KR19980016046A - How to perform a single function of the remote exchange module in case of call processing failure of TDX-10 series exchanger - Google Patents

Abstract

An object of the present invention is to provide a TDX-10 switch system in which when a call processing failure occurs in a host (HOST) in an exchange of a TDX-10 series and the host can not perform call processing control for the remote exchange module, ) Function to perform the call processing function by itself, and to allow the TDX exchange body to perform the call exchange function when the call processing failure is released in the state that the body of the TDX exchange is given a single function to the remote exchange module due to a call processing failure, And a remote exchange module (20) for accommodating a group of subscribers located remotely from the main body of the TDX-10 series exchanger, wherein the TDX- -10 series exchanger, comprising the steps of: detecting a call processing failure by an OMP in the TDX-10 series switchboard main body; Transmitting a call processing failure signal to the TLDL 21 in the RASM 20 via the CI 1, the TCDL 6 and the PCM line after a predetermined time elapses; A failure signal is transmitted to the load state control unit 32 in the RASP 30; the load state control unit 32 requests link change to the link setting unit 35 based on the call processing failure signal; The link setting unit 35 changes the link state to a single function link in response to a request from the load state control unit 32 to perform the sole function of the RASM 20, (1), a TCDL (6), and a PCM line to the TLDL (21) in the RASM (20) when the call processing fault is released as a result of the determination , A corresponding call processing failure release signal transmitted to the TLDL (21) is transmitted to the load state control section (32) in the RASP (30) The link setting unit 35 requests link change to the link setting unit 35 based on the call processing failure canceling signal and the link setting unit 35 requests the link setting unit 35 to change the link state, And the RASM 20 performs a remote exchange function by changing the link status to a remote exchange function link in response to the request, so that a call processing failure occurs in the host (HOST) in the TDX-10 series exchange, When the call processing control for the exchange module can not be performed, the remote exchange module automatically performs a stand-alone function to perform a call processing function, and when the call processing failure is released, So that the remote exchange module can be effectively utilized by the TDX-10 exchange.

Description

How to perform a single function of the remote exchange module in case of call processing failure of TDX-10 series exchanger

The present invention relates to a method for performing a single function of a remote exchange module in a call processing failure of a TDX-10 series exchanger, and more particularly, to a method of performing a single function of a remote exchange module in a TDX- When the call processing control for the exchange module is not possible, the remote exchange module performs a stand-alone function by itself to perform a call processing function, and when the call processing failure is released, Exchanging module to perform call processing control by the host. The present invention relates to a method for performing a sole function of a remote switching module in a call processing failure of a TDX-10 series exchange.

Conventionally, the electronic exchanger was developed and put into practical use by the US ATT for the first time in the world in May 1965, and has been continuously developed since the introduction of new technology.

Such electronic exchanges are designed to provide flexibility, reliability, and various services to enable quick and accurate access to subscribers' call lines using electronic devices operated at high speeds such as transistors and integrated circuits, to facilitate maintenance work, and to lead a complex information society. Nowadays, TDX series electronic exchanges called so-called all-electronic exchanges are mainly put into practical use.

Such an electronic exchanger is a large-capacity exchanger jointly developed by a predetermined exchange manufacturer, centering on the Korea Telecommunication Research Institute, so as to cope with the characteristics of various communication networks. It is a modular exchange system which can be economically constructed from a small capacity of farming and fishing villages to a large- It is easy to add new functions based on the structure, and it is made possible to distribute control functions using a 32-bit microprocessor and message communication by high-speed IPC (InterProcessor Communication). In addition, Speed communication.

For example, the TDX-10 exchange may include an ASS (Access Switching Subsystem) that performs overall functions of local call processing, an INS (Interconnection Network Subsystem) that performs overall functions of centralized call processing, And a Central Control Subsystem (CCS) for performing centralized operation and maintenance functions, and a remote exchange module (RASM) for efficiently and economically accommodating subscribers remote from the exchanger main body Respectively.

