JPH1079791A - Specific number call connection control method and apparatus for implementing the method - Google Patents

Abstract

(57) [Summary] [Problem] Even if a call connection request from a caller is made while the callee is busy, it is not necessary to call the caller again,
Also, when a call is received by setting up a call receiver in each region, it is not necessary to notify the caller of the telephone number of the reception telephone set in each region, and the incoming call is made based on the connection request of the callee. Provided is a method for controlling a connection of a specific number call by caller charging, which does not miss a call, and an apparatus for realizing the method. A control station (1) stores call connection processing information (connection time zone information, call allowable area information, subscriber telephone number (plural), etc.) of a specific number designated by a called party,
When the caller 5 dials a specific number, the caller 5 receives the specific number and the calling area information via the subscriber exchange 2 and converts the number into a number conversion unit 11, a conversion control unit 12, and a call connection instruction unit 1.
3 to automatically connect to an empty line by referring to the call connection processing information and the idle / busy state of the called party. In this case, the caller charges the caller in full.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a call connection method and apparatus in a network having a plurality of subscriber exchanges accommodating a plurality of callers and a plurality of callees, and more particularly, to a call connection method and apparatus in an arbitrary subscriber exchange. The specified number call of the called party is received by the called party's telephone number according to the call connection processing information specified by an arbitrary called party and stored in advance in the network, and the caller is charged for the call charge. And a device for implementing the method.

[0002]

2. Description of the Related Art Conventionally, when another incoming call is generated by a called party who is busy, the incoming call is temporarily stored in a network, and when the called party's line becomes available, the network is disconnected from the network. There is known a connection method for calling and connecting the caller and the callee. In this connection method, the connection of the network is simply performed in the order of accepting calls in the network, and the call connection based on the connection request of the called party such as receiving only a call from a specific originating area is not performed. Not considered at all. As a means for solving the above problem, a call connection based on a connection request of a called party includes, for example, "Murase,
Ikejiri, Takei; Service customization and custom control, NTT Technical Journal, Vol. 1, No. 9, 1989.1
2, "Uesaka, Amitani; Toll-free service ahead of IN service, NTT Technical Journal, Vol. 1, No.
9, 1989.12 ", a method is known in which a caller's area is limited based on a connection request of a callee and the call is connected to a telephone number specified by the callee. These documents describe a toll-free service that is effective for telemarketing.For example, in the aftercare of products, the reception of maintenance for their products is made known to the same number nationwide, and telephone calls from customers are made. It is disclosed that prompt response is possible by accepting at the nearest business office, and that a connection destination is determined based on information such as the line occupancy status, time, and transmission area.

[0003]

According to the prior art (toll free service, etc.) disclosed in the above-mentioned document, even if a call connection request from a caller is made while the callee is busy, the caller is not notified. Is not necessary again, and
When a call is received by setting up a receiver in each region, it is not necessary to notify the caller of the telephone number of the reception telephone set in each region. A call connection without missed calls can be made, but in this case, the call charge is charged entirely to the called party, and no consideration is given to billing the calling party. That is,
Even in the case of a call connection with a specific number such as toll free, it is sometimes appropriate for the caller to bear the full call charge, but such a case is not considered at all in the above prior art. . The present invention eliminates the need for a caller to make a call again even if a call connection request from the caller is made while the callee is busy, and also establishes a call receiver for each region to receive a call. In this case, it is not necessary to notify the caller of the telephone number of the reception telephone set for each region, and the caller is charged the full amount of the call fee without missing the incoming call based on the connection request of the callee. An object of the present invention is to provide a specific number call connection control method and an apparatus for realizing the method.

