KR20000004109A - Call cutoff control method of full-electronic switching system - Google Patents

Abstract

PURPOSE: A call cutoff control method of a full-electronic switching system is provided to cut off one speech path of trunk line forcedly and enable outgoing/incoming service subscribers to have an urgent communication with each other. CONSTITUTION: When all speech paths(50,...) of trunk line formed by using an operator position system(30, OPS) between a plurality of outgoing service subscribers(10,...) and incoming service subscribers(40,...) in other countries are busy, if a specific outgoing service subscriber(1) requires an urgent communication to the OPS(30), one of the speech paths which has been used for the longest time among a plurality of outgoing/incoming service subscribers(10..., 40...) is cut off forcedly. Thereby, specific outgoing/incoming service subscribers(1, 4) are able to have an urgent communication with each other.

Description

How to control arc cutting of electronic exchanger

The present invention relates to a call disconnection control method of an electronic switchboard, and in particular, when a trunk line is all in use by a plurality of calling / receiving subscribers, the user arbitrarily cuts any one relay line and uses it urgently. The present invention relates to a call cutting control method for connecting an emergency call between a called party and a called party.

In general, when an originating subscriber wants to talk to an incoming subscriber located in an exchange in another country, such as a DTS-2000, the calling party calls an operator position system (hereinafter, abbreviated as OPS). For example, when OPS notifies the telephone number of the called subscriber located in the foreign exchange to be called, the OPS calls the called subscriber of another country and then forms a relay line between the calling / receiving subscribers so that the call can be made between the two.

However, since the number of relay line calls formed by the OPS is limited, when a large number of callers / received subscribers talk at the same time, a congestion condition occurs and the call can no longer be made. Therefore, there is a problem in that an emergency call between incoming / outgoing subscribers who want to use urgently can not be connected when an urgent call request occurs nationally or locally.

The present invention has been made to solve the above-mentioned problems, the object of the present invention is that when the relay line is all busy by the caller / incoming subscriber, forcibly cut the relay line to the longest call in the OPS, urgent call request It is to provide a call cutting control method that can be connected to.

Call disconnection control method according to the present invention for achieving this object comprises the steps of determining whether a specific digit signal desired for an emergency call from a particular originating subscriber during a call between a plurality of originating / receiving subscribers; Number translation of a specific digit signal, and requesting call setup to form a local currency path to an operator location system according to the number translation result message; Notifying a call setup response message to a specific calling subscriber through an electronic switch to form a call path between the specific calling subscriber and the operator location system so that the call setting response can be performed in the operator location system in response to the call setup request; Notifying the operator location system of the telephone number of the particular called party that the particular calling party wants to call through the established call path; Dialing a telephone number notified from a specific calling subscriber and transmitting the telephone number to an electronic switch; Translating the telephone numbers at the telephone exchange, and determining whether all of the trunk line communication paths formed at the plurality of calling / receiving subscribers are busy; Transmitting a congestion sound to an operator location system if all the trunk line communication paths are busy as a result of the determination; Requesting a busy list between a plurality of calling / receiving subscribers at an electronic switchboard in an operator location system that has listened to congestion; Collecting a busy list between the plurality of calling / receiving subscribers at the electronic switching center and notifying the operator location system; Finding a long-running trunk line among the plurality of incoming / outgoing subscriber call lists notified by the operator location system and making a request for truncation of the long-running trunk line through the electronic switch; Forcibly cutting the longest-running trunk line in the electronic switchboard and transmitting the cut result to an operator location system; Pressing a telephone number for a specific called subscriber notified from a specific calling subscriber in an operator location system and transmitting the telephone number to the electronic switchboard; Translating the numbers with respect to the telephone number in the electronic switchboard, and forming a trunk line communication path cut according to the number translation result as a communication path between specific calling / receiving subscribers so as to make an emergency call.