In the TDX-10 series exchanger described above, in providing the call processing service to the subscribers of the remote exchange module, when the matching between the main body (parent station) and the remote exchange module is normal, HOST) controls the subscriber to provide a call processing service.

In the meantime, only when a link failure occurs between the main body and the remote exchange module, the main processor RASP of the remote exchange module detects the corresponding link failure and performs a stand-alone function so that the remote exchange module itself To provide call processing services.

However, in the TDX-10 exchange and the remote exchange module described above, the link connection state between the main body and the remote exchange module is normal and a call processing failure (e.g., an overload state, a failure of the space division switch, etc.) Even if the main body can not perform call processing control for the remote exchange module, the remote exchange module can not perform the independent function because the link connection state between the main body and the remote exchange module is normal.

Accordingly, when the main body of the TDX-10 exchange is in a call processing disabled state, the remote exchange module also becomes unable to process a call, and can not provide a call processing service to a subscriber connected to the remote exchange module.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a TDX-10 switch that is capable of performing call processing control on a remote exchange module The present invention provides a method for performing a sole function of a remote exchange module in a call processing failure of a TDX-10 series switching center in which the remote exchange module performs a stand-alone function to perform a call processing function itself have.

It is another object of the present invention to provide a remote exchange system in which when a call processing failure occurs in a main body of a TDX exchange and a single function is assigned to a remote exchange module, The present invention provides a method for performing a sole function of a remote exchange module when a call processing failure occurs in a TDX-10 series switchboard in which a module controls call processing by the main body.

According to an aspect of the present invention, there is provided a TDX-10 series switchboard including a remote switch module for accommodating a subscriber group located at a distance from a main body of a TDX-10 series switchboard, 10, and a call processing failure signal is transmitted to the TLDL in the RASM through a CI, a TCDL, and a PCM line after a lapse of a predetermined time when a call processing failure is detected in the OMP step,

A step in which the corresponding call processing failure signal transmitted in the TLDL is transmitted to a load state control unit in the RASP, a step in which the load state control unit requests link change to the link setting unit based on the call processing failure signal, And a link state is changed to a single function link in response to a request from the load state control unit, and the RASM performs a single function, a single function execution method of a remote exchange module in a call processing failure of a TDX-10 series exchange is provided .

According to another aspect of the present invention, there is provided a TDX-10 series switchboard comprising a remote switch module for accommodating a subscriber group located at a distance from a main body of a TDX-10 series switchboard, 10, and a call processing failure signal is transmitted to the TLDL in the RASM through a CI, a TCDL, and a PCM line after a lapse of a predetermined time when a call processing failure is detected in the OMP A corresponding call processing failure signal transmitted in the TLDL is transmitted to a load state control unit in the RASP, a load state control unit requests link change to the link setting unit based on the call processing failure signal, Wherein the link state is changed to a single function link in response to a request from the load state control unit to perform the sole function of the RASM, And transmitting a call processing failure release signal to the TLDL in the RASM through a CI, a TCDL, and a PCM line when the call processing failure is released as a result of the determination, A step in which the release signal is transmitted to the load state control section in the RASP, the load state control section requests the link setting section to change the link based on the call processing failure release signal, and the link setting section requests the load state control section And the RASM performs a remote exchange function by changing a link status to a remote exchange function link by responding to a request from the remote exchange module, thereby performing a single function of the remote exchange module in a call processing failure of the TDX-10 series exchange.

According to the present invention, when a call processing failure state is detected in the OMP of the TDX-10 exchange and a call processing failure signal corresponding thereto is transmitted to the RASM, the load state controller configured in the RASP of the RASM processes the corresponding call The link setting unit requests the link setting unit to change the link status based on the failure signal, and the link setting unit changes the link status according to the request of the load status control unit and sets the single function so that the RASM can perform the single function.

