol of a V5.2 interface according to the present invention.

<Explanation of symbols for main parts of drawing>

10: LP 12: AN

14: VIC section 20: MP

22: VSC section 24: SCC section

26: SDH part 30: IOP part

DETAILED DESCRIPTION Hereinafter, the objects and features of the present invention will be described in more detail with reference to the accompanying drawings so that the objects and features of the present invention can be more clearly understood.

1 is a block diagram for performing a PSTN protocol processing method of a V5.2 interface according to the present invention, a line processor (hereinafter referred to as LP) 10 and an access network: , Abbreviated as AN) 12, V5.2 Interface Control (hereinafter abbreviated as VIC) unit 14, and Main Processor (hereinafter abbreviated as MP) (20) ), V5.2 Subscriber Control (hereinafter abbreviated as VSC) unit 22, Subscriber Call Control (hereinafter abbreviated as SCC) unit 24, and subscriber data A handling unit (Subscriber Data Handling: abbreviated as SDH) 26, and an input output processor (hereinafter referred to as IOP) (30).

The LP 10 is a line processor including a VIC unit 14 internally. The LP 10 detects a Hook Off / Hook On signal transmitted from a general subscriber and connects a call with a dialed destination general subscriber. Sends a hook-off signal to the MP 20.

The AN 12 is a matching network that accepts analog and digital subscribers and connects to the exchange via the V5.2 interface. The AN 12 receives hook-on and hook-off signals from the general subscriber and transmits the PSTN protocol message to the VIC unit 14. Send it.

The VIC unit 14 is a block for separating and controlling the protocol of the V5.2 interface. The VIC unit 14 receives a PSTN protocol message from the AN 12 and bears a bearer channel (Bearer) to the VSC unit 22 in the MP 20. request an allocation for channel). Here, the bearer channel is a B-assigned from a Pulse Code Modulation Encoded 64 Kbit / sec channel from a PSTN user port or a Basic Access user port or a Primary Access user port. Provides bidirectional transmission capability for the channel.

The MP 20 is a main processor including the VSC unit 22, the SCC unit 24, and the SDH unit 26 internally. The MP 20 receives various signals transmitted from the LP 10, and receives a general subscriber and a relay. It is a main processor that performs call processing and performs maintenance functions for system state management.

The VSC unit 22 is a block that performs a call processing and operation / maintenance process of a V5.2 interface subscriber. The VSC unit 22 selects an idle bearer channel in response to a bearer channel allocation request of the VIC unit 14, and selects a VIC unit ( 14).

The SCC unit 24 is a block that performs a call processing function of a general subscriber. The SCC unit 24 transmits / receives a hook on / hook off signal transmitted from the VIC unit 14 and signals necessary for digit transmission and call processing. Connect

The SDH unit 26 is a block for processing data of a general subscriber and is connected to a call connection by a Man & Machine Communication block (not shown), which is connected to the IOP 10 (hereinafter, referred to as MMC). The information on the call blocking is registered, and the terminal related information of the general subscriber is generated, processed and changed, and canceled, and the work code, that is, the remote switching code and the control are transmitted to the SCC unit 24.

The IOP 30 is an input / output processor that is in charge of input / output port control, and performs message data handling for analyzing and managing messages input and output through the input / output port, and state management for each input / output port. And Input Output Process Management, which performs input and output control functions, Disk Handling, which performs file management functions for hard disks in a PC, and creation and system software for system data. It consists of Data Generation that performs the matching function and Data Extraction which extracts the station data from the system package in operation, and uses the MMC to connect and disconnect the PSTN call. Information is registered in the SDH unit 26.

With reference to the flowchart of Fig. 2, the call connection method using the PSTN protocol of the V5.2 interface according to the present invention will be described in more detail based on the above-described configuration.

First, the AN 12 generates a general subscriber to process call between general subscribers (step 200).

When the originating / receiving end subscriber is created, the AN 12 receives the hook-off signal among the hook-on / hook-off signals transmitted from the terminal of the calling-end general subscriber, and VIC transmits the PSTN protocol message to transmit the hook-off signal. Transfer to section 14 (step 201).

