KR20020074031A - Method of Occupying Trunk in Intelligent Peripheral - Google Patents

Abstract

PURPOSE: A method for occupying a trunk line in an intelligent peripheral system is provided to minimize loss by an outgoing occupation by performing a control function about an outgoing call of a both way trunk line and limiting the occupation of an incoming call at a uniform rate. CONSTITUTION: If an SSP(Service Switching Point) A attempts an outgoing occupation to an SSP B(S71), it is judged whether the outgoing occupation exceeds an outgoing occupation rate(S72). If the outgoing occupation does not exceed an outgoing occupation rate, the outgoing occupation and the call process are continuously performed(S74). The number of outgoing occupation is increased(S75). When the outgoing occupation is released(S76), the number of outgoing occupation is decreased(S77) and it is an idle state(S78).

Description

Method of Occupying Trunk Line in Intelligent Network System {Method of Occupying Trunk in Intelligent Peripheral}

The present invention relates to a relay line occupancy method in an intelligent network system, and in particular, to control the relay line occupancy for the outgoing relay call of the two-way relay line in the intelligent network system to minimize the loss of the incoming relay call due to the outgoing occupation. A relay line occupancy method in an intelligent network system.

In general, an intelligent peripheral system provides subscribers with access to the network, as shown in FIG. 1, and a switching function, call control function, call control agent, and service switching function for intelligent network call connection. And an SSP (1, Service Switching Point; < RTI ID = 0.0 > 1 < / RTI > " SSP ") and a call control function that perform a service function and an intelligent network service control function and a database in connection with the SSP 1 to handle additional services or subscriber requests SCP (3, Service Control Point; hereinafter referred to as 'SCP') that performs management functions, customized announcement and voice recognition, speech synthesis, voice recording, DTMF (Dual Tone Multi Frequency) collection, IP (2, Intelligent Peripheral; hereinafter referred to as 'IP') that has special resources such as protocol change and fax document processing, and functions to provide flexible interaction between subscriber and intelligent network. By connecting the No.7 common channel signaling system (4) to remove the simple telephone call associated with the service control complex, hierarchically, to allow the generation management to more quickly and easily to new services.

Intelligent network service is a trend of increasing service types and functions due to various needs of subscribers and network operators and the development of No.7 common line signaling system (4), which is called No.7 Signaling System. It is a common signaling system standardized by the International Telecommunication Union-Telecommunication Standardization Sector (ITU-T) of the International Telecommunication Union, and provides various control signals for providing call connection between subscribers and providing various communication services or operating and managing communication networks. It is a signaling method that consists of a signal transmission unit that distributes signal transmission control, error correction, and security measures of a signal network to enhance its general purpose, and a user unit that is individually designed according to application fields such as telephone exchange and data exchange. have.

In addition, the signal processing speed is improved by using a separate signal link for separating and transmitting only a corresponding control signal separately from a communication line for transmitting voice or data, and providing various signal contents for a calling party and a called party. Data can be processed into one signal unit, and the length of the corresponding signal unit can be set variably according to the data amount.

As shown in Fig. 2, the general structure of the No. 7 signal network is composed of a signaling point (SP) and a signaling link (SL).

In this configuration, the signaling point is to send, receive, or transmit a signaling message generated by a user, and includes a signaling end point (SEP) for transmitting or receiving a signaling message and a pair of signals. There is a Signaling Transfer Point (STP) that carries messages from one link to another. The SEP includes an operating point (OP) that generates a signaling message and a destination point (DP) that is a destination of the signaling message.

On the other hand, the signal link is a logical information transmission path connecting the corresponding signal points, and the set of such signal links is called a signaling link set (LS), and a path for delivering a message to the signal point is a signal route ( Called Signaling Route (SR), a set of signal routes defined for carrying traffic to one destination is called a Signaling Route Set (RS).

