KR19980014077A - (METHOD FOR PROCESSING CALL RESERVATION IN FULL-ELECTRONIC SWITCHING SYSTEM) - Google Patents

Abstract

The present invention relates to a call reservation processing method in a pre-service electronic exchange, in which at least one guide group is connected and a call setup is made to a subscriber terminal of its own station or a subscriber station of its own station and a subscriber station of other station A first step of requesting a call setup for one of the at least one guide party (24) in response to a call setup from the originating subscriber terminal (12) A second step of selectively executing call reservation from the calling subscriber terminal (12) and registering the call reservation information in the call reservation memory when setting up a call for the call reservation, based on the call reservation information; And a third step of performing a call connection to the called subscriber, wherein the call reservation information includes a name of the calling subscriber occupying the calling subscriber terminal, , It will include the name and phone number of the called party and call scheduled time.

Description

Call reservation processing method in the electronic exchanges before the national holiday

The present invention relates to a call reservation processing method in an electronic exchanger before a national service, and more particularly, to a method for processing a call reservation in an electronic exchanger before a national call by at least one Operator Positioning System (OPS) A call reservation processing method in a pre-call electronic exchange for allowing a calling subscriber terminal and a called subscriber to be in a talkable state by connecting a call connection with a called subscriber at a scheduled time when a call reservation for the call of the called subscriber is made will be.

As is well known, a plurality of subscriber terminals are connected to each other via a call channel and are signal-connected to each other to realize an optimal call service for call setup and call request generated between a calling subscriber terminal and a called subscriber terminal And the former electronic exchanger is practically used as a public exchange system.

According to the former electronic exchange, a plurality of subscriber terminals accommodated in one switching center are connected to a call channel including, for example, a semiconductor switch via a subscriber line, so that mutual communication is possible, The subscriber terminal can establish a call through the trunk medium.

In addition, all the electronic exchanges are equipped with the following functions: all the events occurring in the subscriber line and the trunk, such as ON / OFF hooks of the transceiver, dialed telephone numbers, incoming signals from subscriber terminals of other stations, (Busy)] and the like and notifies the control unit of the detection result.

In addition, the electronic exchanger also includes signaling equipment responsible for processing signals to be transmitted through a telecommunication network, such as a dial tone, an intermediate tone, a ringing tone, a call signal current , A signal to be transmitted to the other station exchange, and the like.

Therefore, according to the pre-service electronic exchange, automatic call connection processing and call signal processing to the called subscriber terminal are performed in response to the call request from the calling side subscriber terminal, thereby providing efficient call service.

In the case where the format of the exchange of the other station to which the call setup request generated at the subscriber terminal of the own electronic exchange is different from the format of the exchange of the own station of the own station, for example, it is impossible to directly set the call with the subscriber terminal connected to the exchange of the other exchange .

Considering such a situation, a so-called 0g operator position system is used for realizing a call connection to a foreign exchange that employs a different exchange scheme for a pre-service electronic exchange, or for a separate billing process for a subscriber terminal of its own country, 0c is connected to at least one or more of the plurality of switching centers. In this case, the operation of the operator operating the guide in response to the call setup request generated at the subscriber terminal of the local exchange by the provision of the guide, A compatible call connection with the other subscriber terminal connected to the exchange becomes possible.

In the case where the call reservation function for the called subscriber terminal, that is, the called subscriber, is not assumed from the calling subscriber terminal through at least one guide line accommodated in the local electronic exchanger, or a call to the called subscriber The calling subscriber terminal frequently requests a call setup for the called subscriber when the called subscriber is in a call or does not receive a call.

That is, when the call reservation function for the called subscriber is not processed by the guide line of the local exchange, the calling subscriber terminal repeatedly tries to make a call connection until the call connection with the called subscriber is made, It is disadvantageous in that it is required to respond to a call setup request from the originating subscriber terminal generated by the originating subscriber terminal.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a call reserving function for a called subscriber from a calling subscriber terminal to at least one guidepair connected to a pre- And a call connection to the called subscriber at the time of the registered call reservation time so as to set a call call between the calling subscriber terminal and the called subscriber, The present invention has been made in view of the above problems.

