KR20000065925A - Multiplexing method of signalling No.7 link traffic at traveling of signalling No.7 message in public switched telephone network - Google Patents

Abstract

PURPOSE: A method for multiplexing No.7 signaling link traffics in case of transferring a signaling message in the PSTN exchange is provided to distribute No.7 signaling link traffics in case of transferring a signaling message properly and to maintain traffic performance uniformly to the utmost in the event of abnormal condition. CONSTITUTION: If an upper level user transfers data to a signaling message control processor, the signaling message control processor confirms whether a signaling link to transfer the data exists in a routing table(S5). In case that signaling link exists but the data belongs to a signaling link range of another signaling message control processor, a management part transmits the routing table of another signaling message control processor to a telephone user part and an ISDN user part and transfers a new map table to a signaling link set management part, a signaling link management part and a signaling route set management part. Also the management part transmits a signal that a signaling terminal status processing part should check a signaling message the second layer function board assembly part connected with the signaling message control processor(S6).

Description

Multiplexing method of signaling No.7 link traffic at traveling of signaling No.7 message in public switched telephone network

The present invention relates to a multiplexing method of No. 7 signaling link traffic during signal message delivery in a public switched telephone network switch. In particular, the present invention relates to a method for transmitting a signal message of a telephone user part, an ISDN user part, and a signal connection control part in a public switched telephone network switch. The present invention relates to a multiplexing method for properly distributing traffic on a signal link and maintaining traffic performance as constant as possible in case of an error.

In the conventional No.7 common line signaling system, all the signaling messages are transmitted on a unique signal link, and then the signal state is known, and when deactivated, the signaling message is transmitted again. There was no distribution function.

Here, the common line signaling method refers to a method in which a signaling message is separated from the traffic, and thus the signaling message moves through a link separated from the traffic or a prescribed pulse code modulation time slot.

However, in the above-described signaling message delivery method in the conventional public switched telephone network switch, there is no function of properly distributing traffic during signal message transmission on the signal link, and as the number of subscribers increases, the performance of the signal message control processor decreases due to congestion and saturation. There was a problem that the state occurs.

In addition, since all the signal messages are transmitted through a unique signal link, and the signal state is known thereafter, when an error occurs in the signal message control processor, there is a problem of transmitting the signal message again.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to appropriately distribute traffic on a signal link by multiplexing No. 7 internal traffic routes in a public switched telephone network switch, and a signal message control processor. Multiplexing method of No.7 signaling link traffic when signaling message is delivered in public switched telephone network exchange that maintains signal link to keep sending and receiving signal message even in abnormal state of signal or signal link. To provide.

In order to achieve the above object, the multiplexing method of No.7 signal link traffic during signal message transmission in a public switched telephone network switch according to the present invention comprises the steps of: Step 1; The signal link set management unit, the signal link management unit, the common line signal data initialization and recovery unit, and the management unit of the signal connection control unit are loaded in the signal message control processor unit, and each processor number (ID) notified by the internal network management unit of the common line signaling device. Receiving a second step; A third step of informing each signal message control processor unit of the signal message processing unit and the data processing unit of the No. 7 signal system signal connection control unit that the signal message control processor unit has activated it; The management unit of the signal message control processor unit creates a child process, and the child process includes a routing table, a signal message second layer function board assembly, and four signal message second layer function board assemblies using an internal database. Inputs an initial routing containing the address of the signal message hardware to the signal message processing unit, and the management unit of the signal message control processor unit generates a map table by collecting messages of the activated signal message control processor unit, and generates the map table in the child process. Sending the collected information to the management unit of the message transfer unit; A fifth step of determining whether a signal link to which the data is to be transmitted exists in the routing table when the higher level user transmits data in the order of the signal message control processor to the signal message control processor; When the signal link exists in the fifth step, but the data belongs to the signal link range of the other signal message control processor unit, the management unit of the signal message control processor unit is different from the signal message control processor unit of the telephone user unit and the ISDN user unit. Transmitting a routing table, transmitting a new map table to the signal link set management unit, the signal link management unit, and the signal route set management unit, and a new signal message control processor unit is activated to the signal terminal state processing unit. A sixth step of transmitting a signal to check a message second layer function board assembly; A seventh step of detecting, by a management unit of the signal message control processor unit, a state change of the specific signal message control processor unit; If the state change in the seventh step is an abnormal occurrence or inactivation by the operator of the signal message control processor unit, the management unit of the signal message control processor unit updates the map data of the specific signal message control processor unit in which the abnormality is generated or deactivated, An eighth step of transferring a new routing table reflecting the change of the message control processor to another signal message control processor; A ninth step of checking whether the routing table has been received by another signal message control processor, and if receiving the routing table, receiving the routing table if not received within a predetermined time; And a tenth step of the management unit of the signal message control processor unit transmitting the new map table due to the state change to the signal link management unit, the signal route set management unit, and the signal terminal state processing unit.