After receiving the PSTN protocol message from AN 12, VIC unit 14 requests allocation of a bearer channel to VSC unit 22 to process the PSTN protocol message (step 202).

The VSC unit 22 allocates an idle bearer channel of the bearer channel and transmits it to the VIC unit 14 (step 203).

The VIC unit 14 transmits to the AN 12 that it has allocated an idle bearer channel, and again receives an allocation confirmation tone from the AN 12 (step 204).

Thereafter, the VIC unit 14 transmits a hook-off signal and a signal for digit transmission and call processing to the SCC unit 24 by using the allocated bearer channel information, and receives the signal again to establish a PSTN call (step 205). ).

With reference to the flowchart of FIG. 3, a call blocking method using an originating matching network in the PSTN protocol of the V5.2 interface according to the present invention will be described in more detail.

When the general subscriber connected to the AN 12 is the calling party associated with call blocking, the VIC unit 14 is provided with a hook on signal according to disconnection from the general subscriber connected to the AN 12 (step 300). ).

The VIC unit 14 requests the VSC unit 22 to release the bearer channel set according to the hook-on signal (step 301), and then sends a bearer channel release message from the VSC unit 22 to the VIC unit 14. Transmit (step 302).

The VIC unit 14 transmits a release acknowledgment signal and an unassigned signal to the AN 12 (step 303).

The VIC unit 14 receives the confirmation sound for the ACK release signal and the de-allocation signal to the AN 12, so that the PSTN call is blocked (step 304).

With reference to the flowchart of FIG. 4, the call blocking method using the called party matching network in the PSTN protocol of the V5.2 interface according to the present invention will be described in more detail.

When the general subscriber connected to the AN 12 is the called party for the call blocking, the VIC unit 14 receives a channel release signal from the SCC unit 24 (step 400).

When the VIC unit 14 requests the bearer channel release to the VSC unit 22 (step 401), the VSC unit 22 transmits information on the bearer channel release to the VIC unit 14 (step 402).

The VIC unit 14 transmits a disconnect signal to the AN 12 (step 403).

It is determined whether the bearer channel release signal has been transmitted from the VSC unit 22 to the VIC unit 14 (step 404). When the bearer channel release signal is transmitted in the decision 404, the PICN call is blocked because the VIC unit 14 transmits a de-allocation signal to the AN 12 (step 405).

Therefore, by using the AN 12 matched with the line processor and the VIC unit 14 for controlling the V5.2 interface, the interface to the PSTN protocol is facilitated, thereby facilitating call connection and call release between the local exchange and the matching network. Is processed.

As described above, the present invention described above does not substantially control the call processing procedure in the matching network of the line processor of the local exchange, but transmits analog line status information by using the V5.2 interface protocol to connect the call between general subscribers, There is an effect that the call connection using the PSTN protocol is smoothly handled during the exchange.

Claims (2)

A method of processing a PSTN call of a V (5.2) interface in an exchange having a matching network, a line processor, and a main processor, Generating a subscriber for call processing and transmitting a hook-off signal generated from the generated subscriber to the line processor according to a PSTN protocol; Requesting allocation of a bearer channel from the line processor receiving the hook-off signal to the main processor; Selecting and assigning an idle bearer channel according to the bearer channel allocation request in the main processor, and transmitting the allocated bearer channel information to the line processor; Transmitting, by the line processor, the hook-off signal and the digit transmission signal generated from the subscriber to the main processor by using the allocated bearer channel to establish a PSTN call processing. 5.2 How the interface handles the PSTN protocol. The method of claim 1, wherein the PSTN call processing method includes: Detecting a hook on signal generated from the subscriber; Releasing the set bearer channel according to the detected hook on signal; And transmitting the released bearer channel information to the line processor and transmitting the information indicating that the bearer channel is released from the line processor to the matching unit to block the PSTN call. 5.2 How to handle the PSTN protocol of an interface.

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