JP3390637B2 - Waiting connection method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waiting connection system in a specific number call connection service of an intelligent network.

[0002]

2. Description of the Related Art Conventionally, in an intelligent network composed of a subscriber switching center (including a service access point (SAP)), a service control station (NSP), a service control general control station (NSSP) and a common line signaling network. There is a line connection service that allows you to connect to multiple telephone lines with a single telephone number, such as a free-dial service or a navigation dial service, a so-called specific number call connection service. It was possible to receive all the calls from the persons at the same telephone number at the same time and provide various services such as information provision.

[0003]

However, in the above-mentioned conventional specific number call connection service, when more calls than the number of contracted reception lines occur at the same time, an "overflow call", that is, an invalid call (BT connection) occurs in the network. Therefore, there was a problem that the opportunity to acquire the user (customer) who made the call was lost. Of course, it is possible to reduce such invalid calls by increasing the number of reception lines, but it is necessary to install additional equipment such as telephones for reception, and the contract fee with the telecommunications carrier also rises accordingly. There was a problem.

The object of the present invention is to have the network (communication carrier) wait for more calls than the number of reception lines, which has hitherto been overcrowded, and to make a vacancy in the reception line within a predetermined time. In some cases, it is to provide a waiting connection method that allows the user to connect.

[0005]

In order to achieve the above object, the present invention provides a specific number call connection service in an intelligent network composed of a subscriber switching center, a service control station, a service control control station and a common line signaling network. , Judgment of the open / closed state of the telephone line of the specific number call connection, if there is no free line, send the guidance for waiting to the destination telephone line and hold it, and then a free line occurs within the predetermined time In this case, a waiting connection method is proposed in which the destination telephone line is connected to the free line, and otherwise the destination telephone line is disconnected.

According to the present invention, when a user makes a call to a specific number on which all the reception lines are busy, a guidance to the effect that a waiting connection is made is sent and the waiting time is timed. When there is a vacancy in the reception line, the line will be connected, so the operator with the specified number can wait for users who cannot connect to the line, increasing the chances of acquiring customers without increasing the number of reception lines. be able to.

[0007]

1 is a system configuration diagram showing an example of an embodiment of the present invention, in which 10 and 20 are subscriber exchanges (including SAP (service access point)) and 30. Is a service control station (NSP), 40 is a service control station (NSSP), 50 is a common line signaling network, 6
Reference numerals 1 and 62 are telephones, and 63 is a control terminal.

The subscriber switching center 10 accommodates a user, that is, a telephone 61 of a caller through a subscriber line 71, and is provided with a call connection processing means 11, a guidance sending means 12 and a timer means 13. There is. In addition, the subscriber exchange 20
Is for accommodating the telephone 62 of the service provider, that is, the called party through the subscriber line 72 and the control terminal 63 through the subscriber line 73. The call connection processing means 2
1 is provided.

The service control station 30 controls the call processing of the specific number transmitted from the caller, and includes a call connection instructing means 31, a waiting registration means 32 and a guidance control means 33.
Is equipped with. The service control station 40 processes call processing information of a specific number, and downloads data (specific number, waiting number upper limit value, etc.) regarding a service provider who has made a contract for a waiting connection to the service control station 30.

The subscriber switching offices 10 and 20 and the control station 30 are connected to the common line signaling network 50 via control lines 81, 82 and 83 for mutually transmitting and receiving control signals for information transmission. The control station 30 and the control control station 40 are connected via a line 84 for transmitting and receiving information signals.

Further, the control terminal 63 is connected to the control station 40, and sets and changes the upper limit value of the waiting number registered in the control station 30 via this.

The telephone set 62 of the called party and the control terminal 63
It is also possible to accommodate them in different subscriber exchanges, and is not limited to those accommodated in the same subscriber exchange.

Here, the call connection processing means 11 and 21 transmit and receive call information such as a specific number transmitted from the telephones 61 and 62, respectively, and at the same time, the call connection instructing means 31 instructs the call connection and the transmission of a busy tone. I do. Further, the guidance sending means 12 sends out a plurality of guidances prepared in advance, that is, “waiting guidance” or “disconnection guidance” according to the instruction information sent from the guidance control means 33. The guidance sending means 12 is not limited to being provided in the subscriber exchange station 10 (including SAP), but may be installed in the subscriber exchange station 20. Further, the timer means 13 measures the elapsed time after registration for each call that has been registered for waiting.

Further, the call connection instructing means 31 determines whether or not the connection destination telephone line corresponding to the specific number transmitted from the call connection processing means 11 and 21 is in the open / closed state, and the subscriber switching center 10
And call connection instruction to 20. Further, the waiting registration means 32 performs waiting registration / deletion of the call to the specific number transmitted from the call connection processing means 11 and 21. Further, the guidance control means 33 controls the guidance transmission based on the operation of the waiting registration means 32.

FIG. 2 is a control flow chart in this system, and the operation of this system will be described in detail based on this.