1 is a block diagram to which a call cutting control method of an electro-electric switch according to the present invention is applied;

2 is a detailed flowchart for forming a call path between an originating subscriber and an OPS according to the present invention;

3 is a detailed flowchart illustrating the formation of a call path between an OPS and a called subscriber according to the present invention;

4 is a detailed flowchart illustrating the formation of a call path between calling / calling subscribers according to the present invention;

Figure 5 is a detailed flowchart of the call disconnection control method of the electronic switching system according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: calling subscriber 4: called subscriber

10: calling subscriber 20: electronic switch

21: Subscriber Line Processor 23: Switching & Number Translation Processor

25 trunk line processor 30 operator position system

40: incoming subscriber

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

1 is a block configuration diagram to which a call disconnection control method of an electronic switchgear 20 according to the present invention is applied and includes a plurality of originating subscribers 1, 10, ..., an electronic switchgear 20, and an OPS. 30, and a plurality of called subscribers 4, 40,...

A plurality of originating subscribers (1, 10, ...) first attempts to call a call with the OPS (30) in order to talk to a plurality of called subscribers (4, 40, ...) located in a foreign exchange not shown. For this purpose the calling subscriber 1, 10,... Dials a specific telephone number, for example a specific digit "7". The exchange 20 is inputted to a specific telephone number dialed by the originating subscriber 10.

The switchboard 20 converts the number of the specific digits transmitted from the calling subscribers 1, 10, ... into a call path to the OPS 30, and then uses the OPS 30 to relay the call line. (50, ...) is formed to control the call between the incoming and outgoing subscriber (1, 10, ..., 4, 40, ...). The electronic switch 20 includes a subscriber line processor 21 (hereinafter, abbreviated as SLP) 21 and a switching and number translation processor (hereinafter referred to as SLP). And a trunk line processor (hereinafter, abbreviated as TLP) 25.

SLP 21 is a line processor that oversees call processing between originating / receiving subscribers 1, 10, ..., 4, 40, ... The number is transmitted to the SNP 23 to control the number translation, and the call translation is requested to the OPS 30 based on the number translation result of the SNP 23 to control the local currency path. In addition, when the telephone number for the voice subscriber notified by the originating subscriber (10, ...) is received by the OPS (30) receiving the telephone number, it is transmitted to the SNP (23) to translate the number To the called party (4, 40, ...) through the TLP (25) according to the number translation result, and the OPS (30) and the called party (4, 40, ...) Control to form an intermediate relay line (50, ...). The SLP 21 receives the connection key control signal for the call establishment request between the calling / receiving subscribers 1, 10,..., 4, 40,... 1, 10, ...) and OPS (30) on the local call path between OPS (30) and the trunk line (50, ...) between OPS 30 and the called subscriber (4, 40, ...). Only the call path to the call is released, and a direct trunk line (50, ...) between the caller / incoming subscriber (1, 10, ..., 4, 40, ...) is formed.

The SNP 23 is a processor that controls the inter-switching network and performs translation for the telephone number, and the specific digit number corresponding to the OPS 30 and the called subscriber 4 according to the number translation request transmitted from the SLP 21. Translating the phone number corresponding to,, 40, ...), and sending outgoing occupancy request to the TLP 25 based on the translation of the telephone number corresponding to the called party (4, 40, ...) do.

The TLP 25 is a processor that handles the call processing of the outgoing line and handles and controls signal information for transmitting and receiving signals between stations. The TLP 25 receives outgoing occupancy requests transmitted from the SNP 23 through the SLP 21. Process, request a switch connection to the SNP 23 to form a call path with the SNP 23, and transmits a call setup request sent from the SLP 21 to the destination subscribers (4, 40, ...) do.

The OPS 30 is a system that connects the caller / incoming subscribers 1, 10,..., 4, 40,... After establishing the call path with ...), the called subscribers (1, 10, ...) are notified by voice to the called subscribers (4, 40, ...) transmitted through the electronic switch 20. According to the corresponding telephone number, a communication path is formed between the OPS 30 and the called subscribers 4, 40,... Next, the OPS 30 transmits a connection key input signal capable of connecting the originating / receiving subscribers 1, 10,..., 4, 40,... Make sure you have a currency path between (1, 10, ..., 4, 40, ...).

Referring to the flowchart of Fig. 2, a detailed description will be given of setting a relay line call path between the calling subscriber 10, ... and the OPS 30 according to the present invention having the above-described configuration.

First, the SLP 21 of the electronic switchgear 20 is a transmitter / receiver of the calling subscriber 10,... To talk to the called subscriber 40, ... from the calling subscriber 10,. It is determined whether the hook-off signal of and the input signal for the specific digit number using the key input unit are transmitted (step 200).