1 is a functional block diagram showing a configuration of hardware representing a No. 7 telephone control subsystem in a public switched telephone network switch;

2 is a functional block diagram showing the configuration of No. 7 software in a multi-switched telephone network switch;

3 is an operation flowchart illustrating a multiplexing method of No. 7 signal link traffic when a signaling message is delivered in a public switched telephone network switch according to an embodiment of the present invention;

<Description of the code | symbol about the principal part of drawing>

100: trunk line telephone control subsystem

110: telephone user unit

120: ISDN user part

200: No.7 telephone control subsystem main processor

210: internal network management

211: signal terminal state processing unit

212: common network signaling device internal network management unit

213: common line signal data initialization and recovery unit

220: management unit of the signal connection control unit

230: management unit of the message delivery unit

231: signal route set management unit

232: signal link set management unit

233: signal link management unit

300: No.7 telephone control subsystem subprocessor (management unit of signal message control processor unit)

310: message processing unit of the signal connection control unit

311: Data processing unit of the No.7 signal connection control unit

312: Routing control part of No.7 signal connection control part

320: signal message processing unit

400: message delivery unit

410: signal message control processor

411: inter-processor and gateway board assembly

412: No.7 processor board assembly

420: No.7 Signaling Hardware

421: signal message layer 2 function board assembly

Hereinafter, a method for multiplexing No. 7 signal link traffic during signal message transmission in a public switched telephone network switch according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a functional block diagram showing the configuration of hardware representing the No. 7 telephone control subsystem in a public switched telephone network switch, and shows the configuration of a message transfer part 400.

The message transfer part 400 is composed of a signal message control processor 410 and a No. 7 signaling hardware unit 420, and a No. 7 signal in accordance with the classification on the No. 7 protocol layer. It performs a first layer, which is an electrical and physical connection function for transmitting and receiving messages, and a second layer protocol function, for reliable transmission and reception of signal messages, and performs third layer protocol processing of signal messages.

The signal message control processor 410 mounted in the message transfer part 400 includes an inter-processor, a gateway board assembly 411, and a No. 7 processor board assembly 412. When the user wants to communicate with the data link layer, which is the second layer, the relay serves as a relay.

In addition, the No.7 signaling hardware unit 420 mounted in the message transfer part 400 is composed of four signal message second layer function board assembly units 421, and is connected via a subhighway. It is matched with a time division switch and link unit, and functions as a second layer message transfer unit.

Fig. 2 is a functional block diagram showing the configuration of No. 7 software in a public switched telephone network switch. The configuration of No. 7 software in a public switched telephone network switch is a telephone line telephone control subsystem (Telephony Control Subsystem-Trunk) 100. ), No. 7 telephone control subsystem main processor (Telephony Control Subsystem-7 Main Processor) (200), the signal message control processor unit management unit 300.

The trunk line telephone control subsystem 100 is composed of a telephone user part 110 and an ISDN user part 120 and serves to provide a trunk line interface.

In addition, the telephone user unit 110 mounted in the trunk line telephone control subsystem 100 is a function unit for higher service, and serves to deliver a message through a relay line and a signal link with the telephone user.