In order to achieve the above object, according to a preferred embodiment of the present invention, at least one guide bar is connected to perform a call setup for a subscriber terminal of its own station or a subscriber station of its own station and a subscriber station of its own station via its guide bar A method for establishing a call center in a public switched telephone network, the method comprising: a first step of requesting call setup for at least one guide in at least one of the at least one guide party via a called subscriber means in response to a call setup from the originating subscriber terminal A second step of selectively executing call reservation from the calling side subscriber terminal and registering the call reservation information in the call reservation memory under the control of the called subscriber means when setting up a call for the call reservation, And a third step of performing a call connection to the called subscriber as the call reservation target based on the information The reservation of the call processing in the electronic exchange method is provided.

According to the present invention, the call setup for the guide set in the first step requires a call setup for at least one guide set, and if there is a guide set available for responding to the call setup request, A call reservation / call connection to a called subscriber is performed in response to the call setup request, and if the call set is in a call setup disable state, the call setup request is stored in a call waiting queue of the called subscriber means, The call setup information stored in the call waiting queue is read out by the first-in first-out method, and the call setup request is transmitted to the guide board.

The call reservation in the second step may be performed by selectively receiving a call reservation or a call connection to a called subscriber in response to a call setup request in the guide, The calling party determines whether or not to be called at the called subscriber by attempting to make a call connection, and when the called subscriber receives the call, the calling party sets a call path between the calling subscriber and the called subscriber in the guide, And executes the call reservation guidance if the call is not received and stores the call reservation information in the call reservation memory means when the call reservation is requested.

Preferably, the call reservation information includes a name and a telephone number of a calling subscriber occupying the calling subscriber terminal, a call reservation time, a name of a called subscriber, and a telephone number.

According to the present invention, the call connection to the called subscriber based on the call reservation information in the third step is performed based on the result of counting the current time displayed by the timer in the called subscriber unit, Wherein the called subscriber unit transmits the call reservation information registered in the call reservation memory to the guide band when the call reservation time comes, and in the guide group, based on the call reservation information, The call connection is made to be performed.

According to the call reservation processing method in the pre-service electronic exchange according to the present invention, when a call setup is set for a called subscriber after a call setup is requested from a calling subscriber occupying a calling subscriber terminal for at least one guide group The call reservation information is registered in the call reservation memory under the control of the called subscriber means, and when the counting result displayed by the timer means becomes the call reservation time of the call reservation information, the call reservation information registered in the call reservation memory So that the call connection to the called subscriber is performed so that the calling path between the calling subscriber terminal and the called subscriber can be set at the reserved time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a functional block diagram of a pre-call electronic exchanger having a guide for implementing a call reservation processing method according to a preferred embodiment of the present invention,

Fig. 2 is a flowchart for explaining a call reservation processing method in a pre-service electronic exchanger according to the present invention.

[0002] DESCRIPTION OF REFERENCE NUMBERS

10: Local exchange, 12: Local subscriber terminal,

14: originating subscriber unit, 16: number translation unit,

18: called subscriber unit, 20: Q.931 protocol unit,

22: Q.921 link section, 24: guide stand,

26: relay call processing unit, 28: call reservation memory,

30: timer, 32: foreign exchange.

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

FIG. 1 is a functional block diagram of a public switched telephone exchange in which at least one guide unit implementing a call reservation processing method according to the present invention is connected.

In the local exchanger indicated by reference numeral 10 in FIG. 1, reference numeral 12 denotes a guide line (to be described later) between a called subscriber accommodated in the local exchange 10 or an incoming subscriber accommodated in another exchange ('32' 1 " 24 " in FIG. 1 to indicate a typical subscriber terminal performing call reservation or call reservation.

14 requests a number translation in response to a call setup or call reservation request for the called subscriber generated in the subscriber terminal 12 of the local exchange 10 from the subscriber terminal 12 of the local exchange 10 If the call setup for the generated guide 24 is impossible or the call setup for the called subscriber is impossible, the connection result of the announcement 24 or the announcement about the call disabled state with the called subscriber, And indicates an originating subscriber line control part for notifying the calling subscriber terminal 12 of the connection status through a call with the called subscriber based on the call reservation.

In addition, reference numeral 16 denotes a dialing unit for receiving a number translation request for establishing a call with the called subscriber, which is transmitted via the calling subscriber unit 14 or a relay phone processing unit (indicated by "26" in FIG. 1) Receives a message requesting connection to a call in the guide 24, and transmits the message to the calling subscriber unit 14 (or the relay call processing unit 26) requesting call setup Represents a number translation processing part.

