KR100211889B1 - Stand alone function processing method of remote access switching module of time division exchange-10 series - Google Patents

Abstract

An object of the present invention is that the remote switching module is a stand alone switch when a call processing failure occurs in a host in the TDX-10 series switch and the host cannot perform call processing control for the remote switching module. Function to perform the call processing function by itself, and when the call processing failure is released in the state where the main processing unit of the TDX exchanger has generated a call processing failure and the remote switching module has been given a single function, the remote switching is performed. TDX configured with a remote exchange module 20 for accommodating a group of subscribers remotely from the main body of the TDX-10 series exchanger by recovering a single function of the module so that the remote exchange module is call-processed controlled by the main body. In the -10 series exchanger, OMP in the main body of the TDX-10 series exchanger detects a call processing failure, and when the call processing failure is detected in the OMP Transmitting a call processing failure signal to the TLDL 21 in the RASM 20 after a predetermined time has elapsed through the CI (1), TCDL (6), and PCM lines, and the corresponding call processing transmitted to the TLDL 21; Transmitting a fault signal to the load state controller 32 in the RASP 30; requesting the link setting unit 35 to change the link based on the call processing fault signal; The link setting unit 35 changes the link state to a single function link in response to a request of the load state control unit 32 so that the RASM 20 performs a single function. Determining whether the signal is released, and if the call processing failure is released, transmitting the call processing failure release signal to the TLDL 21 in the RASM 20 through the CI (1), TCDL (6), and PCM lines. The call processing failure release signal transmitted to the TLDL 21 is transmitted to the load state control unit 32 in the RASP 30. And requesting the link setting unit 35 to change the link based on the call processing failure release signal, and the link setting unit 35 of the load state control unit 32 In response to a request, the RASM 20 performs a remote switching function by changing a link state to a remote switching function link, and a call processing failure occurs in a host in a TDX-10 series exchange so that the host is remote. When the call processing control for the exchange module cannot be performed, the remote exchange module automatically performs a stand alone function to perform a call processing function by itself, and when the call processing failure is released, the remote exchange module By automatically performing the call processing control of the TDX-10 switch it is possible to effectively utilize the remote exchange module.

Description

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

The present invention relates to a method for performing a single function of a remote exchange module when a call processing failure of a TDX-10 series exchange is performed. More specifically, a call processing failure occurs in a host (HOST) in a TDX-10 series exchange. When the call processing control for the exchange module cannot be performed, the remote exchange module performs a stand-alone function to perform a call processing function by itself, and when the call processing failure is released, the remote The present invention relates to a method for performing a single function of a remote switching module in case of a call processing failure of a TDX-10 series exchanger such that the switching module is controlled by the host.

Typically, the electronic exchanger was developed and put into practice for the first time in the world by the US ATT in May 1965, and has since continued to develop with the introduction of new technologies.

These electronic exchangers use high-speed electronic devices such as transistors and integrated circuits to quickly and accurately connect subscriber's communication paths, facilitate maintenance work, and provide flexibility, reliability, and various services to lead a complex information society. As a system that can be provided, the TDX series electron exchanger, which is now called an electron exchanger, is mainly used.

Such electronic switch is a large-capacity exchanger co-developed by a predetermined exchange producer centering on the Korea Telecommunications Research Institute to cope with the characteristics of various communication networks. It is easy to add new function based on structure, distributed control function using 32-bit using microprocessor, and message communication by high speed IPC (Inter Processor Communication) High speed communication was made.

Such a conventional all-electronic exchanger such as a TDX-10 exchanger is typically an ASS (Access Switching Subsystem) performing the overall function of localized call processing, an INS (Interconnection Network Subsystem) performing the overall function of centralized call processing, Consists of three subsystems, such as the Central Control Subsystem (CCS), which performs centralized operation and maintenance functions, and a Remote Switching Module (RASM) for more efficient and economical acceptance of subscriber groups far from the main body of the exchange. It is provided.