As described above, the No. 7 signal network is composed of a signal point, a signal link, a signal link set, and specification data such as a signal route, and a signal link set that directs a signal message generated by an origin point to a destination point. Call routing and service requests are performed by performing routing functions delivered over a specific signal link.

Assuming that all signal link sets in the No. 7 signal network are available, each signal point of the signal network has an internal protocol structure as shown in Fig. 3, and the No. 7 signal network has a data user part (Data User). ISDN user considering the correspondence between various DUP), telephone user part (TUP) in charge of processing of telephone signal and call exchange connection control, and various services of Intergrated Services Digital Network (ISDN) An ISUP (ISDN User Part) and a Signaling Connection Control Part (SCCP) that enable the transmission of various signals and data other than the normal line-compatible control signals are provided in the MTP (Message Transfer Part) which is a message transfer part. Connected.

In Figure 3, TC (Transaction Capabilities) performs a question and answer processing function to the SCCP user unit. Here, the signal point performing only the signal transfer function may not have a protocol such as SCCP and ISUP.

As described above, the MTP is a function unit that distributes signal transmission control, error correction, and security processing of a signal network in order to increase versatility, and reliably delivers No.7 signal related messages transmitted and received between signal points. As shown in Fig. 4, the signal message processor 1 performs signal traffic transmission and user part distribution functions, and all the specifications (signal points, signal links, signal links) belonging to the signal network for reliable signal message transmission. And a signal network manager 5 which efficiently maintains the correspondence between the specifications and manages the signal network shape while efficiently using the sets and signal routes).

In this configuration, the signal message processing unit 1 includes a message discriminating unit 2, a message distributing unit 3, and a message routing unit 4, wherein the message discriminating unit 2 receives the received message. The message is analyzed by checking whether the final destination of the message is its own country, the message distribution unit 3 delivers the message to the user part of the local station, and the message routing unit 4 transmits the neighbor signal to transmit the message to the final destination. Route to the signal route associated with the point.

On the other hand, the signal network manager 5 includes a signal traffic manager 6, a signal link manager 7 and a signal route manager 8, but the signal traffic manager 6 is not available. When it is in a state, the signal traffic is switched to another link or route or temporarily slowed down, the signal link management unit 7 manages the restoration, activation or disabling of the link, and the signal route management unit 8 relates to the signal route state. Information is reliably exchanged between signal points in the signal network.

The relay line occupancy method in the intelligent network system connected to the No. 7 signal network as described above will be described with reference to the flowchart of FIG. 5.

First, if an attempt is made to occupy a relay from another switching system to another switching system (step S51), it is determined whether an idle relay line exists in the relay line between the switching system and the other switching system (step S52). If there is no idle relay line in the relay line to pass through, the outgoing call fails and a call release procedure is performed (step S53). However, if there is an idle relay line in the relay line to pass through, it occupies the outgoing call and continues the call processing (step S54).

When the call processing ends, the outgoing call is released (step S55), the outgoing channel is released (step S56), and then idle (step S57).

As described above, in the intelligent network system, in case of a bidirectional relay line, an idle relay line is occupied sequentially or randomly, and when the relay line is occupied according to the corresponding procedure, an incoming call must be processed first as in the case of a large-capacity IP. In the case of the system, there was a problem in that the incoming call could not be occupied by the use of the outgoing call.

The present invention is to solve the general problems as described above, the object is to perform a control function for the outgoing relay call of the two-way (Both Way) relay line in the intelligent network system by limiting the occupancy of the incoming relay call to a certain ratio, Minimize losses due to outgoing coverage.

1 is a diagram illustrating a connection relationship between network elements of a general intelligent network.

2 is a schematic configuration diagram of a general No. 7 signal network.

3 is a diagram showing a schematic structure of a general No. 7 signaling scheme.

4 is a block diagram showing the configuration according to MTP in FIG.

5 is a flowchart illustrating a relay line occupation method in a conventional intelligent network system.