18 accepts a call setup request or a call reservation request for the translation requested number from the originating subscriber unit 14 and judges a state in which the guide party 24 can respond to the call, When a call with the guide 24 is available, a response to the call setup request is issued from the subscriber terminal 12 on the calling side, or when the response of the guide 24 is impossible, A call setup request from the calling subscriber terminal 12 until a call becomes available; (Not shown), and a guiding announcement indicating the busy state of the guide 24 is transmitted to the subscriber terminal 12 of the calling party in place of the busy tone, indicating a terminating subscriber line control part . In addition, the called subscriber unit 18 can not reserve a call from the calling subscriber terminal 12 to the called subscriber terminal 12 because the call reservation for the called subscriber is made in the calling subscriber terminal 12, The call reservation information is stored in the call reservation memory ('28' in FIG. 1) so that the called party and the calling party subscriber terminal 12 are connected to each other when the call reservation time arrives do.

Here, the call reservation information includes the name and telephone number of the calling subscriber occupying the calling subscriber terminal 12, the name and telephone number of the called subscriber, and the call reservation time.

In addition, the call subscriber unit 18 is set such that call reservation is set at an interval of about five minutes, and a maximum of four calls can be reserved at the same time while a maximum of 64 calls can be reserved. The possibility of reservation of a call in the mobile terminal 18 becomes expandable as needed.

1, reference numeral 20 indicates a call setup request from the called subscriber unit 18 to the guide base 24 and a call setup OK message from the guide base 24 to the called subscriber unit 18 Q.931 protocol part (ITU-T Q.931 recommadation processing part) that performs the protocol of the ITU-T Recommendation for delivery to the network.

22 transmits a call setup request in the Q.931 protocol unit 20 transmitted to the guide base 24 side and transmits a call setup OK message to the Q.931 protocol unit 20 in Q.921 Link section (ITU-T Q.921 recommadation processing part).

1, the guide 24 is provided at least one with respect to the local exchange 10, and in response to a call setup request (or call reservation request) generated at the originating subscriber terminal 12, The call set-up unit 24 performs call set-up processing with the called subscriber accommodated in the local exchange 10 or the exchange 32 of the other station, for example, The call reservation information for the called subscriber is registered by the operator's operation in response to the request and is registered in the called subscriber unit 18. In addition, when the call reservation time arrives, the call from the called subscriber unit 18 Side subscriber terminal 12 and the called subscriber on the basis of the reservation information.

1, the relay call processing unit 26 requests the number translation unit 16 to translate the called party number to the called party number requested by the called party (or subscriber terminal) of the foreign exchange unit 32 And performs a relay process of a message for notifying the called subscriber (or the subscriber terminal) of the exchange 32 of the other station that the announcement connection result processed by the number translator 20 has been processed.

In addition, reference numeral 30 in Fig. 1 denotes a timer for displaying the current time and applying the counted result to the called subscriber unit 18, and the called subscriber unit 18 displays the counted time from the timer 18 Based on the result, the arrival of the call reservation time is judged and the call reservation function is executed.

Next, a call reservation processing method in the pre-service electronic exchange according to the present invention realized by the configuration shown in Fig. 1 will be described in detail with reference to the flowchart shown in Fig.

First, a call setup request to the guide 24 is transmitted to the subscriber terminal 12 of the local exchange 10 for communication (or call reservation) with, for example, a called subscriber accommodated in the local exchange 10 or the exchange 32 of the other station, A number translation request is transmitted to the number translating unit 16 via the calling subscriber unit 14 in response to a call setting request of the guide group 24 (step 42) .

When the number translation request is received from the calling subscriber unit 14, the number translating unit 16 requests the calling subscriber unit 18 to call the guide board 24 at step 44, The information on the status of at least one guide 24 connected to the local exchange 10 is provided to the Q.921 link unit 22 and the Q.921 link unit 22, (Step 46). In step 46, it is determined whether there is a call guide 24 that can be called for the call setup request in the state of being received and stored via the Q.931 protocol unit 20.

If it is determined in step 46 that there is no communicable guide 24, the called subscriber 18 transfers the busy state of the guide 24 to the calling subscriber 14, The information on the guide-to-call request from the subscriber unit 14 is stored in an internal call waiting queue (step 48).

Then, the calling subscriber unit 14 requests the number translation unit 16 to connect the announcement broadcast channel 24 during the call (step 50), and in response to the announcement connection request The number translator 16 connects the announcement broadcast in step 52 and informs the calling subscriber unit 14 of the result of the announcement of the announcement broadcast, The announcement about the busy state of the guide board 24 is performed on the subscriber terminal 12 side of the cellular phone 10 by voice.

