JP3003644B2 - PBX connection method for small subscribers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a central office
The present invention relates to a BX (Private Branch Exchange), and particularly to an outgoing / incoming call processing method.

[0002]

2. Description of the Related Art Conventionally, a PB that accommodates a large-scale line
A dedicated line is used for communication between X (a form via a public line network) from the viewpoint of operation cost, and communication using an extension number is possible between PBXs.

[0003] A call from a general subscriber to a subscriber accommodated in the PBX or from a subscriber in the PBX to a general subscriber is performed by calling a general subscriber telephone number.

Recently, a specific subscriber among general subscribers accommodated in a central office has been registered in advance, and an extension telephone number accommodated in the PBX is called from the subscriber. A method has been proposed in which an exchange refers to registration data and calls a specific extension subscriber in the PBX by transmitting a general telephone number of the PBX (for example, see Japanese Patent Application Laid-Open No. 7-307799). Also, Japanese Patent Application Laid-Open
JP-A-79378 discloses a system in which a transit exchange is connected to a plurality of subscriber exchanges, in which a small service point unit for processing an intelligent network call is provided in the transit exchange, and a database connected to the transit exchange is provided. There is proposed a system in which a conversion table for realizing an intelligent network service is provided, and the relay exchange functions as an intelligent network compatible exchange.

[0005]

In the case where communication is performed between a PBX and a small subscriber group (such as an office) that does not require the installation of the PBX, a PBX-PBX is required.
The use of a dedicated line between them is very expensive in view of the communication usage rate. For this reason, in the case of line connection by calling a general subscriber number (external line treatment), there are inconveniences such as that services provided by the PBX cannot be received.

Further, as proposed in the above-mentioned Japanese Patent Application Laid-Open No. 7-307799, data of a specific subscriber is registered on the exchange side, and a PB is issued in response to a call from the specific subscriber.
The telephone number information obtained by adding the extension number to the general subscriber number of X is P
A service to be sent to the BX is required. In the case of this method, the telephone number transmitted from the exchange is "PBX"
Is the general subscriber number + extension number, which means that the number of transmission digits will increase. This increase in the number of transmission digits varies slightly depending on the architecture of the exchange, but the impact on software and hardware can be avoided to a considerable extent. The same applies to the process of combining the general subscriber number and extension number.

Accordingly, the present invention has been made in view of the above problems, and has as its object to provide a small subscriber group (such as an office) easily without preparing a dedicated line. It is an object of the present invention to provide a PBX connection system which enables connection setting with a PBX, allows a general subscriber to directly connect a line by dialing a PBX extension number, and receives services provided by the PBX. .

[0008]

[Summary of the invention To achieve the above object, Stated its outline, to the exchange, the correspondence between the general subscriber number and PBX subscriber number which was provided with a database for registering Yes, that having a following features.

According to the present invention , a small
Handle calls from specific subscribers belonging to a model subscriber group
In order to do this, the general subscribers of both the specific subscriber and the PBX
The first database for registering the correspondence of numbers
Comprising, registered in the first database the particular subscriber
When a call is made from the first
General subscriber of PBX to be transferred with reference to the database
Search for a number, and if the result of the search is a PBX in your own station,
Make a call to the PBX.
The telephone number is transmitted to another exchange, and the call from the specific subscriber is issued.
In the case of a call, a dial tone is output to the PBX without outputting a dial tone.
Make a call, and on the PBX side,
After answering the call, output a dial tone before
It prompts the extension number to be sent to the specific subscriber, enters the reception state,
The specific subscriber dials the extension number, and further processing is performed.
The process is similar to the process of connecting PBX extensions.
The connection between the specific subscriber and a PBX extension is performed .

The present invention also relates to a PBX ,
The specific subscriber number outside and the extension number for handling in the PBX
A second database for registering the assigned information
Provided, there is a call from the PBX extension, calling the extension number
For searching and collating the second database
If the extension is confirmed, the specific
By sending the subscriber's general subscriber number to the exchange,
A feature is that connection from a PBX extension to a specific subscriber is enabled .