The SLP 21 controls the number translation by transmitting a specific digit signal transmitted from the calling subscriber 10,... To the SNP 23 (step 201).

The SNP 23 number-translates the specific digit signal transmitted from the SLP 21, and then transmits the number translation result message to the SLP 21 (step 202).

The SLP 21 requests call setup to form a local call path to the OPS 30 by the number translation result message sent from the SNP 23 (step 203).

The OPS 30 notifies the SLP 21 of the call setup response message so that the call setup can be performed in response to the call setup request from the SLP 21 (step 204).

The SLP 21 receives the call setup response message sent from the OPS 30 and notifies the calling subscriber 10,... The call setup response message to the calling subscriber 10, ... and the OPS 30. A local currency path is formed (step 205).

With reference to the flowchart of FIG. 3, the setting of the relay line communication path 50, ... between the OPS 30 and the called subscribers 40, ... according to the present invention having the above-described configuration will be described in detail.

During a call between the calling party (10, ...) and the OPS (30), the OPS (30) receives a telephone number for the called party (40, ...) that has been voicely notified from the calling party (10, ...). After reception, the telephone number of the called party 40, ... is pressed and transmitted to the SLP 21 in order to connect to the called party 40, ... (step 300).

The SLP 21 transmits the telephone number corresponding to the called subscriber 40,... Transmitted from the OPS 30 to the SNP 23 so that the number can be translated. The call is transmitted to the calling subscriber 10, ..., and the call setup is requested to the TLP 25 so that a relay line 50, ... can be formed with the called subscriber 40 (...) (step). 301).

The TLP 25 requests a call establishment request message from the SLP 21 to the called party 40, ... so that a call path can be formed with the called party 40 ... Step 302).

The called party 40, ... responds to the call setup request from the TLP 25 and notifies the TLP 25 of the call setup response message to perform call setup (step 303).

The TLP 25 notifies the OPS 30 via the SLP 21 of the call setup response message sent from the called party 40,... Between the OPS 30 and the called party 40... A relay line call path 50, ... is formed and is in a call state (step 304).

Referring to the flowchart of Fig. 4, the relay line path 50,... Set up between the calling subscriber 10,... And the called subscriber 40,. It demonstrates in detail.

During a call between the calling party 10, ... and the OPS 30, and between the OPS 30 and the called party 40 ..., the OPS 30 is called by the calling party 10, ... The connection key is transmitted to the SLP 21 so that the call can be made between the subscribers 40, ... (step 400).

The SLP 21 receives the connection key signal from the OPS 30, and transmits the connection key signal between the calling party 10,... And the OPS 30 by the connection key signal, and the OPS 30 and the called party 40. , ...) only releases the call path to the OPS 30, and a direct trunk line (50, ...) is formed between the calling party (10, ...) and the called party (40, ...). Control to be possible (step 401).

A relay line is formed between the calling party and the called party 10,..., 40,... .

With reference to the flowchart of FIG. 5, the call cutting control method of the all-electronic exchanger 20 by this invention which has the structure mentioned above is demonstrated in detail.

During a call between originating / receiving subscribers 10,..., 40,..., SLP 21 is urgently requested when a particular originating subscriber 1 wants to speak with a particular called party 4. It is determined whether a signal is input (step 500).

If it is determined in step 500 that a specific digit signal is input, the SLP 21 transmits the hook-off signal and the specific digit signal transmitted from the specific originating subscriber 1 who wants an emergency call to the SNP 23 to translate the number. (Step 501).

The SNP 23 transcodes the hook-off signal and the specific digit signal transmitted from the SLP 21, and then transmits the number translation result message to the SLP 21 (step 502).

The SLP 21 requests call setup to form a local call path to the OPS 30 by the number number result message sent from the SNP 23 (step 503).

The OPS 30 notifies the SLP 21 of the call setup response message so as to perform call setup in response to the call setup request from the SLP 21 (step 504).

The SLP 21 is notified of the call setup response message sent from the OPS 30 and the call setup response message is notified to the calling subscriber 1 so that a local call path is established between the specific calling subscriber 1 and the OPS 30. And the call is in a busy state (step 505).