A specific number (for example, 0AB0-*****) is transmitted from the caller's telephone 61 (step s).
1) and the specific number are received by the subscriber switching center 10 via the subscriber line 71 and sent from the call connection processing means 11 to the control station 30 via the common line signaling network 50 (step s).
2).

The call connection instructing means 31 confirms the idle state of the connection destination line from the received specific number (step s).
3). The connection destination line referred to here is not only the subscriber line 72 connected to the telephone set 62 of the called party, but also the line (not shown) and the control which representatively set the subscriber line 72 in the subscriber exchange 20. It also includes a line (not shown) preset as a transfer destination of the subscriber line 72 in the station 30.

As a result of the confirmation in step s3, if there is a free line (step s3: N), the call connection instructing means 3
The call connection processing means 11 makes a line connection to the connection destination line according to the instruction 1;
2 and the line are connected (step s4).

As a result of the confirmation in step s3, if there is no idle line or if there is a call already registered for waiting (step s3: Y), whether the number of registered waiting calls registered is within the upper limit value or not. Whether or not (step s
5). The upper limit can be arbitrarily set and changed by the control terminal 63 connected to the control station 40.

If the result of determination in step s5 is that the number of waiting registrations is not within the upper limit value (step s5: N),
The call connection processing means 11 sends a busy tone according to an instruction from the call connection instruction means 31 (step s6).

As a result of the judgment in step s5, if the number of waiting registrations is within the upper limit value (step s5: Y).
Performs the waiting registration by the waiting registration means 32 (step s7), and sends the "waiting guidance" registered in the guidance sending means 12 according to the instruction of the guidance control means 33 (step s8).

The "waiting guidance" is a guidance for notifying that a call connection is currently impossible and a waiting connection will be made. , It is crowded. We will accept it as soon as it is available, so please wait as it is. The maximum waiting time is x minutes (1 to 5 minutes). " It should be noted that XX in the guidance can send any information such as the telephone number and name of the called party.

The registered waiting call is timed by the timer means 13 to determine whether or not a predetermined waiting time has elapsed (step s9), and whether or not there is a vacancy in the connection destination line. Judged (step s
10).

Here, if there is a vacancy in the connection destination line within the waiting time (steps s9: N, s10: Y), the call connection instructing means 31 instructs the call connection processing means 11 to make a line connection with the connection destination line. That is, the caller's telephone 61 and the callee's telephone 72 are connected by a line (steps s11, 1).
At the same time, the registration of the corresponding waiting call is deleted by the waiting registration means 32 (step s13).

As a result of the judgment in step s9, if there is no vacant connection line after the predetermined waiting time (step s9: Y), it is registered in the guidance sending means 12 by the instruction of the guidance control means 33. The disconnection guidance is sent (step s14), the line with the caller is disconnected (step s15), and the registration of the corresponding waiting call is deleted by the waiting registration means 32 (step s13).

The "disconnection guidance" referred to here is a guidance for notifying that the line being waited for is disconnected, and the caller of a specific number can say, for example, "I'm waiting for you, I accept it. It seems that it will take some time to get there. Sorry for the inconvenience, but I will cut it off once. Please understand. "

Although not shown in FIG. 1, the subscriber switching center 10 (or another subscriber equipped with guidance sending means) is used when the subscriber switching center 10 is connected to the line or the guidance is being sent. It is needless to say that the subscriber exchange station 10 is connected to the subscriber exchange station 10 through an ordinary telephone line (however, another subscriber exchange station equipped with guidance sending means is a subscriber exchange station 10).
Except when it is itself. ).

The number of calls that can be registered by the above-mentioned waiting registration means 32 is determined in advance for each called party (contractor), and for example, as shown in FIG. 3, the upper limit of the number that can be registered in the control station 30. It is held as the value (holding means thereof) 34. At this time, it is necessary to manage the number of connections to the waiting guidance (the number of waiting connections) so that the upper limit value is not exceeded. Therefore, as shown in FIG. The counter 3 held by each person
When 5 exceeds the upper limit 34, the waiting guidance connection is not established, but the BT connection is established. However, the maximum number of appointments 34
It is assumed that the contractor can arbitrarily set by the instruction of the control terminal 63 connected to the control control station 40. Further, the waiting time can be arbitrarily set by an instruction from the control terminal 63 connected to the control station 40. Next, a specific operation when the system of the present invention described above is used to perform a free dial service or a navigation dial service will be described.

FIG. 4 shows a waiting guidance transmission when it is possible to confirm that the carrier's line is busy by only NSP access. In this case, SAP (service access point).
FIG. 7 shows how waiting guidance is sent by the guidance sending means (not shown) installed in FIG.

(1) The user (sender) dials the operator's specific number "0AB0-D to J", (2) NSP (service control station) access, (3) the operator's line If there is a waiting call during all calls or in NSP, perform waiting registration, issue a waiting instruction to SAP, (4) Send waiting guidance to the caller (send BGM after that), and wait. To do.