[0011]

Embodiments of the present invention will be described below.

[1] Connection from a specific subscriber to a PBX extension: In order to process an outgoing call from a specific subscriber in an exchange, to register a correspondence between a general subscriber number of the specific subscriber and a general subscriber number of the PBX. (See FIG. 1 and FIG. 2B).

When a call is made from a registered specific subscriber, the exchange refers to the database to search for a general subscriber number of the PBX to be transferred.

As a result of this search, if it is a PBX within its own station, it immediately calls the PBX, and if it is outside its own station, it sends the searched incoming number to another exchange.

Further, when a call is made from a specific subscriber,
Call the PBX without outputting a dial tone. The dial tone is transmitted from the called PBX to the specific subscriber.

On the other hand, on the PBX side, a dial tone is output for an arbitrary called number out of a plurality of registered general subscriber numbers after the exchange responds to the call, and the extension number is transmitted to the specific subscriber. And enter the receiving state. In response to this, the specific subscriber dials the extension number, and the subsequent connection to the extension becomes a normal extension process.

In the embodiment of the present invention, when a call (off-hook state) from a specific subscriber is detected by the exchange, a call is made by transmitting the general subscriber number of the PBX to be connected which is referred to in the database. , After the PBX response, the communication state between the specific subscriber and the PBX is established. on the other hand,
In PBX, after answering the call from the exchange,
Sends a dial tone to specific subscribers and prompts them to call an extension. Subsequent PBX processing is exactly the same as the connection processing between extensions.

[2] Connection from PBX extension to specific subscriber: In PBX, specific subscriber number outside PBX and PB
A database for registering information to which an extension number to be handled in X is assigned (the database of FIG. 1 and the database of FIG. 2)
(See (c)).

Then, when a call is made from an extension, the above database is searched for the extension number transmitted, and if the extension number to be verified is confirmed, the general subscriber number of the specific subscriber corresponding to the extension number is exchanged. Send to In an exchange, it can be handled by a normal exchange process.

When a call is made from the extension of the PBX and the extension number of the destination is transmitted, the PBX starts searching the database. As a result, if the extension number of the destination exists in the database, the general corresponding to the extension number is used. The subscriber number is sent to the exchange. At this time, no special processing is required on the exchange side, and the processing is exactly the same as the normal call processing.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; FIG. 1 is a diagram showing a network configuration according to an embodiment of the present invention.

Referring to FIG. 1, one embodiment of the present invention is:
Exchanges 2a, 2b, and 2c are connected to the public line network 1, and each exchange 2a, 2b, and 2c has a database 3
a, 3b and 3c. There is also a general subscriber 6a accommodated in the exchange 2a.
Is composed of a small subscriber group 7. Here, the small subscriber group refers to a plurality of general subscribers used for the same purpose, for example, subscribers in the same office.

There are PBXs 4b and 4c accommodated in the exchanges 2b and 2c, respectively.
Has databases 5b and 5c, respectively. P
The BXs 4b and 4c accommodate subscribers 6b and 6c, and the subscribers 6b and 6c accommodated in these PBXs 4b and 4c.
And a user group 8 composed of a small subscriber group 7, and all of these subscribers can be connected by extension numbers.

The basic operation of one embodiment of the present invention will be described below.

[1] First, among the general subscribers 6a accommodated in the exchange 2a, the subscribers 6 accommodated in the PBX 4b
The connection to b will be described.

The correspondence between the subscriber 6a and the general subscriber number of the PBX 4b is registered in advance in the database 3a provided in the exchange 2a.

In this state, when the exchange 2a detects a call from the subscriber 6a (a state in which the receiver is picked up), the exchange 2a starts searching the database 3a.

As a result of the search, when the general subscriber number of the PBX 4b corresponding to the subscriber 6a who made the call is found,
The exchange 2a sends the general subscriber number to the exchange 3b accommodating the PBX 4b.