In the above-described TDX-10 series exchange, the call processing service is provided to the subscribers of the remote exchange module. When the matching of the main body and the remote exchange module is normal, the call processing related matters of the remote exchange module are displayed. HOST) provides call processing service to the subscribers.

On the other hand, only when a link failure occurs between the main body and the remote switching module, the RASP, the main processor of the remote switching module, detects the corresponding link failure, and a stand alarm function is performed so that subscribers of the remote switching module themselves are independent of the main body. Provide call processing services.

However, in the TDX-10 switch and the remote switching module, the link connection state between the main body and the remote switching module is normal, and a call processing failure (for example, an overload condition or a failure of a space splitting switch) occurs inside the main body. Even when the main body cannot perform the call processing control for the remote switching module, the remote switching module cannot perform a single function because the link connection state between the main body and the remote switching module is normal.

Therefore, when the main body of the TDX-10 exchange becomes incapable of processing a call, the remote exchange module also becomes incapable of processing a call and cannot provide a call processing service to a subscriber connected to the remote exchange module.

Accordingly, the present invention has been made in view of the above circumstances, and a call processing failure occurs in a host in a TDX-10 exchanger, so that the host cannot perform call processing control for the remote switching module. The purpose of the present invention is to provide a method of performing a single function of a remote exchange module when a call processing failure of a TDX-10 series exchanger is performed so that the remote exchange module performs a stand alone function. have.

In addition, another object of the present invention is that the main function of the TDX exchanger when the call processing failure is generated in the state that the call processing failure is generated in the state that the sole function is given to the remote switching module is released, the sole function of the remote switching module is recovered and the remote switching is performed. It is to provide a method for performing a single function of the remote switching module in the case of a call processing failure of the TDX-10 series exchanger to control the call processing by the main body.

According to one embodiment of the present invention for carrying out the above object, in the TDX-10 series exchanger having a remote exchange module for receiving a subscriber group located far from the main body of the TDX-10 series exchanger, the TDX- OMP in the 10-stage exchanger body detects a call processing failure, and transmits a call processing failure signal to the TLDL in the RASM via CI, TCDL, and PCM lines after a preset time elapses when detecting the call processing failure in the OMP. step,

Transmitting the call processing failure signal transmitted to the TLDL to the load state controller in the RASP, requesting the link setting unit to change the link based on the call processing failure signal, and the link setting unit In response to the request of the load state control unit, the link state is changed to a single function link, so that the RASM performs a single function. .

According to an embodiment of the present invention for realizing another object, in the TDX-10 series exchanger having a remote exchange module for accommodating a group of subscribers located far from the main body of the TDX-10 series exchanger, the TDX- OMP in the 10-stage exchanger body detects a call processing failure, and transmits a call processing failure signal to the TLDL in the RASM via CI, TCDL, and PCM lines after a preset time elapses when detecting the call processing failure in the OMP. Step, the call processing failure signal transmitted to the TLDL is transmitted to the load state control unit in the RASP, the load state control unit requesting the link change to the link setting unit based on the call processing failure signal, the link setting In addition, in response to a request of the load state control unit, the link state is changed to a single function link so that the RASM performs a single function. Determining whether the failure is released, and if the call processing failure is released, transmitting a call processing failure release signal to the TLDL in the RASM through CI, TCDL, and PCM lines, and the corresponding call processing failure transmitted to the TLDL. Transmitting a release signal to a load state controller in the RASP, requesting a link change to the link setting unit based on the call processing failure release signal, and the link setting unit to request the load state controller; In response, a link function is changed to a remote switching function link so that the RASM performs a remote switching function. A method for performing a single function of a remote switching module in case of a call processing failure of a TDX-10 series exchange is provided.

According to the present invention consisting of the above steps, if the call processing failure status is detected in the OMP of the TDX-10 exchange and the call processing failure signal is transmitted to the RASM, the load state control unit configured in the RASP of the RASM is the call processing The link setting unit requests a link state change to the link setting unit based on the failure signal, and the link setting unit changes the link state at the request of the load state control unit so that the independent function is set so that the RASM can perform the single function.