Meanwhile, the ISDN user unit 120 mounted in the trunk line telephone control subsystem 100 is a function unit for higher service, and serves to deliver a message through a relay line and a signal link with the ISDN user.

In addition, the No. 7 telephone control subsystem main processor 200 is composed of an internal network management unit 210, a management unit 220 of the signal connection control unit, and a management unit 230 of the message transfer unit, the call does not require real-time processing It is responsible for processing, number translation, exchange control, and maintaining and operating the system.

On the other hand, the internal network management unit 210 mounted in the No. 7 telephone control subsystem main processor 200 includes a signal terminal state processing unit 211, a common line signaling device internal network management unit 212, and common line signal data initialization. And a recovery unit 213, which initializes and restores network data and signal message control processor 410, and manages signal state and signal terminal state. .

In addition, the signal terminal state processing unit 211 mounted in the internal network management unit 210 serves to check the signal message second layer function board assembly unit 421 to transmit the signal message.

On the other hand, the common line signaling device installed in the internal network management unit 210, the internal network management unit 212, between the elements that process each common line signal protocol in the No.7 telephone control subsystem and the multiple distributed users Since it manages the communication network and manages the internal traffic flow of the entire common line signaling system, it transmits such routing data to inform the user when the service is started and informs the number of the processor when the system is running.

In addition, the common line signal data initialization and recovery unit 213 mounted in the internal network management unit 210 initializes network management data at system startup, and performs a message transfer unit 400 managed by a database and will be described later. No.7 telephone control subsystem subprocessor (hereinafter referred to as SCCP) network data including a management unit 220 of the signal connection control unit and a message processing unit 310 of the signal connection control unit (described below). 300).

On the other hand, the management unit 220 of the signal connection control unit mounted in the No. 7 telephone control subsystem main processor 200 not only manages the signal point of the signal network processing the SCCP and the state of the subsystem, but also the SCCP routing. It also manages path state.

In addition, the management unit 230 of the message transfer unit mounted in the No. 7 telephone control subsystem main processor 200 includes a signal route set management unit 231, a signal link set management unit 232, and a signal link management unit 233. It manages signaling links, manages link sets, and manages routes.

On the other hand, the signal route set management unit 231 mounted in the management unit 230 of the message transfer unit manages and controls the states of the route and the end point of the signal network, and receives a map table relating to the signal message control processor unit 410. Play a role.

In addition, the signal link set management unit 232 mounted in the management unit 230 of the message transfer unit manages and controls the state (available and unavailable) of the signal link and updates the link state when a link failure or management prohibition occurs. Do it.

On the other hand, the signal link management unit 233 mounted in the management unit 230 of the message transmission unit, the setting of the signal network facilities and maintenance of these facilities in the event of an error, and the data management function of the signal link and the signal terminal, signal link It is responsible for all the tests.

In addition, the management unit 300 of the signal message control processor unit is composed of a message processing unit 310 and a signal message processing unit 320 of the signal connection control unit, which detects, analyzes, and processes a signal line system requiring real time processing. Play a role.

On the other hand, the message processing unit 310 of the signal connection control unit mounted on the management unit 300 of the signal message control processor unit, the data processing unit 311 of the No.7 signal connection control unit, the routing control unit 312 of the No.7 signal connection control unit It is responsible for the overall procedure for transmitting and receiving SCCP data, and plays a role of modifying information of other stations or subsystems belonging to other stations in relation to the management unit 220 of the signal connection control unit.

In addition, the data processing unit 311 of the No. 7 signal connection control unit mounted on the message processing unit 310 of the signal connection control unit is composed of pure software only, the signal message processing unit 320 to be described later and the No. 7 signal to be described later The routing controller 312 of the connection controller plays a role of providing a network service data transmission function by interworking with the data processor 311 of the No. 7 signal connection controller without setting signal connection in the common line signal network.

Meanwhile, the routing controller 312 of the No. 7 signal connection controller mounted on the message processor 310 of the signal connection controller includes a data processor 311 of the No. 7 signal connection controller and a signal message processor 320 described later. ) To determine the destination from the transmitted data.