[0004]

In order to achieve the above object, a specific number call connection control method according to the present invention comprises a plurality of subscriber exchanges (2, 3) accommodating a plurality of callers and a plurality of callees. ) And a control station (1) for performing call connection control, and a specific number (for example, different from a general subscriber telephone number transmitted from an arbitrary subscriber exchange (for example, 2) designated by a called party in advance) , 0AB0-******), and converts the call to a subscriber telephone number associated with the specific number to perform a call connection. Transmits the specific number received from the caller (5) and the calling area information of the caller to the control station (1) (step 30 in FIG. 2), and the control station (1)
Accumulates call connection processing information (see FIG. 5) including call permission area information and a subscriber telephone number designated in advance by a callee in association with a specific number, and stores the subscriber accommodating exchange (2). Area information and control station (1)
(Steps 32, 34, and 35), and converts the specific number into a subscriber telephone number based on the result of the comparison (step 36). Manage blockage status (Step 4
0) If there is a vacancy, send a call connection instruction to the subscriber exchange (2). The subscriber exchange (2) performs a call connection process corresponding to the specific number according to the call connection instruction received from the control station (1) (step 41). After the end of the call, a call charge is calculated, and the entire amount is charged to the caller (step 42). Further, the call connection processing information further includes a connectable time zone, and the collation is performed on whether or not the call connection request from the caller is included in the connectable time zone (see FIG. 5). Further, as a result of the collation, when the call connection request from the caller is not included in the connectable time zone, the call connection is stopped, and guidance accompanying connection disable is transmitted (steps 33, 55, 74).

[0005] Further, a plurality of destination subscriber telephone numbers corresponding to one specific number transmitted from an arbitrary subscriber accommodating exchange are registered in the control station, and the subscriber telephone numbers are represented as a plurality of representatives having different ranks. If the representative of the first rank is a parent number and the parent number is busy as a result of the selection of the first rank, the next (second rank) child number is selected, and the child number is busy. In this case, the next lower child number is selected (see the flowchart of FIG. 3). Further, the control station registers a plurality of destination subscriber telephone numbers for one specific number transmitted from an arbitrary subscriber exchange, and for each of the subscriber telephone numbers, the outgoing call of the one specific number is registered. An incoming call ratio is provided, and a subscriber telephone number for an outgoing call of the specific number is selected according to the incoming call ratio (see the flowchart of FIG. 4). Also,
A new subscriber telephone number different from the subscriber telephone number is registered in the control station (1), and the specific number is finally changed to the new subscriber telephone number (step 38 in FIG. 2).
39, steps 56 and 57 in FIG. 3, step 7 in FIG.
5, 76).

Further, the specific number call connection control device of the present invention stores a plurality of subscriber exchanges (2, 3) accommodating a plurality of callers and a plurality of callees, and stores call connection processing information to perform connection control. A control station (1) that performs a specific number (0AB0- *) different from a general subscriber telephone number transmitted from an arbitrary subscriber exchange (for example, 2) designated in advance by a called party.
****) is a specific-number call connection device for connecting a call to an arbitrary subscriber telephone number designated by the called party in advance, and is a subscriber exchange which accommodates the calling party (5). 2) means for transmitting the specific number and the transmission area information of the caller when the specific number is received from the caller (5) to the control station (1) (transmission area information transmitting means 9); and the control station (1) Means (call connection processing means 14) for performing a call connection process of a specific number in accordance with an instruction from the control station (1). Means for collating with the call connection processing information designated in advance by the called party (6) stored in 1) (conversion control means 12)
Means for converting a specific number into a general subscriber telephone number designated by the called party based on the result of the comparison (number conversion means 11); and a general subscriber telephone designated by the called party (6) in advance. Means (call connection instructing means 13) for managing the idle / busy state of the number and sending out the call connection to the subscriber exchange (2) based on the call connection processing information, and sending the billing condition to the subscriber accommodation exchange (2) (Charging instruction means 22).

