JPH11205832A - Outgoing call incoming number conversion device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent call disconnection due to useless billing and use of a useless telephone line. An extension number of an extension terminal 4 and an external telephone number are stored in advance in a table 1a. The PBX 1 determines whether or not the external telephone number is stored in the table 1a when an external line is transmitted from the calling side extension terminal 4. If the external telephone number is stored in the table 1a, the external telephone number is used without calling the external line. Extension terminal 4 of the extension number corresponding to
On the other hand, and, if not stored, calls the external telephone number. When a call is received by the extension terminal 4 having the extension number corresponding to the external telephone number, the extension number is notified to the calling extension terminal 4 by a voice message or display. When "Call stop" is received from 4, the extension reception is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a private branch exchange (PB)
The present invention relates to an outgoing call destination number conversion device in X).

[0002]

2. Description of the Related Art Generally, a PBX controls an external line connection between a telephone line subscribed to a general contract of a public network and a dial-in service and an extension terminal, and a call connection of an extension connection between a plurality of extension terminals. be able to. Then, when subscribing to a dial-in service provided by a public network such as NTT (Nippon Telegraph and Telephone Corporation), an outside line number (dial-in number) equal to or greater than the number of the subscribed telephone line is acquired by the subscription contract and a plurality of PBXs are obtained. Can be assigned to each of the extension terminals. In the communication sequence of the dial-in service, when an outside line caller calls the extension terminal with a dial-in number, the public network transmits an incoming signal to the PBX, and the PBX responds to this by sending a response signal. Is returned to the public network, and the public network responds by transmitting a child number (dial-in number) to the PBX, and the PBX calls the extension terminal having this number. Therefore, according to such a service, it is possible to directly make an incoming call to an extension terminal without arriving at an exchange when an outside line is received.

[0003]

However, in the conventional PBX, the user of the extension on the calling side does not know the extension of the extension on the called side but dials the dial-in number on the public network of the extension on the called side. In such a case, there is a problem that charges are made by the public network. Also, if the number of telephone lines is, for example, one line and the line is a dial-in service line, when the calling extension terminal makes a call to the public network dial-in number of the called extension terminal, the PBX is set to that number. A call can be made to the public network via one line, but during this call, there is a problem that the call to the called extension terminal cannot be connected because the one line is busy.

The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide an incoming call number conversion device which can prevent useless charging and useless use of a telephone line for disconnection of a call. .

[0005]

According to the present invention, in order to achieve the above object, an extension number of an extension terminal and an external telephone number are stored in association with each other in advance, and when an extension is transmitted from the extension terminal to the extension terminal. In this case, an incoming call is made to an extension terminal without transmitting an outside line. That is, according to the present invention, the storage means for storing the extension number of the extension terminal and the external telephone number in association with each other in advance, and when an external line is transmitted from the calling extension terminal, the external telephone number is stored in the storage means. And a control means for determining whether or not the call is stored and, when the call is stored, receiving an incoming call to an extension terminal having an extension number corresponding to the outside telephone number.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing a PBX and its outgoing incoming call number conversion table as an embodiment of the outgoing incoming call number conversion apparatus according to the present invention, and FIG. 2 specifically shows a process of the PBX in FIG. FIG.

In the example shown in FIGS. 1 and 2, five physical lines 3-1 to 3-5 are provided between a PBX 1 of a certain office and a public network (NTT exchange) 2. Then, in accordance with the contract with the public network 2, the line 3-1 "03-123-22"
22 is set as a dial-in line, and this line 3-1 has three dial-in numbers “03-123-2”.
222 "," 03-123-2223 "," 03-12 "
3-2224 "is set. Further, the two lines 3-2 and 3-3 “03-123-3333” are provided by NTT.
Is set as a representative handling service, and a dial-in line different from the line 3-1 “03-123-2222” is set. In addition, three dial-in numbers “03-123-3333”, "03-123-
3334 "and" 03-123-3335 "are set. Remaining 2 lines 3-4, 3-5 "03-123-4
“444” and “03-123-5555” are general subscriber contract lines, and are not set as dial-in lines or representative handling lines.