During a call between a particular calling party 1 and an OPS 30, the OPS 30 is a telephone number corresponding to a particular called party 4 in order to connect with a specific called party 4 notified from the particular calling party 1. Press to send to SLP 21 (step 506).

The SLP 21 receives the telephone number corresponding to the specific called subscriber 4 transmitted from the OPS 30 and transmits it to the SNP 23 to control the number translation, and translates the number by the SNP 23. If the call corresponds to the specific called party 4 according to the result, call setup is requested to the TLP 25 so that the relay line 50 can be formed with the specific called party 4 (step 507).

The TLP 25 identifies the trunk line call paths 50, ... between a plurality of originating / receiving subscribers 10,..., 40,... To establish a call to a particular called party 4. . As a result, when a plurality of calling / receiving subscribers (10, ..., 40, ...) are all busy, the TLP 25 passes through the SLP 21 to the OPS 30 through the relay line 50, And sends a runaway sound that all are in use (step 508).

The OPS 30 listens to the busy sound of the trunk line 50,... And requests the SLP 21 the busy list between the calling / receiving subscribers 10,..., 40,... (Step 509).

The SLP 21 collects the busy list between the calling / receiving subscribers 10,..., 40,... By the busy list request from the OPS 30 and notifies the OPS 30 (step) 510).

OPS (30) checks the longest busy relay line by checking the talk time in the call list between the incoming and outgoing subscribers (10, ..., 40, ...), the longest busy relay line confirmed In order to forcibly cut the channel, a request is made to cut the long-running trunk line through the SLP 21 to the TLP 25 (step 511).

The TLP 25 forcibly cuts the longest-running trunk line communication path according to the cut request from the OPS 30 and transmits the cut result to the OPS 30 through the SLP 21 (step 512).

The OPS 30 presses the telephone number for the specific called party 4 notified from the specific calling party 1 and sends it to the SLP 21 (step 513).

The SLP 21 receives the telephone number for the specific called subscriber 4 transmitted from the OPS 30 and transmits the number to the SNP 23 to control the number translation. The relay line is forcibly cut according to the number translation result. The call path 50 is re-formed as a call path between the specific calling / receiving subscribers 1 and 4 to control an emergency call between the specific calling / receiving subscribers 1 and 4 (514).

In the present invention as described above, when all of the trunk line communication lines between the calling / receiving subscribers are busy, the relay line forcibly cuts the longest active call line in the OPS and connects an urgent call request notified from any originating subscriber. Therefore, there is no need to install additional relay line.

Claims (1)

In the call cutting control method for emergency call in the electronic switchboard, During a call between a plurality of originating / receiving subscribers, determining whether a specific digit signal for an emergency call from a particular originating subscriber is input; Translating the specific digit signal and requesting call setup to form a local call path to an operator location system according to the number translating result message; In response to the call setup request, a call setup response message is notified to the specific calling party through the electronic switchboard so that the operator location system can perform call setup. Forming; Notifying the operator location system of the telephone number of a specific called subscriber that the specific calling subscriber wants to call through the formed call path; Pressing a telephone number notified from the specific calling subscriber and transmitting the telephone number to the electronic switch; Translating the telephone numbers in the electronic switchboard and determining whether all of the relay line call paths formed in the plurality of calling / receiving subscribers are busy; Transmitting a congestion sound to the operator location system if all the trunk line communication paths are busy as a result of the determination; Requesting a busy list between the plurality of calling / receiving subscribers from the operator location system in the operator location system that has heard the congestion; Collecting a busy list between the plurality of originating / receiving subscribers in the electronic switchboard and notifying the operator location system; Finding a long-running trunk line of the plurality of incoming / outgoing subscriber call lists notified by the operator location system and making a request to cut the longest-running relay line through the electronic switchboard; Forcibly cutting the longest-running trunk line in the electronic switchboard and transmitting the cut result to the operator location system; Pressing the telephone number for the specific called party notified from the specific calling party in the operator location system and transmitting the telephone number to the electronic switchboard; Translating the number with respect to the telephone number in the telephone exchange, and forming the cut-out relay line communication path as the communication path between the specific calling / receiving subscribers according to the number translation result to make an emergency call. The arc cutting control method of an electro-electric exchanger is made.