In addition, according to the present invention consisting of the above steps, when the release state of the call processing failure is detected in the OMP of the TDX-10 exchange, the call processing failure release signal is transmitted to the RASM, the load state configured inside the RASP of the RASM The control unit requests the link state change to the link setting unit based on the call processing failure release signal, and the link setting unit changes the link state at the request of the load state control unit so that the remote switching function is set so that the RASM transmits the TDX-10. Call processing is controlled by the main body of the exchange.

1 is a block diagram of a single function performing apparatus of a remote switching module when a call processing failure of a TDX-10 series exchanger to which the present invention is applied;

2 is a flowchart illustrating a process of granting a single function of a remote exchange module when a call processing failure of a TDX-10 series exchanger is performed according to an embodiment of the present invention;

3 is a flowchart illustrating a single function recovery process of a remote exchange module at the time of call processing failure of a TDX-10 series exchanger according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: CI (Control Interworking),

2: NTP (Number Translation Processor),

3: INP (Interconnection Network Processor),

4: SSP (Space Switch Processor),

5: SSW (Space Switch),

6: TCDL (RASM PCM Central Data Link);

7,22: link status detection unit,

10: host IN (Host Interconnection Network Subsystem),

20: RASM (Remote Access Switching Modual),

21: TLDL (RASM PCM Local Data Link);

23: TSW (Time Switch),

24: Analog Subscriber Interface (ASI),

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

30: RASP (Remote Access Switching Processor),

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

33: mother load state portion, 34: link state change portion,

35: link setting section.

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

1 is a block diagram of a single function performing apparatus of a remote exchange module in case of a call processing failure of a TDX-10 series exchanger to which the present invention is applied, in which reference numeral 1 denotes NTP (2), INP (3), SSP (4), CIS such as the OMP of the CCS is connected to the CIC (Inter Processor Communication) to perform the CI, 2 is a code number, station number translation, called party translation, call number translation and other numbers for translation It is NTP that performs the translation function and the routing function that executes the protective function and extended action on the call restriction on the route or the incoming resource by interworking with the network management function.

Reference numeral 3 denotes an INP that performs call processing functions such as searching for a call path, maintenance functions related to failure detection and recovery processing of a switch network, and state management such as block / unblock. It is an SSP that is directly interfaced to perform connection and disconnection of a call processing service channel, to handle a failure occurring during a space partition exchange, to test a control storage device in a related hardware unit, and to report a state of a space partition exchange. OMP of CCS connected to it performs maintenance functions such as system maintenance, test management, and operation management functions such as network management, billing, statistics, database management, etc. Do this.

Here, the OMP assumes that the call processing failure (eg, overload failure, failure of the SSW (5), etc.) occurs by collecting failures generated in each device according to the present invention, and when the call processing failure is detected, The call processing failure signal is transmitted to the TLDL 21 in the RASM 20 through the CI (1), TCDL (6), and PCM lines. Is transmitted to the TLDL 21 in the RASM 20 via the CI (1), TCDL (6), and PCM lines.

In addition, reference numeral 5 denotes an SSW configured to be a redundant structure to perform a path switching function and a space switching function between time division switches located in each ASS (not shown) under the control of the SSP 4, and 6 is a redundant structure. Configured to match the RASM 20 via a PCM line (T1 or E1), the function of multiplexing / demultiplexing the highway for the management and operation of the relay line, the matching for the space switch block, and the CI A TCDL that performs the function of inserting and extracting the IPC message in (1), and 7 is a link state detection unit that monitors the link state of the TCDL 6.

In addition, reference numeral 10 denotes the CI (1), NTP (2), INP (3), SSP (4), SSW (5), TCDL (6), and link state sensing unit 7 as shown in FIG. It is a home INS that consists of) and performs the overall function of centralized call processing.