Next, the setting of the extension terminal 4 will be described. For example, the PBX 1 operates as an extension terminal 8
Telephones 4 (extension numbers “100” to “107”) are connected, and each of the telephones 4 is used by each of six users (Mr. A to F) as described below. Alternatively, an outside line number including the above-mentioned dial-in number is set as in the following table 1a on a memory constituting storage means (not shown) connected to the PBX 1.

In such a configuration, when an external line is transmitted from the extension terminal 4, the PBX 1 determines whether or not the external telephone number is stored in the table 1a. A call is made to the extension terminal 4 having the extension number corresponding to the number, and if not stored, a call is made to the external telephone number. In addition, when an incoming call is made to the extension terminal 4 having the extension number corresponding to the external telephone number,
The extension number is notified to the calling extension terminal 4 by voice message or display, and during the notification, the calling extension terminal 4 is notified.
When the "call cancellation" is received from, the extension reception is stopped.

[0010] The extension number and the external telephone number stored in the table 1a can be registered, changed, and deleted. In addition, whether or not the extension number is notified to the calling extension terminal is determined. Can be erased.

Next, referring to FIG. 2, the operation of this embodiment when an outside line is transmitted will be specifically described in comparison with a conventional example. In the case of the extension transmission and the extension reception, when all the lines are “vacant”, the connection is “connectable” and “no charge”, and the description is omitted. (1) In the case of Mr. A → Mr. A, the extension "100" of Mr. A and the extension "102" of Mr. B share the same dial-in line 3-1. In the conventional example, the line 3-1 is busy. , “No connection” and “No charge”. On the other hand, in the present embodiment, since the telephone number of the call destination is recorded in the table 1a shown in FIG. 1, this is converted into the extension "102" and the extension is terminated. Therefore,
“Connectable” and “No charge”.

(2) In the case of Mr. A → C. (3) In the case of Mr. A → E. (4) In the case of Mr. C → A. (5) In the case of Mr. C → D. (6) Mr. C → E In the case of Mr. (7) In the case of Mr. E → A. (8) In the case of Mr. E → C. (9) In the case of Mr. E → F. In any case, the dial-in line of the calling extension and the called extension. Therefore, in the conventional example, “connection is possible” and “there is a charge”. On the other hand, in the present embodiment, since the telephone number of the call destination is recorded in the table 1a shown in FIG. 1, this is converted into an extension number and an extension is received. Therefore, "connection is possible" and "no charge".

[0013]

As described above, according to the present invention, the extension number and the extension telephone number of the extension terminal are stored in advance, and when the extension terminal sends an extension to the extension terminal, the extension is not transmitted. Because I made the extension terminal receive a call,
It is possible to prevent call disconnection due to useless charging and use of a useless telephone line.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a PBX and its outgoing incoming call number conversion table as an embodiment of a calling incoming call number conversion device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram specifically showing a process when the PBX in FIG. 1 transmits an outside line.

[Explanation of symbols]

 Reference Signs List 1 PBX (control means) 1a Table (storage means) 4 Extension terminal

Claims (3)

[Claims] A storage means for storing an extension number of an extension terminal and an external telephone number in association with each other in advance, and when an external line is transmitted from a calling extension terminal, the external telephone number is stored in said storage means. Control means for judging whether or not the call has been stored, and, if the call has been stored, causing the extension terminal having the extension number corresponding to the outside telephone number to receive a call. 2. The control means determines whether or not the external telephone number is stored in the storage means when an external line is transmitted from the calling extension terminal. 2. The outgoing call destination number conversion device according to claim 1, wherein a call is made to the outside line telephone number. 3. The control unit according to claim 1, wherein when the extension terminal having the extension number corresponding to the external telephone number is called, the control unit notifies the calling extension terminal of the extension number. The incoming call number conversion device as described.