When the exchange 3b receives this number from the exchange 2a, the exchange 3b connects the call of the PBX 4b. PBX
In step 4b, a dial tone is output to urge the subscriber 6a who has made the call after answering the call to send an extension. After this state, when the calling subscriber 6a transmits an extension number, the PBX 4b is connected to a predetermined subscriber 6b by a normal extension connection process.

[2] Next, from the subscriber 6b accommodated in the PBX 4b, the general subscriber 6a accommodated in the exchange 2a
The connection to the server will be described.

The correspondence between the telephone number of the subscriber 6a and the extension number assigned thereto is registered in advance in the database 5b provided in the PBX 4b.

In this state, the PBX 4b starts searching for a general subscriber number corresponding to an extension number by using the database 5b that receives the extension numbers of the calling and called parties from the subscriber 6b accommodated therein. .

As a result, when there is a general subscriber number to be collated, the general subscriber number is transmitted from the PBX 4b to the exchange 2b. The exchange 2b receiving this number is connected to the subscriber 6a via the exchange 2a in accordance with a normal call processing procedure.

As a result of the search of the database 5b, if the corresponding extension number does not exist, the subscribers 6b and 6c in the PBXs 4b and 4c are operated in the same manner as the normal extension connection processing.
Make a direct call to.

The operation sequence of the present embodiment described above with reference to FIG. 1 will be described more specifically. FIG.
(A) is an example of a telephone number system corresponding to the configuration of FIG.
FIG. 2B shows a database 3 connected to the exchange 2a.
FIG. 2C shows an example of the information content of the PBX 4b.
2 shows an example of information content of a database 5b connected to the database 5b.

FIG. 3 is a diagram showing the general subscriber 6a of FIG.
FIG. 4 is a diagram showing a call connection sequence to the BX subscriber 6b, and FIG. 4 is a diagram showing a call connection sequence from the PBX subscriber 6b to the general subscriber 6a in FIG.

In the database 3a of the exchange 2a, FIG.
As shown in (b), the subscriber number (0473-66-8) of the PBX 4b indicating the transfer destination corresponding to the subscriber number (0471-77-2222) of the subscriber 6a of the exchange 2a.
888) is registered.

The subscriber number of the subscriber 6a (04
71-77-3333), the subscriber number (0473-66-888) of the PBX 4b as the transfer destination.
8) is registered.

Next, regarding the general subscriber 6a accommodated in the exchange 2a, (0471-77-2222) of the general subscriber 6a and (0471-77-3333) of the general subscriber 6a are small as described above. It consists of a scale subscriber group 7. Note that the subscriber 6a (0471-7)
7-1111) does not belong to any PBX,
All outgoing calls from the subscriber 6a to the PBXs 4b and 4c are treated as outside lines as in the past.

The PBXs 4b (0473-66-8888) and 4c accommodated in the exchanges 2b and 2c, respectively.
(0473-66-9999) have databases 5b and 5c, respectively. In this database 5b,
As shown in FIG. 2 (c), a general subscriber number (0471-66-8888) indicating a transfer destination with respect to the extension number (3388) given to the subscriber 6a accommodated in the exchange 2a.
Is registered. Also, for the subscriber 6a,
Similarly, a general subscriber number (0471-77-333) indicating the transfer destination is provided for the extension number (3399) given.
3) is registered.

Subscriber 6 accommodated in PBX 4b, 4c
All the subscribers of the user group 8 composed of the small subscriber groups b and c can be connected by extension numbers.

[1] First, (047) of the general subscriber 6a
1-77-2222) to PBX4b (0473-66)
-8888) of the subscriber 6b (extension: 11
The connection to 22) will be described with reference to FIGS.

The subscriber 6a (0471-77-222)
2) Outgoing call (Hook up, off-hoo)
When the exchange 2a detects k), the search of the database 3a is started, and as a result of the search, the general subscriber number (0473-66) of the PBX 4b corresponding to (0471-77-2222) of the called subscriber 6a. -8888), the exchange 2a sends the general subscriber number (0473-66-8888) to the exchange 3b accommodating the PBX 4b.
Is sent.