The guide 24 then requests the call terminating subscriber 18 to disconnect the call through the Q.921 link unit 22 and the Q.931 protocol unit 20, The called subscriber unit 18 notifies the result of the call disconnection to the guide base 24 side or requests the call destination subscriber unit 18 to disconnect the call in the call to the guide base 24, The call center 24 informs the calling subscriber 18 of the result of the call disconnection request.

Then, when the called subscriber unit 18 judges the recovery of the callable guide 24 (YES at step 54), the called subscriber unit 18 transmits the call information stored in the call waiting queue to the FIFO (Step 56). In this way, a call request is issued to the guide 24 that can be talked with.

Also, even if there is a talkable guide 24 as a result of the determination in step 46, the process proceeds to step 56 and a call request is issued to the guide 24.

In response to the call request from the called subscriber unit 18 generated in step 56, the callable group 24 transmits a ring to the called subscriber unit 18 that has requested the call setup, And notifies the setting OK (step 58).

Accordingly, when the called subscriber unit 18 receives the call setup OK information, the called subscriber unit 18 transmits Ring starting information to the calling subscriber unit 14 (step 60).

The originating subscriber unit 14 having received the ring start information determines whether the subscriber is in a state of listening to the announcement broadcast to be executed in the process of step 52. In step 62, If it is determined that the user is listening, the number translator 16 is requested to disconnect the announcement broadcast, and then the ring back tone is connected to the subscriber.

On the other hand, if it is determined in step 64 that the subscriber does not listen to the announcement, the process proceeds to step 68 and only the ringback tone is connected.

After the ringback tones in step 66 or step 68 are connected, the called subscriber 18 receives a response from the talkable guide 24 in step 70 and sends it to the calling subscriber terminal 12 The originating subscriber terminal 12 and the guide 24 are set in the communication state at step 72 and are transmitted to the guide 24 in response to a request from the subscriber terminal 12 of the local station, The guiding function in the mobile terminal is executed.

That is, the operator of the guide 24 judges whether call reservation for the called subscriber is required from the calling subscriber occupying the calling subscriber terminal 12 (step 74), and as a result, If call reservation is not required, the process goes to step 76 to determine whether call setup for the called subscriber is required.

As a result of the determination in step 76, if call setup for the called subscriber is requested from the calling subscriber terminal 12, the guide party 24 tries to establish a call connection to the called subscriber in step 78. [

That is, on the side of the guide 24, the call setup unit 20 transmits the call setup information stored in the call waiting queue to the called subscriber unit 18 via the Q.921 link unit 22 and the Q.931 protocol unit 20 And performs call connection to the called subscriber based on the call setting information.

If the called party receives the call from the called party (YES in step 80) while a call connection to such a called party is attempted, on the side of the guide 24, at step 82, the calling party's subscriber terminal 12 and the called party's So that the calling subscriber terminal 12 and the called subscriber enter the communication mode in step 84. [

On the other hand, if it is determined in step 80 that the called subscriber does not receive the call, the guide board 24 informs the called subscriber unit 18 via the called subscriber unit 18, The transmission of the announcement message to the subscriber terminal 12 is carried out so that the voice for the call reception status and call reservation for the called subscriber is transmitted to the subscriber terminal 12 via the calling subscriber unit 14 .

If the call reservation is not requested at the source subscriber terminal 12 in the step 88 (NO at step 88), the call center 24 disconnects the call to the called subscriber 18 The called subscriber unit 18 informs the calling subscriber unit 14 of the call termination and transmits the call termination to the calling subscriber terminal 12 and the guide line 24 is cut off and the call guide 24 is notified of a call cut OK, and the calling subscriber unit 14 requests the number translation unit 16 to cut off the call, The communication path formed between the calling side subscriber terminal 12 and the guide base 24 is cut off.

On the other hand, if it is determined in step 74 that the call reservation for the called subscriber is requested from the calling subscriber terminal 12 (i.e., YES in step 74 or step 88) The operator of the guide 24 receives the call reservation information at step 92 and sends the call reservation information to the called subscriber 18 via the Q.921 link part 22 and Q. 931 protocol part 20 The called subscriber unit 18 registers the call reservation information in the call reservation memory 28 in step 94 in response to the request. The call reservation information registered in the call reservation memory 28 includes the name and telephone number of the calling subscriber, the name and telephone number of the called subscriber, and the call reservation time.