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a control station in a network with call connection processing information (connectable time zone information, at least one call allowable area information, subscriber telephone number, etc.) of a specific number designated by a called party. ) Is stored, and when the caller dials a specific number, the specific number and the transmission area information are received via the subscriber exchange, and the call connection processing information and the idle / busy state of the called party are referred to. And automatically connect to an available line. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a configuration diagram of a network system according to an embodiment of the present invention. In the figure, 1 is a control station for storing call connection processing information of a specific number designated in advance by a called party, 2 and 3 are subscriber exchanges, 4 is a common channel signaling network, 5 is a telephone set of a caller, 6 Is the telephone set of the called party, 7 and 8 are the receiving areas of the subscriber exchanges 2 and 3, respectively. 9 and 10 are receiving the calls for the specific numbers transmitted from the receiving areas 7 and 8, respectively. Transmission area information transmission means for transmitting information to the control station 1.

Reference numeral 11 denotes a number conversion means for judging a transmission area based on information received from the transmission area information transmitting means 9 and converting a specific number into a subscriber telephone number based on the call connection processing information. Distribution of outgoing calls (hereinafter referred to as “wide area representatives”) over a plurality of accommodation areas and outgoing calls (incoming call ratios of a plurality of subscriber telephone numbers having the same specific number) for the specific number calls received from the exchange 2 ( Judgment is made as to whether or not there is registration of incoming call distribution) and whether or not there is registration of conversion to a subscriber telephone number different from the initially selected subscriber telephone number at the designated time (hereinafter referred to as change of reception destination), and number conversion. Conversion control means for instructing the means 11 to convert the number into a subscriber telephone number based on the call connection processing information. Reference numeral 13 denotes the subscriber telephone number converted by the number conversion means 11. Subscriber accommodation switch 2 and 3 manages the empty busy state and determining the connection time of the specific number
Call connection instructing means 22 for issuing a call connection instruction to the subscriber exchange 2 is a charging instructing means for instructing the subscriber exchange 2 to send a charging condition.

Further, reference numeral 14 denotes a call connection processing means for performing call connection, transmission of a busy tone and transmission of guidance in accordance with an instruction of the call connection instructing means 13, and 16 to 18 control units for the control station 1 and the subscriber exchanges 2 and 3. For transmitting and receiving control signals for information transmission to and from each other, 19 is a trunk line for connecting the subscriber exchanges 2 and 3 to each other, and 20 and 21 are subscribed lines. Person exchange 2 and 3
And a subscriber line connecting the caller's telephone 5 and the receiver's telephone 6.

FIG. 2 is a flowchart of the basic operation of this embodiment. FIG. 3 is a flowchart at the time of wide area representative registration according to the present embodiment. FIG. 4 is a flowchart at the time of incoming call distribution registration of the present embodiment. FIG. 5 is a diagram showing an example of call connection processing information stored in a storage device (for example, a database) of the control station 1. The call connection processing information includes, for each specific number, a connectable time zone of the specific number (all of the examples in FIG. 5 are 8:00 to 18:00), one or more allowable call areas, and a destination subscriber telephone number. (Physical number), if the wide area representative (parent, child) is registered, the wide area representative number (physical number), if the incoming distribution is registered, the incoming call ratio for each subscriber telephone number (physical number) (And the order of selection) are registered, and although not shown in FIG. 5, for each subscriber telephone number (physical number), if there is a connectable time zone of the subscriber telephone number and a change destination telephone number, The numbers are also registered.

In the example of the wide area representative number shown in FIG. 5 (b), when the allowable call area is 01, 02, 03, 10 lines in Tokyo, such as (03-3509-xxxx) as the parent representative,
As child representative 1, 10 lines in Nagoya such as (052-211-xxx), and as child representative 2, (06-921-xxx)
×), and 10 lines in Osaka.
In the case of 05,06, (03-3593-x
Xxx) 30 lines in Tokyo, child representative 1 (052-
973-xxxxxx) and 10 Osaka networks such as (06-921-xxx) as child representative 2 are registered.

The example of the incoming call distribution shown in FIG. 5 (c) is as follows.
When 10 lines of Nagoya and 10 lines of Osaka have an incoming call ratio of 1: 1: 1 and the allowable call area is 04,05,06, 30 lines of Tokyo, 20 lines of Nagoya and 10 lines of Osaka are 3: 2: 1.
Is shown in FIG.