Meanwhile, reference numeral 21 shown in FIG. 1 is a TLDL configured to have a dual structure to perform management and operation of a relay line when matching a PCM line between the RASM 20 and the INS 10, and 22 is the TLDL. 21 is a link state detection unit for monitoring the link state, and 23 is a TSW which performs an internal call processing function by performing a time slot assignment and aggregation function to a corresponding block through a time slot exchange (TSI).

Also, reference numeral 24 is an ASI that performs functions such as matching, polarity inversion, PPM transmission, etc. for general subscribers, public telephone subscribers, and PABX subscribers. DCI / DTI that performs relay line matching.

31 denotes a call processing controller which performs a call processing function in the RASM 20 based on signals from the mother station load state control unit 32 and the link setting unit 35, and 32 denotes a call processing controller. It controls the link setting state of the link setting unit 35 on the basis of the call processing failure signal transmitted, and the mother load of the mother load state unit 33 based on the load signal of the mother station transmitted through the TLDL 21. It is a load state controller to control the setting state. Reference numeral 34 is a link state changing unit for changing the link setting state of the link setting unit 35 based on the link state detected from the link state detecting unit 22, and 35 is the load state control unit 32. The link setting unit determines the link setting state (that is, link setting according to the remote switching function and the single function) by the control from the link state changing unit 34.

Further, reference numeral 30 denotes the call processing control unit 31, the load state control unit 32, the mother station load state unit 33, the link state change unit 34, the link setting unit 35, and the RASM 20. It is a RASP to perform the overall functions.

Reference numeral 20 is composed of the TLDL 21, the link state sensing unit 22, the TSW 23, the ASI 24, the DCI / DTI 25, and the RASP 30, and the main body of the TDX-10 switch. It is a RASM that performs its own call processing operation in case of performing a call processing operation under the control of a link failure or call processing failure in the TDX-10 switch.

Next, with reference to the accompanying Figures 2 and 3 will be described in detail the operation according to an embodiment of the present invention having the above configuration.

2 is a flowchart illustrating a process of granting a single function of a remote exchange module when a call processing failure of a TDX-10 series exchanger is performed according to an embodiment of the present invention, and FIG. 3 is a TDX- according to an embodiment of the present invention. This is a flowchart for explaining the procedure of single function recovery of remote exchange module in case of call processing failure of 10 series exchange.

As shown in FIG. 2, if the TDX-10 exchange is overloaded or a failure occurs in the SSW 5, the call processing failure generated in the host in the OMP of the TDX-10 exchange is detected (step 40). The OMP performs a clocking operation (step 42), and judges whether the time indicated has passed a preset time, for example, 5 minutes (step 44).

Here, if 5 minutes have elapsed (step YES in step 44) after the call processing failure occurs in step 40 (YES in step 44), the OMP transmits a call processing failure signal to CI (1), TCDL (6) and PCM lines. Is transmitted to the TLDL 21 of the RASM 20 (step 46).

Subsequently, the call processing failure signal transmitted to the TLDL 21 is applied to the load state control unit 32 of the RASP 30, and the load state control unit 32 is based on the call processing failure signal. 35, a predetermined control signal is applied to request a link state change (step 48).

The link setting unit 35, which has been requested to change the link state from the load state control unit 32, changes the link state set therein by setting the link that has been set as the remote switching function as its sole function (step). 50).

As the link state is changed in the link setting unit 35, the call processing control unit 31 matches an analog subscriber matched to the ASI 24 and the DCI / DTI 25 regardless of call processing control from the mother station. In response to a call connection request from a relay line subscriber, the switch state of the TSW 23 is controlled to perform an independent function, thereby calling itself to subscribers connected to the ASI 24 and the DCI / DTI 25. Provide a service (step 52).

On the other hand, after giving the RASM 20 a single function through the above-described process, the OMP determines whether the call processing failure generated in step 40 has been released (step 60).