In step 96, the called subscriber 18 notifies the guide 24 of the registration result of the call reservation information through the Q.931 protocol unit 20 and the Q.921 link unit 22, The operator of the guide 24 informs the subscriber of the originating subscriber terminal 12 of the registration of call reservation information in step 98. [

Then, in the guide 24, the call terminating subscriber unit 100 is requested to intercept the call through the Q.921 link unit 22 and the Q.931 protocol unit 20, The called subscriber unit 18 notifies the number translation unit 16 of the call termination and performs call termination. In step 104, the called subscriber unit 18 notifies the call center 24 of OK call interruption via the Q.931 protocol unit 20 and the Q.921 link unit 22, The calling subscriber unit 106 requests the number translation unit 106 to disconnect the call to the calling subscriber terminal 12 and disconnects the call to the calling party 24 in step 106 .

In this state, the called subscriber 18 updates the call reservation time of the call reservation information registered in the call reservation memory 28 based on the result of counting the current time provided by the timer 30 in step 108 The called subscriber unit 18 transmits the call reservation information registered in the call reservation memory 28 (i.e., the name of the calling subscriber and the name of the called subscriber) in step 110. In this case, The name of the called party, and the telephone number of the called party) and transmits it to the guide 24 via the Q.931 protocol unit 20 and the Q.921 link unit 22.

In step 112, the guide 24 tries to make a call connection to the corresponding called subscriber in step 112, and determines in step 114 whether the called subscriber receives the call. If the called subscriber receives the call based on the call reservation, the process proceeds to step 116 to notify the calling subscriber terminal 12 of the call connection OK state with the called subscriber, And the called subscriber are set to the call by the call reservation and enter the communication mode.

On the other hand, when the called subscriber does not receive the call in step 114, the guide party 24 informs the calling subscriber terminal 12 of the reception disabled state of the called subscriber and disconnects the call.

As described above, according to the call reservation processing method in the pre-service electronic exchange according to the present invention, at least one guide block is provided so that call reservation for the called subscriber is set in the calling side stronghold terminal, In a case where call reservation is selectively set in a state in which a call can not be made to a calling subscriber and a called subscriber (a called subscriber), the call reservation information is registered and a call is made between the calling subscriber terminal and the called subscriber Therefore, the call connection efficiency in the guide is greatly improved even when the originating subscriber frequently does not issue a call setup request to the called subscriber, and the call connection efficiency of the originating subscriber terminal occupying the originating subscriber terminal is greatly improved. The convenience of call setup can be doubled.

Claims (5)

Wherein the at least one guide is connected to the subscriber terminal of the self station or the subscriber terminal of the self station and the subscriber terminal of the self station of the self station through the guide band, (12) in response to a call setup requesting a call setup for at least one guide group (24) of at least one guide party via a called subscriber unit; A second step of selectively executing call reservation from the subscriber terminal 12 and registering the call reservation information in the call reservation memory under the control of the called subscriber unit; And a third step of executing a call connection to the called subscriber as a reservation target. . 2. The method according to claim 1, wherein the call setup for the guide set in the first step includes requesting a call setup for at least one guide set, and if there is a guide set available for responding to the call setup request, The call set-up request / call connection to the called subscriber is executed in response to the call set-up request, and if the call set is in the call settable state, the call set-up request is stored in the call-waiting queue of the called subscriber means, When the call reservation is restored, the call setup information stored in the call waiting queue is read in a first-in first-out manner, and the call setup request is transmitted to the guide. 2. The method according to claim 1, wherein the call reservation of the second step selectively receives call reservation or call connection to a called subscriber in response to a call setup request in the guide, When the called subscriber receives the call, the call center sets a call path between the calling subscriber and the called subscriber in the guide zone, Wherein the call reservation information is executed so as to execute the call reservation guidance when the called subscriber does not receive a call and store the call reservation information in the call reservation memory means when the call reservation request is made How to handle reservations. The call reservation system according to any one of claims 1 to 3, wherein the call reservation information includes a name of a calling subscriber occupying the calling subscriber terminal, a telephone number, a call reservation time, a name of a called subscriber, A call reservation processing method in a public electronic exchange. 2. The method according to claim 1, wherein the call connection to the called subscriber based on the call reservation information in the third step is performed based on a result of counting the current time indicated by a timer in the called subscriber means, Wherein the called subscriber unit transmits the call reservation information registered in the call reservation memory to the guide band when the call reservation time comes, and in the guide group, based on the call reservation information, Is performed so as to establish a call connection to the call forwarding processing unit.