In addition, according to the present invention having the above-described steps, when the release state of the call processing failure is detected in the OMP of the TDX-10 exchange, a call processing failure release signal corresponding thereto is transmitted to the RASM, The link setting unit requests the link setting unit to change the link state based on the call processing failure release signal and the link setting unit changes the link state according to the request of the load state control unit to set the remote exchange function, And is subjected to call processing by the body of the exchange.

1 is a block diagram illustrating a block configuration of a single function performing unit of a remote exchange module in a call processing failure of a TDX-10 series switchboard to which the present invention is applied,

FIG. 2 is a flowchart illustrating a process of assigning a single function of a remote exchange module in a call processing failure of a TDX-10 series switchboard according to an exemplary embodiment of the present invention;

FIG. 3 is a flowchart illustrating a process of recovering a single function of a remote exchange module in a call processing failure of a TDX-10 series switchboard according to an exemplary embodiment of the present invention.

Description of the Related Art [0002]

1: Control Interworking (CI),

2: Number Translation Processor (NTP),

3: INP (Interconnection Network Processor),

4: Space Switch Processor (SSP),

5: Space Switch (SSW)

6: TCDL (RASM PCM Central Data Link)

7, 22: a link status detection unit,

10: mother station INS (Host Interconnection Network Subsystem),

20: Remote Access Switching Modular (RASM),

21: TLDL (RASM PCM Local Data Link, local PCM data link link)

23: TSW (Time Switch),

24: Analog Subscriber Interface (ASI),

25: DCI / DTI (Digital CEPT1 Interface / Digital T1 Interface)

30: Remote Access Switching Processor (RASP),

31: call processing control section, 32: load state control section,

33: parent station load status section, 34: link status change section,

35: Link setting section.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a block configuration of an apparatus for performing a single function of a remote exchange module in a call processing failure of a TDX-10 series switchboard to which the present invention is applied. In FIG. 1, reference numeral 1 denotes NTP (2), INP SSP (4), and CMP OMP are connected to perform an IPC communication (Inter Processor Communication), and 2 is a code number, a translation number, a translation number, a translation number, Translating function, and performs routing function to perform call control and extension actions on the call restriction or incoming call resource in cooperation with the network management function.

Reference numeral 3 denotes an INP that performs a call processing function such as call discovery, a failure detection and recovery processing of a switch network, and a maintenance function related to state management such as block / unblock, A SSP that directly interfaces with the CI (1) to perform connection and release of a call processing service channel, a failure occurring during a space partition exchange, a control storage test in a related hardware unit, OMS of CCS connected to CCS performs maintenance functions such as system maintenance, test management, and management functions such as network management, billing, statistics, and database management. If necessary, .

Here, the OMP collects the faults generated in the respective devices on the assumption of the present invention, monitors whether a call processing failure (for example, an overload failure, a failure of the SSW 5) occurs, The call processing failure signal is transmitted to the TLDL 21 in the RASM 20 through the CI (1), the TCDL (6), and the PCM line, and when the generated call processing failure is released, To the TLDL 21 in the RASM 20 via the CI 1, the TCDL 6 and the PCM line.

Reference numeral 5 denotes an SSW which is configured as a redundant structure and performs a path changing function and a spatial switching function between time division switches located in respective ASSs (not shown) under the control of the SSP 4, and 6 denotes a redundant structure Multiplexing / demultiplexing a highway in order to match the RASM 20 to the space switch block when the RASM 20 is to be matched through the PCM line (T1 or E1), the function of management and operation of the trunk line, (TCDL) 7 for inserting and extracting an IPC message in the TCDL (1), and 7 is a link status detector for monitoring the link status of the TCDL (6).

As shown in FIG. 1, reference numeral 10 denotes a link state detection unit 7 (1), NTP 2, INP 3, SSP 4, SSW 5, TCDL 6, ) And performs the overall function of centralized call processing.