Upon receiving this number, the exchange 3b receives the PBX.
4b (0473-66-8888) (ringing from the exchange 2b to the PBX 4b in FIG. 3).
In this state, the communication path between the subscriber 6a and the PBX 4b is established.

Thereafter, the PBX 4b outputs a dial tone to prompt the subscriber 6a who has called after answering the call to make an extension.

After this state, the calling subscriber 6a transmits the extension number (1122) of the subscriber 6b, and the PBX 4b is connected to the desired subscriber 6b by ordinary extension connection processing. It will be.

[2] Next, PBX4b (0473-66)
-8888) of the subscriber 6b (extension: 11
33) to (0471-77-33) of the general subscriber 6a.
The connection to 33) will be described with reference to FIGS.

The PBX 4b is connected to the subscriber 6
When the PBX 4b receives the extension number (3339) of the called side after the call from (extension: 1133) of b, the PBX 4b refers to the database 5b (see FIG. 2 (c)), and the extension number (33).
A search for a general subscriber number corresponding to 39) is started. As a result, if there is a general subscriber number to be compared, the PBX
4b transmits the searched general subscriber number (0471-77-3333) to the exchange 2b.

The exchange 2b receiving this number is connected to the subscriber 6a via the exchange 2a in accordance with a normal call processing procedure.

[3] Next, a description will be given of the case of connection within the PBX 4b (with the subscriber 6b). When the extension number (1133) after the call from the subscriber 6b is received and searched in the database 5b, if the corresponding extension number does not exist, the PBX 4b is processed in the same manner as the normal extension connection processing.
A call is directly made to (1133) of the subscriber 6b within the group.

[0051]

As described above, according to the present invention,
This has the effect of making it possible to easily set up a connection with a PBX for a small subscriber group (such as an office) without preparing a dedicated line. As a result, a general subscriber can make a line connection by directly dialing a PBX extension number, and can also receive services provided by the PBX.

[Brief description of the drawings]

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

FIG. 2 shows a telephone number system according to an embodiment of the present invention, the exchange 2a.
FIG. 6 is a diagram showing an example of registration information of a database 3a of the PBX 4b.

FIG. 3 is a diagram showing a calling sequence from a general subscriber in one embodiment of the present invention.

FIG. 4 is a diagram showing a calling sequence from a PBX-accommodating subscriber in one embodiment of the present invention.

[Explanation of symbols]

 1 Public Line Network 2a Switch 2b Switch 2c Switch 3a Database 3b Database 3c Database 4b PBX 4c PBX 5b Database 5c Database 6a Subscriber 6b Subscriber 6c Subscriber 7 Small Subscriber Group 8 User Group

Claims (2)

(57) [Claims] In a switching system, a first subscriber for registering correspondence between general subscriber numbers of both a specific subscriber and a PBX in order to process a call from a specific subscriber belonging to a small subscriber group or the like. When a call is made from a specific subscriber registered in the first database, the exchange refers to the first database to determine a general subscriber number of the PBX to be transferred. Search, and if the result of the search is a PBX in its own station, the PB
X, call the called number to another exchange if it is outside the own station, and call the PBX without outputting a dial tone in the case of a call from the specific subscriber, On the PBX side, after responding to the call from the exchange, a dial tone is output to prompt the specific subscriber to transmit an extension number, and the reception state is entered. The specific subscriber dials the extension number, and the subsequent processing is performed. The connection between the specific subscriber and the extension of the PBX is performed by a process similar to the connection process between extensions of the PBX.
BX connection method. 2. The PBX has a second database for registering information to which a specific subscriber number outside the PBX and an extension number to be handled in the PBX are registered, and a call is made from an extension of the PBX. When the second database is searched and the extension number to be checked is confirmed, the general subscriber number of the specific subscriber corresponding to the extension number is transmitted to the exchange, so that the PBX is transmitted.
A PBX connection method wherein connection to a specific subscriber from an extension is enabled.