Next, the basic operation of this embodiment will be described in detail with reference to the flowchart of FIG. First, a specific number (0AB0-** in this embodiment) is transmitted from the caller's telephone 5.
In the case of ****, 0AB0 transmits, for example, 0570) (step 29). The specific number is received by the subscriber exchange 2 via the subscriber line 20 (step 30).
The transmission area information transmitting means 9 transmits the received specific number and the transmission area information (for example, the telephone number of the caller) obtained from the accommodation area 7 to the control station 1 via the common channel signal network 4 (step 31).

In the control station 1, the call connection instructing means 13 refers to the call connection processing information, and determines whether the specified number is within a connectable time zone based on the received specific number (step 32). As a result of the determination, if the received specific number is not in a connectable time zone, the call connection instructing means 13 instructs the subscriber exchange 2 via the common channel signaling network 4 to send guidance. Upon receiving the instruction, the subscriber's exchange 2 sends a guidance indicating that connection is not possible to the caller's telephone 5 via the subscriber line 20 by the call connection processing means 14 (step 33).

As a result of the determination in step 32,
If the received specific number is in a connectable time zone, the specific number and the transmission area information are sent to the number conversion means 11. The number conversion means 11 first determines whether or not the transmitted accommodation area is a call permitted area of a specific number (step 34). As a result of the determination, when the transmitted accommodation area is not the call-permitted area of the specific number (Step 34: N)
Sends a guidance indicating that connection is not possible to the caller's telephone 5 in the same manner as in the case where the specific number is not in the connectable time zone (step 33). Step 34
As a result of the determination in (2), when the transmitted accommodation area is the call permitted area of the specific number (step 34: Y), the specific number is sent to the conversion control means 12. Upon receiving the specific number, the conversion control means 12 determines whether the wide area representative or the incoming call distribution is registered for the specific number (step 35).

Here, first, the operation in the case where neither the wide area representative nor the incoming call distribution is registered for the specific number (Step 35 in FIG. 2: N) will be described (see FIG. 5A). As a result of the determination, if both are not registered, the specific number is converted into a subscriber telephone number designated by the call connection processing information stored in the control station 1 (in the database thereof) by the called party in advance (step). 36). here,
It is assumed that the subscriber telephone number specified in the call connection processing information is the subscriber telephone number connected to the telephone 6 of the called party.
After being converted to the subscriber telephone number, it is next determined whether or not the subscriber telephone number is in a connectable time zone, as in the case of the specific number (step 37).

If it is not a connectable time zone, guidance is transmitted in the same manner as when the above-mentioned specific number is not a connectable time zone or when the transmitted accommodation area is not a callable area of the specific number (step 33). On the other hand, if the connection is possible, the conversion control means 12 determines whether or not the change of the destination is registered (step 38). It is converted (step 39), and if it is not registered, the subscriber telephone number is sent to the call connection instructing means 13 as it is.

The call connection instructing means 13 manages the idle / busy state of the called party's telephone number via the common line signaling network 4, whereby the subscriber's line 21 connected to the called party's telephone 6 is managed. Knows the state of the empty blockage. It is determined whether there is a free line in the subscriber line 21 (step 40). If there is a free line (step 40: Y), a call connection is instructed to the subscriber exchange 2 (step 41). The call connection processing means 14 of the subscriber exchange 2 causes the subscriber exchange 3 to execute a call connection via the trunk line 19 and connects the telephone 5 of the caller and the telephone 6 of the callee to enable a telephone conversation. .
When the telephone call is completed, the subscriber exchange 2 calculates the telephone charge based on the charging conditions instructed by the charging instruction means 22 of the control station 1 in advance, and charges the caller the entire telephone charge (step 42). If there is no vacant line in the subscriber line 21, that is, if the telephone 6 of the called party is busy (step 40: N), the call connection instructing means 13 instructs the subscriber exchange 2 to transmit a busy tone. Then, the call connection processing means 14 of the subscriber exchange 2 sends a busy tone indicating that the called party's telephone 6 is busy to the calling party's telephone 5 (step 4).
3). According to this embodiment, a call with a specific number from a call permitted area designated by the callee can be received only during the designated call permitted time zone, and the caller can be charged for the call charge.