Reference numeral 21 shown in FIG. 1 is a TLDL that is configured as a redundant structure and performs a function of managing and operating a trunk line when the PCM line between the RASM 20 and the INS 10 is aligned. Reference numeral 22 denotes a TLDL 23 is a TSW that performs an internal call processing function by performing time slot allocation and aggregation function for a corresponding block through time slot exchange (TSI).

Reference numeral 24 denotes an ASI that performs functions (BORSCHT) such as matching, polarity reversal, and PPM transmission for a general subscriber, a public telephone subscriber, and a PABX subscriber, and 25 denotes an ASI DCI / DTI that performs trunk line matching function.

Reference numeral 31 denotes a call processing control unit for performing call processing functions in the RASM 20 based on signals from the parent station load state control unit 32 and the link setting unit 35. Reference numeral 32 denotes a call control unit The link setting unit 35 controls the link setting state of the link setting unit 35 based on the transmitted call processing failure signal and also controls the link setting unit 35 to set the parent station load state of the parent station load state unit 33 based on the parent station load signal transmitted through the TLDL 21 And a load state control section for controlling the setting state. Reference numeral 34 denotes a link state changing unit for changing the link setting state of the link setting unit 35 based on the link state sensed by the link state sensing unit 22, (That is, link setting according to the remote exchange function and the independent function) is determined by the control from the link state changing section 34. [

Reference numeral 30 denotes a RASM 20 composed of the call processing control unit 31, the load state control unit 32, the parent station load state unit 33, the link state changing unit 34, and the link setting unit 35. [ Is the RASP that performs the overall function.

Reference numeral 20 denotes a main body of the TDX-10 exchanger, which is composed of the TLDL 21, the link state sensing unit 22, the TSW 23, the ASI 24, the DCI / DTI 25, And performs a call processing operation in a case where a link failure or a call processing failure occurs in the TDX-10 exchange.

Next, the operation according to one embodiment of the present invention will be described in detail with reference to FIGS. 2 and 3 attached hereto.

FIG. 2 is a flowchart illustrating a process of assigning a single function of a remote exchange module to a TDX-10 series exchanger according to an exemplary embodiment of the present invention. FIG. 3 is a flowchart illustrating a TDX- 10 series exchanges in the case of call processing failure.

2, when a TDX-10 exchange is overloaded or a failure occurs in the SSW 5 and a call processing failure occurred in the home station (HOST) is detected in the OMP of the TDX-10 exchange (step 40) The OMP performs a timekeeping operation (step 42), and determines whether the displayed time has elapsed for a preset time, for example, 5 minutes (step 44).

If the time elapsed in step 42 exceeds 5 minutes (YES in step 44) after the occurrence of the call processing failure in step 40, the OMP transmits a call processing failure signal to the CI (1), the TCDL (6), the PCM line To the TLDL 21 of the RASM 20 (step 46).

Then, the call processing failure signal transmitted to the TLDL 21 is applied to the load state control unit 32 of the RASP 30. The load state control unit 32 controls the link setting unit 35 to request a link state change (step 48).

The link setting unit 35, which is requested to change the link state from the load state control unit 32, changes the link state set therein by setting the link set in the remote switch function as a sole function within the link setting unit 35 50).

As the link state is changed in the link setting unit 35, the call processing control unit 31 controls the ASI 24 and the analog subscriber registered in the DCI / DTI 25, regardless of the call processing control from the home station The ASI 24 and the DCI / DTI 25 are controlled by the switch state of the TSW 23 in response to the call connection request from the trunk line subscriber so that the subscriber connected to the ASI 24 and the DCI / Service (step 52).

Meanwhile, the OMP assigns the RASM 20 a single function through the above-described process, and then the OMP determines whether the call processing failure generated in the step 40 is released as shown in FIG. 3 (step 60).

Accordingly, when the operator checks the abnormal state of the SSW 5, the SSW 5 returns to the normal state, or the subscribers subscribed to the home station of the TDX-10 exchange terminate the call and the overload state of the TDX- If the call processing failure generated in step 40 of FIG. 2 is released (YES in step 60), the OMP sends a call processing failure release signal to the CI (1), the TCDL (6), and the PCM line To the TLDL 21 in the RASM 20 (step 62).