6 is a diagram illustrating a relay line occupying structure in an intelligent network system according to an embodiment of the present invention.

7 is a flowchart illustrating a relay line occupation method in an intelligent network system according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: SSP A

20: SSP B

30: relay line

Relay line occupancy method in the intelligent network system of the present invention for achieving the above object is a process of attempting to occupy the relay relay in both directions; Determining whether the outgoing occupation rate is exceeded; If the outgoing occupancy rate is not exceeded, the outgoing occupancy and call processing is performed.

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

In the intelligent network system according to the embodiment of the present invention, as shown in FIG. 6, the relay line occupying structure is a resource shared between the two exchanges, and the respective exchanges between the SSP A 10 and the SSP B 20 are shared. When it is necessary to occupy the relay line 30 as the call proceeds, the relay line 30 is occupied sequentially or arbitrarily according to the respective algorithm.

As described above, the outgoing relay occupation method of the bidirectional relay line 30 according to an embodiment of the present invention will be described with reference to the flowchart of FIG.

First, when the outgoing possession is attempted from the SSP A 10 to the SSP B 20 (step S71), it is determined whether the outgoing coverage ratio is exceeded (step S72). Here, suppose that the total number of bidirectional relay lines 30 is N, and the ratio of outgoing relays is to be limited to R.

m = N * R

m: Outgoing limit

N: total number of bidirectional relay lines

R: Outgoing ratio

If the current relay occupancy is marked with c and the i-th relay request occurs, the following procedure is performed.

If i is larger than m, a call failure procedure is performed (step S73), and if i is not larger than m, the outgoing call is occupied and call processing is continued (step S74). Then, the number of outgoing relay occupations is increased (step S75).

Subsequently, when the outgoing relay occupation is released (step S76), the number of outgoing relay occupations is decreased (step S77), and then idle (step S78).

In the same way as described above, when the ratio is changed using the command, the outgoing occupation rate is accepted and m is N * R / 100 if it is in the range of 0 to 100.

Therefore, if the outgoing occupancy ratio is 0, all are used as incoming calls, and if it is 100, it is used in the same manner as the conventional bidirectional relay occupancy method.

When outgoing call is attempted If the relay line 30 is a two-way relay, the function is implemented to perform call processing by checking the outgoing ratio and confirming that the number of attempted occupancy is within a certain ratio defined by the operator. do.

If the ratio is not exceeded, outgoing calls will be attempted to continue the call processing and the number of outgoing calls will be increased from an administrative point of view. The occupancy rate and relay occupancy rate are managed by the database corresponding to the route.

If a certain ratio is exceeded, call control is executed so that an outgoing call can be generated within a certain ratio by failing the outgoing call.

Thereafter, when the outgoing call performs the release procedure, the number of outgoing call occupied is reduced, so that a certain percentage of the call is maintained.

Although the preferred embodiments of the present invention have been described in detail above, it will be understood by those skilled in the art that the present invention may be modified or modified in various ways. Therefore, changes of the embodiments of the present invention will not be able to escape the technical scope of the present invention.

As described above, the present invention minimizes the loss of the incoming call occupied by the outgoing call by performing a control function for the relay line occupancy for the originating call of the two-way relay route in the intelligent network system.

Accordingly, the resource allocation is controlled by adjusting the relay line occupancy rate only in the case of bidirectional relaying without changing the protocol.

Claims (2)

Attempting to occupy the outgoing relay of the bidirectional relay line; Determining whether the outgoing occupation rate is exceeded; Relay line occupancy method in the intelligent network system, characterized in that the outgoing occupancy rate and call processing if the outgoing occupancy ratio is not exceeded. The method according to claim 1, Increasing the number of outgoing occupancy in the process of performing outgoing occupancy and call processing if the outgoing occupancy ratio is not exceeded; Releasing the outgoing call; Relay line occupancy method in an intelligent network system comprising the step of reducing the number of outgoing relay occupancy.