In addition, the signal message processing unit 320 mounted on the management unit 300 of the signal message control processor unit may include a user unit (including the telephone user unit 110 and the ISDN user unit 120) of the originating signal point and the final incoming signal point. It reliably delivers signaling messages to the system, and inputs, deletes, and updates I / O routing tables.

Next, a method of multiplexing No. 7 signal link traffic during signal message transmission in a public switched telephone network switch according to an embodiment of the present invention will be described.

FIG. 3 is an operational flowchart illustrating a method for multiplexing No. 7 signal link traffic when a signaling message is delivered by a public switched telephone network switch according to an embodiment of the present invention, where S represents a step.

Hereinafter, an initial activation process of the multiplexing method of No. 7 signal link traffic when transmitting a signaling message in a public switched telephone network switch will be described in detail with reference to FIG. 3.

First, the common line signal device internal network manager 212 initializes internal data and a database when the system is driven (S1).

Thereafter, the signal link set management unit 232, the signal link management unit 233, the common line signal data initialization and recovery unit 213, and the management unit 220 of the signal connection control unit are loaded in the signal message control processor unit 410. In operation S2, the processor 130 receives the processor number ID, which the common line signaling device internal network manager 212 notifies.

Then, each signal message control processor 410 notifies the signal message processor 320 and the data processor 311 of the No. 7 signal system signal connection controller that it is activated (S3).

Then, the management unit 300 of the signal message control processor unit creates a child process, and the child process uses the internal database to route the table and the signal message second layer function board assembly unit 421 and four signals. An initial routing containing the address of the No. 7 signaling hardware unit 420 including the message second layer function board assembly unit 421 is input to the signal message processing unit 320, and the management unit 300 of the signal message control processor unit 300 is input. ) Collects the messages of the activated signal message control processor 410 to generate a map table, and sends the map table to the management unit 230 of the message transfer unit together with the information collected by the child process (S4).

At this time, if the upper user delivers the data to the signal message control processor 410 in the order of the signal message control processor 410, the signal message control processor 410 determines that the signal link to which the data is to be transmitted is a routing table. Check whether it exists in (S5).

When the signal link exists in the fifth step, but the data belongs to the signal link range of the other signal message control processor 410, the management unit 300 of the signal message control processor unit is connected to the telephone user unit 110. The routing table of the other signal message control processor 410 is transmitted to the ISDN user unit 120, and a new map table is sent to the signal link set management unit 232, the signal link management unit 233, and the signal route set management unit 231. The new signal message control processor 410 is activated to the signal terminal state processor 211, so that the signal message second layer function board assembly unit 421 connected to the corresponding signal message control processor 410 is checked. The signal is transmitted (S6).

Thereafter, the management unit 300 of the signal message control processor unit detects a state change of the specific signal message control processor 410 (S7).

If the state change in the seventh step is an abnormal occurrence of the signal message control processor unit 410 or is inactivated by the operator, the management unit 300 of the signal message control processor unit may generate a specific signal message control processor unit in which an abnormality is generated or deactivated. The map data of 410 is updated, and a new routing table reflecting the change of the specific signal message control processor 410 is transferred to another signal message control processor 410 (S8).

Thereafter, if the routing table checks whether the other signal message control processor 410 has received the signal, and proceeds to the next step, if not received within a predetermined time, the routing table is received again (S9).

Then, the management unit 300 of the signal message control processor unit transmits a new map table according to the state change to the signal link management unit 233, the signal route set management unit 231, and the signal terminal state processing unit 211, thereby failing or inactivating. The traffic of the signal message control processor 410 is switched to the available signal message control processor 410 (S10).

On the other hand, if the signal link is not allocated in the fifth step, take measures to discard or return the data (S6 ').

In addition, if a signal link exists as a result of the check in the fifth step, and the signal message control processor 410 confirms that it is within the range of the accessible signal link, the second signal message to be described below connected to the lower end of its layer. The data is transmitted to the layer function board assembly unit 421 (S6 '').