Then, a call processing failure release signal transmitted to the TLDL 21 via the PCM line is applied to the load state control section 33 in the RASP 30, and the load state control section 33 releases the call processing failure interruption (Step 64) by applying a predetermined control signal to the link setting unit 35 based on the signal.

The link setting unit 35, which is requested to change the link state from the load state control unit 32, changes the link state set therein by setting a link set as a sole function in the link setting unit 35 as a remote switching function 66).

As a result, the RASM 20 can control the ASI 24 and the subscribers connected to the DCI / DTI 25 by the call processing control of the TDX-10 exchange as the single function assigned to the RASM 20 is recovered. (Step 68).

That is, the RASM 20, to which the link is set by the remote exchange function, determines whether or not the call processing control unit 31 in the RASP 30 has received the ASI 24 based on the parent station load state set in the parent station load state unit 33 DSI 25 and the TSW 23 to provide a call processing service to the ASI 24 and the subscribers connected to the DCI / DTI 25.

As described above, according to an embodiment of the present invention, when a call processing failure occurs in the host (HOST) in the TDX-10 series switch and the host can not perform call processing control for the remote exchange module, The remote exchange module automatically performs a stand-alone function to perform a call processing function, thereby providing a normal call processing service to subscribers connected to the remote exchange module.

In addition, when the call processing failure is released, the call processing control of the remote exchange module is automatically performed by the TDX-10 exchange, thereby effectively utilizing the remote exchange module.

Claims (2)

A TDX-10 series switchboard comprising a remote switch module (20) for accommodating a subscriber group located remotely from a main body of a TDX-10 series switchboard, Detecting a call processing failure by an OMP in the TDX-10 series switchboard main body; Transmitting a call processing failure signal to the TLDL (21) in the RASM (20) via the CI (1), the TCDL (6), and the PCM line after a lapse of a preset time when the OMP detects a call processing failure; A corresponding call processing failure signal transmitted to the TLDL 21 is transmitted to the load state controller 32 in the RASP 30, The load state control unit 32 requests the link setting unit 35 to change the link based on the call processing failure signal, The link setting unit 35 changes the link state to a single function link in response to a request from the load state control unit 32 so that the RASM 20 performs a single function. A method for performing a single function of a remote exchange module in case of call processing failure of a series exchanger. A TDX-10 series switchboard comprising a remote switch module (20) for accommodating a subscriber group located remotely from a main body of a TDX-10 series switchboard, Detecting a call processing failure by an OMP in the TDX-10 series switchboard main body; Transmitting a call processing failure signal to the TLDL (21) in the RASM (20) via the CI (1), the TCDL (6), and the PCM line after a lapse of a preset time when the OMP detects a call processing failure; A corresponding call processing failure signal transmitted to the TLDL 21 is transmitted to the load state controller 32 in the RASP 30, The load state control section 32 requests the link setting section 35 to change the link based on the call processing failure signal, The link setting unit 35 changes the link state to a single function link in response to a request from the load state control unit 32 so that the RASM 20 performs a single function, Determining whether a call processing failure occurred in the OMP is released; And transmitting a call processing failure release signal to the TLDL 21 in the RASM 20 through the CI (1), the TCDL (6), and the PCM line when the call processing failure is released as a result of the determination, A corresponding call processing failure release signal transmitted to the TLDL 21 is transmitted to the load state controller 32 in the RASP 30, A step in which the load state controller (32) requests link change to the link setting unit (35) based on the call processing failure release signal, Wherein the link setting unit (35) changes the link status to a remote exchange function link in response to a request from the load status control unit (32) and the RASM (20) performs a remote exchange function. -10 How to perform a single function of the remote exchange module in case of call processing failure of exchanger.