Therefore, the operator checks the abnormal state of the SSW (5) and the SSW (5) is returned to the normal state or subscribers subscribed to the mother station of the TDX-10 exchange terminates the call to overload the TDX-10 If the call processing failure generated in step 40 of FIG. 2 described above is released (YES in step 60), the OMP transmits a call processing failure release signal through the CI (1), TCDL (6), and PCM lines. Transmit to TLDL 21 in RASM 20 (step 62).

Subsequently, the call processing failure release signal transmitted to the TLDL 21 via the PCM line is applied to the load state control unit 33 in the RASP 30, and the load state control unit 33 releases the call processing failure. On the basis of the signal, a predetermined control signal is applied to the link setting unit 35 to request a link state change (step 64).

The link setting unit 35, which has been requested to change the link state from the load state control unit 32, changes the link state set therein by setting the link set as a single function therein to the remote switching function (step). 66).

Thus, as the sole function assigned to the RASM 20 is recovered, the RASM 20 is connected to the ASI 24 and the DCI / DTI 25 by call processing control of the TDX-10 switch. Provide call processing service (step 68).

That is, the RASM 20 in which the link is set to the remote switching function is connected to the ASI 24 based on the mother load state set by the call processing controller 31 in the RASP 30 in the mother load state unit 33. Call processing control is performed on the DCI / DTI 25 and the TSW 23 to provide call processing services to the subscribers connected to the ASI 24 and the DCI / DTI 25.

As described above, according to an embodiment of the present invention, if a call processing failure occurs in a host in the TDX-10 series exchange, the host cannot perform call processing control for the remote switching module. The remote switching module automatically performs a stand alone function to perform a call processing function by itself, thereby providing a normal call processing service to subscribers connected to the remote switching module.

In addition, when the call processing failure is released, the TDX-10 switch automatically performs call processing control of the remote switching module, thereby effectively utilizing the remote switching module.

Claims (2)

In the TDX-10 series exchanger, which is equipped with a remote exchange module 20 for accommodating a group of subscribers remotely from the main body of the TDX-10 series exchanger, OMP in the body of the TDX-10 series exchanger detects a call processing failure; Transmitting a call processing failure signal to the TLDL 21 in the RASM 20 through a CI (1), a TCDL (6), and a PCM line after a preset time elapses when the call processing failure is detected by the OMP; Transmitting the corresponding call processing failure signal transmitted to the TLDL 21 to the load state controller 32 in the RASP 30; Requesting, by the load state control unit 32, to change the link to the link setting unit 35 based on the call processing failure signal; TDX-10 characterized in that the link setting unit 35 is a step of changing the link state to a single function link in response to a request of the load state control unit 32, the RASM 20 performs a single function. How to perform single function of remote exchange module in case of call processing failure of series exchange. In the TDX-10 series exchanger, which is equipped with a remote exchange module 20 for accommodating a group of subscribers remotely from the main body of the TDX-10 series exchanger, OMP in the body of the TDX-10 series exchanger detects a call processing failure; Transmitting a call processing failure signal to the TLDL 21 in the RASM 20 through a CI (1), a TCDL (6), and a PCM line after a preset time elapses when the call processing failure is detected by the OMP; Transmitting the corresponding call processing failure signal transmitted to the TLDL 21 to the load state controller 32 in the RASP 30; Requesting the link setting unit 35 to change the link based on the call processing failure signal by the load state control unit 32; The link setting unit 35 changing the link state to a single function link in response to a request of the load state control unit 32 to perform the single function of the RASM 20; Determining whether the call processing disorder generated in the OMP is released; If it is determined that the call processing failure is released, transmitting the call processing failure release signal to the TLDL 21 in the RASM 20 through the CI (1), TCDL (6), and PCM lines; Transmitting the call processing failure release signal transmitted to the TLDL 21 to the load state control unit 32 in the RASP 30; Requesting, by the load state control unit 32, to change the link to the link setting unit 35 based on the call processing failure release signal; TDX, characterized in that the link setting unit 35 changes the link state to a remote switching function link in response to a request of the load state control unit 32, the RASM 20 performs a remote switching function. -10 How to perform single function of remote exchange module in case of call processing failure of series exchange.