Next, the operation when a wide area representative is registered for a specific number (step 35 in FIG. 2: Y) will be described with reference to the flowchart of FIG. 3 (FIG. 5).
(B)). In the conversion control means 12 of the control station 1,
First, it is determined whether or not a wide area representative (a representative extending over a plurality of accommodation areas) for a specific number is registered (step 51). If it is determined that the representative is registered (step 51: Y), first, a call is made. Search the parent number from the connection processing information. The searched parent number (step 52) is sent to the number conversion means 11, and the specific number is converted into the subscriber telephone number of the parent number (step 53).

After the conversion into the subscriber telephone number, a time zone in which connection is possible is determined in the same manner as in step 37 of FIG. 2 (step 5).
4) If it is not a connectable time zone, guidance is transmitted in the same manner as when the above-mentioned specific number is not a connectable time zone or when the transmitted accommodation area is not a callable area of the specific number (step 55). If the time period is connectable, the conversion control means 12 determines whether or not the change of the destination is registered (step 56). If the change is registered, the predetermined change destination subscriber telephone number is registered. (Step 57), and if not registered, sends the subscriber's telephone number as it is to the call connection instructing means 13.

The call connection instructing means 13 manages the idle / busy state of the called party's telephone number via the common line signaling network 4, whereby the subscriber's line 21 connected to the called party's telephone 6 is managed. Knows the state of the empty blockage. It is determined whether or not there is a free line in the subscriber line 21 (step 58). If there is a free line, a call connection is instructed to the subscriber exchange 2 (step 59). The call connection processing means 14 of the subscriber exchange 2 causes the subscriber exchange 3 to execute a call connection via the trunk line 19, and the caller's telephone 5 and the receiver's telephone 6
To make a call possible. When the call is completed, the subscriber accommodation exchange 2 sets in advance the charging instruction means 2 of the control station 1.
The call charge is calculated on the basis of the charge condition specified by 2 and the caller is charged the entire call charge (step 60).

As a result of the determination in step 58, the subscriber line 21
If there is no available line, that is, if the telephone 6 of the called party is busy (step 58: N), the conversion control means 12 refers to the connection processing information and determines whether or not the next-rank number is registered (step 61). If the next child number has been registered, the process returns to step 52, and the same operation flow as that of the above-mentioned parent number is repeated. This operation is repeated as many times as it is determined that the next child number is registered. If there is no vacant line (step 58: N) and the subordinate number is not registered (step 61: N), a busy tone is transmitted to the caller's telephone 5 as in the basic operation flowchart (step 62). .

As is clear from the above description, for example, as shown in FIG. 5B, the specific number (0AB0-******)
**), in the permitted call areas 01, 02, and 03, the wide area representative is used as a parent number (03-3509-xxxxxx) in Tokyo 10 lines, and as a child number 052-211-xxx.
×) such as 10 lines in Nagoya, (06-921- ××××)
For example, if you have registered 10 lines in Osaka,
1,02,03 senders are specified numbers (0AB0-***
***), first, the parent number (0
Attempts to connect to one of the 10 lines in Tokyo, such as 3-3509-xxx, and if all 10 lines are blocked, the next child number is (052-211-xxx).
×) and attempts to connect to one of the 10 Nagoya lines, and if the 10 lines in Nagoya are also blocked, the next child number (06-921-XXXX) or the like Attempt to connect to one of the lines. Only emit a busy tone if they are all blocked. As described above, according to the present embodiment, wide area representatives (parent numbers, one or more child numbers) for a plurality of areas corresponding to a predetermined specific number.
By registering call connection processing information such as
When the predetermined specific number is dialed, it becomes possible to check the occupied state of those wide area representative lines and automatically select an empty line to connect. Fees can be charged to the caller.