In addition, if the state change in the seventh step is made available by the signal message control processor unit 410 having failed or is activated by an operator, the map data of the activated signal message control processor unit 410 is updated, and the specific signal message control is performed. After the new routing table reflecting the change in the processor unit 410 is transferred to the other signal message control processor unit 410, the process proceeds to the ninth step (S8 ').

As described above, according to the multiplexing method of No.7 signaling link traffic during signal message delivery in the public switched telephone network switch according to the present invention, the traffic in the signal link is appropriately distributed by multiplexing the No.7 internal traffic route in the public switched telephone network switch. In addition, there is an excellent effect that an efficient and stable exchange service can be provided by maintaining the signal link so that the signal message can be continuously transmitted and received even in an abnormal state of the signal message control processor or the signal link.

Claims (4)

A method for multiplexing No.7 signaling link traffic in a signaling message forwarding in a public switched telephone network switch having a trunk line telephone control system, a No.7 telephone control subsystem main processor, and a signaling message control processor unit management unit, A first step of initializing the internal data and the database when the common line signaling device internal network manager operates the system; The signal link set management unit, the signal link management unit, the common line signal data initialization and recovery unit, and the management unit of the signal connection control unit are loaded in the signal message control processor unit, and each processor number (ID) notified by the internal network management unit of the common line signaling device. Receiving a second step; A third step of informing each signal message control processor unit of the signal message processing unit and the data processing unit of the No. 7 signal system signal connection control unit that the signal message control processor unit has activated it; The management unit of the signal message control processor unit creates a child process, and the child process includes a routing table, a signal message second layer function board assembly, and four signal message second layer function board assemblies using an internal database. Inputs an initial routing containing the address of the signal message hardware to the signal message processing unit, and the management unit of the signal message control processor unit generates a map table by collecting messages of the activated signal message control processor unit, and generates the map table in the child process. Sending the collected information to the management unit of the message transfer unit; A fifth step of determining whether a signal link to which the data is to be transmitted exists in the routing table when the higher level user transmits data in the order of the signal message control processor to the signal message control processor; When the signal link exists in the fifth step, but the data belongs to the signal link range of the other signal message control processor unit, the management unit of the signal message control processor unit is different from the signal message control processor unit of the telephone user unit and the ISDN user unit. Transmitting a routing table, transmitting a new map table to the signal link set management unit, the signal link management unit, and the signal route set management unit, and a new signal message control processor unit is activated to the signal terminal state processing unit. A sixth step of transmitting a signal to check a message second layer function board assembly; A seventh step of detecting, by a management unit of the signal message control processor unit, a state change of the specific signal message control processor unit; If the state change in the seventh step is an abnormal occurrence or inactivation by the operator of the signal message control processor unit, the management unit of the signal message control processor unit updates the map data of the specific signal message control processor unit in which the abnormality is generated or deactivated, An eighth step of transferring a new routing table reflecting the change of the message control processor to another signal message control processor; A ninth step of checking whether the routing table has been received by another signal message control processor, and if receiving the routing table, receiving the routing table if not received within a predetermined time; And a tenth step of the management unit of the signaling message control processor unit transmitting the new map table according to the state change to the signal link management unit, the signal route set management unit, and the signal terminal state processing unit. Multiplexing Method No.7 Signaling Link Traffic. The method of claim 1, If the signal link is not allocated in the fifth step, taking the action of discarding or returning the data, and then proceeding to the seventh step, and transmitting a signaling message to the public switched telephone network switch. Multiplexing Method No.7 Signaling Link Traffic. The second message signal layer connected to the lower end of the layer if the signal link is present and the range of the signal link that can be accessed by the signal message control processor itself. And a 6 &quot; step proceeding to the seventh step after the transfer to the functional board assembly unit. The method of claim 1, If the state change in the seventh step is available to the failed signal message control processor unit or is activated by the operator, update the map data of the activated signal message control processor unit, and change the new routing table reflecting the change of the specific signal message control processor unit. And a eighth step of proceeding to the ninth step after the signal message control processor transfers the signal message to the processor.