FIG. 5 shows a waiting guidance transmission in the case where it is not possible to confirm that the carrier's line is busy by only NSP access. Here, guidance transmission means (not shown) mounted on the SAP (service access point). This shows how to send the waiting guidance by.

(1) A user (sender) dials a specific number "0AB0-D to J" of a business operator, (2) NSP (service control station) access, and (3) NSP air block management If there is a space in, notify the connection destination physical number to SAP,
(4) Connect with the physical number of the connection destination, (5) When the carrier's line is fully busy at the destination exchange, return the fact of busy to SAP.
(6) The NSP indicates that the connection could not be established due to the entire talk.
(7) If there is no other place to connect with the NSP, make a wait registration and issue a wait instruction to the SAP. (8) Send a wait guidance to the caller (after that, if necessary, BGM Is sent out) and the meeting is held.

FIG. 6 shows the connection of a waiting call.

(0) Sending BGM (guidance) during waiting (1) The NSP (service control station) sends an instruction to connect the waiting call by the following trigger, such as notification of call termination from SAP.
Instruct the AP, ・ If the NSP's free / busy management becomes empty during a call, issue an instruction to connect a call that is already waiting. ・ New call when the NSP has already registered a call that is waiting. If occurs, the connection instruction for the call already waiting is issued. However, the condition of the connection instruction to the carrier of the waiting call is that there is a vacancy in the NSP space management, and if there is no space management in the NSP, no connection instruction will be given. If the result of the call indicating that the call to the person who made the connection was notified from the SAP,
Next, the connection instruction of the waiting call is issued. However,
The condition of the connection instruction to the carrier of the waiting call is that there is a free space management in the NSP. If there is no free space management in the NSP, no connection instruction is issued. (2) SAP is BGM (guidance) Connection to the destination exchange, leaving (3) returning the connection result, (4) the SAP performs the following operation according to the connection result, and notifies the NSP of the connection result. In this case, the transmission of BGM (or guidance) is stopped, and the connection between the caller and the callee is made.-When the callee is in a call or congestion occurs at the relay node, BGM (or guidance) is kept sent.
(5) The NSP performs the following operations depending on the connection result: -When the operator responds, it is deleted from the queuing state management (the connection instruction for the next waiting call is issued to the SAP). For times other than time, waiting is continued (6) For the waiting time that has been set, the timer is managed by SAP. If the waiting time is exceeded, the SAP will give guidance to the caller that it has timed out. Send and disconnect the line with the caller. Further, the SAP notifies the NSP of the disconnection, and the NSP deletes the corresponding waiting call from the waiting state management.

[0035]

As described above, according to the present invention,
When the user makes a call to a specific number where the reception line is all busy, the guidance for a waiting connection is sent and the waiting time is timed. If the reception line becomes available within a predetermined time Since the line is connected, the contractor of the specific number call connection service can make a user who cannot connect the line stand by, and increase the chances of acquiring customers without increasing the number of lines for reception.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing an example of an embodiment of the present invention.

FIG. 2 is a control flowchart in the system of FIG.

FIG. 3 is a diagram showing how to manage the number of waiting registrations.

FIG. 4 is a diagram showing how waiting guidance is sent when it is possible to confirm that the carrier's line is all busy by only NSP access.

FIG. 5 is a diagram showing how waiting guidance is sent when it is not possible to confirm that the carrier's line is fully busy with only NSP access.

FIG. 6 is a diagram showing how a waiting call is connected.

[Explanation of symbols]

10, 20 ... Subscriber exchange station, 30 ... Service control station (N
SP), 40 ... Service Control Station (NSSP), 50
... common line signaling network, 61, 62 ... telephone, 63 ... control terminal.

─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Tsuneyuki Harada 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation (72) Inventor Shigeru Miki 3-19-3 Nishishinjuku, Shinjuku-ku, Tokyo No. 2 Nihon Telegraph and Telephone Corp. (72) Inventor Tsuyoshi Imagaki 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Nihon Telegraph and Telephone Corp. (56) Reference JP-A-2-10957 (JP, A) JP 58-30261 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04M 3/42-3/58

Claims (4)

(57) [Claims] 1. An idle state of a telephone line of a specific number call connection is determined in a specific number call connection service in an intelligent network composed of a subscriber switching center, a service control station, a service control central office and a common line signaling network. If there is no available line, the waiting guidance is sent to the destination telephone line and held, and if an idle line occurs within the specified time, the destination telephone line is connected to the available line. Otherwise, the waiting connection method characterized by disconnecting the destination telephone line. 2. The information according to claim 1, wherein the information of the held waiting call is registered and used for the judgment of an idle state, and the registration is deleted when the line is connected or disconnected. Waiting connection method. 3. The waiting connection method according to claim 2, wherein an upper limit value of the number of waiting registrations is set, and when a call is received exceeding the upper limit value, BT connection is made. 4. The waiting connection system according to claim 3, wherein the upper limit of the number of waiting registrations can be arbitrarily set by the control terminal of the contractor.