Next, the operation when the incoming call distribution is registered will be described in detail with reference to the flowchart of FIG. 4 (see FIG. 5C). When the conversion control means 12 determines that the incoming call distribution is registered (step 35 in FIG. 2:
Y, and step 51 in FIG. 3: N), a search is made for a plurality of subscriber telephone numbers of the called party specified by distribution according to the call connection processing information and the incoming call ratio (step 71). When a plurality of calls for a specific number are generated, the plurality of calls are distributed to a plurality of subscriber telephone numbers according to the retrieved incoming call ratio, and are converted into the subscriber telephone numbers by the number conversion means 11 (step 72).

After conversion to the subscriber telephone number, a connectable time zone is determined (step 73) as in step 37 of FIG. 2 and step 54 of FIG. The guidance is transmitted in the same manner as in (1) (step 74). If the time period is connectable, the conversion control means 12 determines whether or not the change of the destination is registered (step 75). If the change is registered, the predetermined change destination subscriber telephone number is registered. (Step 7
6) If not registered, send the subscriber's telephone number as it is to call connection instructing means 13.

The call connection instructing means 13 manages the idle / busy state of the called party's telephone number via the common line signaling network 4, whereby the subscriber's line 21 connected to the called party's telephone 6 can be managed. Knows the state of the empty blockage. It is determined whether or not there is a free line in the subscriber line 21 (step 77). If there is a free line, a call connection is instructed to the subscriber exchange 2 (step 78). The call connection processing means 14 of the subscriber exchange 2 causes the subscriber exchange 3 to execute a call connection via the trunk line 19, and the caller's telephone 5 and the receiver's telephone 6
To make a call possible. When the call is completed, the subscriber accommodation exchange 2 sets in advance the charging instruction means 2 of the control station 1.
The call charge is calculated on the basis of the charge condition specified by 2 and the caller is charged the full amount of the call charge (step 79).

As a result of the determination in step 77, the subscriber line 21
If there is no free line (step 77: N), the conversion control means 12 determines whether or not the secondary distribution destination number is registered with reference to the call connection processing information (step 80), and the secondary distribution destination number is registered. (Step 80: Y)
, An operation flow similar to the original distribution destination number is repeated. This operation is repeated any number of times while it is determined that the secondary distribution destination number is registered. If the line is not available and the secondary distribution number is not registered (step 77: N, step 80: N), a busy tone is transmitted to the caller (step 81). The number of registered subscriber telephone numbers to be distributed and the incoming call ratio specified for each subscriber telephone line can be arbitrarily set. The selection order of the subscriber telephone numbers, the so-called distribution order, can be set arbitrarily, but it is usually desirable to select the order in which the incoming call ratio is high.

[0029]

According to the present invention, any callee accommodated in a general telephone network can be assigned a designated number different from a general subscriber's telephone number in a designated area for calling (a permitted area), a wide area representative, and a distribution of incoming calls. A control station that stores call connection processing information such as a change of reception destination in a network in advance and performs processing such as number conversion control and call connection control based on the call connection processing information in the network is provided. By connecting an incoming call of a specific number to a subscriber's telephone number designated by any callee in accordance with the call connection processing information in the network, the callee can call a caller in a plurality of regions with one identification number called a specific number. There is an effect that the call can be received by the designated subscriber telephone number, and the call charge can be charged to the caller in full. Furthermore, there is an effect that a plurality of incoming calls are not missed due to call connection control such as wide area representation in the network, distribution of incoming calls, etc. In addition, the reception destination can be changed and the call connection can be stopped in a designated time zone. Therefore, it is possible to provide a versatile switching network service that is very useful for the user.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a network system according to an embodiment of the present invention.

FIG. 2 is a flowchart of a basic operation of the embodiment.

FIG. 3 is a flowchart at the time of wide area representative registration according to the present embodiment.

FIG. 4 is a flowchart at the time of incoming call distribution registration of the embodiment.

FIG. 5 is an example of call connection processing information according to the embodiment;

[Explanation of symbols]

 1: Control station 2, 3: Switched subscriber exchange 4: Common line signaling network 5: Caller's telephone 6: Receiver's telephone 7,8: Accommodation area of subscriber accommodation exchanges 2 and 3, 9, 10: Transmission area Information sending means 11: Number conversion means 12: Conversion control means 13: Call connection instructing means 14, 15: Call connection processing means 16-18: Line 19: Relay line 20, 21: Subscriber line 22: Billing instruction means

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kotaro Higashi 3-19-2 Nishi Shinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation

Claims (7)

[Claims] 1. A plurality of subscriber exchanges accommodating a plurality of callers and a plurality of callees, and a control station for performing call connection control, wherein a call is transmitted from an arbitrary subscriber exchange which is specified in advance by the callee. A specific number call connection control method for performing a call connection by converting a call for a specific number different from the specified general subscriber telephone number to a subscriber telephone number associated with the specific number, wherein the subscriber The accommodating exchange transmits the specific number received from the caller and the transmission area information of the caller to the control station, and the control station associates the specific number with at least one of Call connection processing information including call allowable area information and a subscriber telephone number is stored, and the call area information transmitted from the subscriber exchange and the call allowable area information stored in the control station are stored. Collate and collate And converts the specific number into the subscriber telephone number based on the result of the call, manages the idle / busy state of the subscriber telephone number, and sends a call connection instruction and a charging instruction to the subscriber exchange when there is a vacancy. The subscriber accommodation exchange performs a call connection process corresponding to the specific number in accordance with the call connection instruction received from the control station, and further charges a caller generated by the call connection process to a caller. A specific number call connection control method, characterized in that: 2. The call connection processing information further includes a connectable time zone, and the collation is performed on whether or not a call connection request from a caller is included in the connectable time zone. The method for controlling connection of a specific number call according to claim 1, wherein 3. The method according to claim 1, wherein, as a result of the collation, when the call connection request from the caller is not included in the connectable time zone, the call connection is stopped, and guidance accompanying connection prohibition is transmitted. Item 2. The specific number call connection control method according to Item 2. 4. Registering a plurality of subscriber telephone numbers of a plurality of destinations for one specific number transmitted from an arbitrary subscriber exchange in the control station, and using the subscriber telephone numbers as a plurality of representatives having different ranks. If the representative of the first rank is a parent number and the parent number is busy as a result of the selection of the first rank, the next (second rank) child number is selected, and the child number is busy. 4. The specific number call connection control method according to claim 1, wherein in the case, the next child number is further selected. 5. Registering a plurality of destination subscriber telephone numbers for one specific number transmitted from an arbitrary subscriber exchange in the control station, and registering the one specific number for each subscriber telephone number. 5. The incoming call ratio for outgoing calls is provided, and a subscriber telephone number for outgoing calls of the specific number is selected according to the incoming call ratio.
Specific number call connection control method described in the paragraph. 6. A subscriber telephone number to be changed which is different from said subscriber telephone number is registered in said control station, and said specific number is finally changed to said subscriber telephone number to be changed. The specific number call connection control method according to any one of claims 1 to 5, wherein 7. A plurality of subscriber exchanges accommodating a plurality of callers and a plurality of callees, a control station for accumulating call connection processing information and performing connection control, and any subscriber designated in advance by the callee. A specific number call connection control device for connecting a call to a specific number different from a general subscriber telephone number transmitted from an accommodation exchange to an arbitrary subscriber telephone number designated by the called party in advance, comprising: The accommodating exchange, when receiving the specific number from the caller, transmits the specific number and the transmission area information of the caller to the control station, and a call connection process of the specific number according to an instruction from the control station. And a means for performing a billing process, the control station, the calling area information transmitted from the subscriber exchange, the call connection processing information specified in advance by the called party stored in the control station, Collate And means that,
Means for converting the specific number into a general subscriber telephone number specified by the called party based on the result of the collation, and managing the idle / busy state of the general subscriber telephone number specified by the called party in advance. And a means for instructing the subscriber exchange to transmit a call connection and a charging condition based on the call connection processing information.