JP2000115381A - Private automatic branch exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a private automatic branch exchange, with which a caller can discriminate whether or not the caller agrees with transfer of its call in the case that the private automatic branch exchange receives an incoming call from the caller when an absence transfer mode is set. SOLUTION: The private automatic branch exchange is provided with a transfer destination information table 107 that stores transfer destination information, such as telephone numbers of transfer destinations of all extension telephone sets to which an absence transfer mode is set, an OGM transmission means 108 that transmits an OGM to a caller extension telephone set, and an LCD display means 109 that displays a transfer destination telephone number to which the incoming call received by a called extension telephone set is transferred on an LCD of the caller extension telephone set. When an extension telephone set 102 set to the absence transfer mode receives an incoming call, the telephone set 102 sends an OGM to the caller extension telephone set 101. When the caller determines whether or not the caller agrees with transfer of its call addressed to the extension telephone set 102 to other extension telephone set, the private automatic branch exchange retrieves a transfer destination table 107 for acquiring a transfer destination telephone number of the call addressed to the extension telephone set 102, displays the telephone number of the transfer destination of the received incoming call on the LCD of the caller extension telephone set 101 to indicate explicitly the transfer destination of the caller.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a private branch exchange.

[0002]

2. Description of the Related Art In a conventional private branch exchange, an extension telephone that has received a call from an extension telephone can transfer the call by setting call forwarding.

Hereinafter, the configuration will be described with reference to FIG. In the figure, 600 is a private branch exchange, and 601 and 602 are extension telephones. The private branch exchange 60
0 indicates a line trunk unit 603 that controls an interface with a line, line circuit units 604 and 605 that control an interface with the extension telephones 601 and 602, a call path switch unit 606 that performs switch control of a call path, Storage means 607 for storing control information; OGM sending means 608 for sending OGM to the calling extension telephone; said trunk line section 603, line circuit sections 604 and 605, call path switch section 606, storage means 607 , Outgoing message (hereinafter referred to as "0GM") transmitting means 608.

The private branch exchange 6 constructed as described above.
At 00, the extension phone 602 sets call forwarding,
The operation when an incoming call is received from the extension telephone 601 will be described.

When there is an incoming call from the extension telephone 601 to the extension telephone 602, the OGM transmitting means 608 transmits a voice message to the extension telephone 601 indicating that the call forwarding is being set. If the caller hears the OGM and wants to transfer it because it is an emergency call, the OGM
Key for transmitting a transfer request in accordance with
(Key in 01) is pressed. The private branch exchange 600
When a transfer request from the extension telephone 601 is received, transfer processing is performed to the set transfer destination. If the caller does not transfer after listening to the OGM, the caller does not transfer the call by hanging on the calling extension telephone.

[0006] Thus, even when the call forwarding is set, it is possible to select whether or not to perform the forwarding process according to the judgment of the caller.

[0007]

However, in the above-mentioned conventional private branch exchange, although the caller can determine whether to agree to the transfer of the called extension, detailed information on the transfer destination of the called extension is not obtained. It is impossible to know. The caller
The criteria for deciding whether to agree to the transfer of a called extension are whether the transfer is charged (whether the transfer is to an outside line), or whether the called party is currently in a meeting ( (Whether or not the transfer destination is an extension telephone in a conference room) depends on the information of the transfer destination. If the information is ambiguous, it is difficult for the caller to judge.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to provide a private branch exchange having a call forwarding function which enables a caller to know information on a transfer destination of a called extension. Things.

[0009]

In order to achieve this object, a private branch exchange according to the present invention comprises an LCD for a calling extension telephone.
LCD display means for displaying the telephone number of the transfer destination of the called extension is provided, and if there is an incoming call during the call forwarding setting, an OGM is sent to the calling extension telephone, and the caller makes the called extension according to the OGM. When it is determined whether or not to agree to the transfer, the telephone number of the transfer destination of the incoming extension is displayed on the LCD of the calling extension telephone, so that the transfer destination is clearly indicated to the caller.

[0010] According to the present invention, when a call extension is set for call forwarding, a local call automatic forwarding function having a call forwarding function that allows a caller to know information on the transfer destination of the call extension. An exchange can be provided.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a central office trunk section for controlling an interface with a central office line, a line circuit section for controlling an interface with an extension telephone, and a switch control of a communication path. A call path switch unit, a transfer destination management table storing transfer destination information of extension telephones, a storage unit for storing call control information, and an OGM.
OGM sending means for sending a call extension to the calling extension telephone, LCD display means for displaying the transfer destination telephone number of the incoming extension on the LCD of the calling extension telephone, the office line trunk section, line circuit section, call path switch section, Storage means, OGM sending means, L
A central control unit for controlling the CD display means is provided, and when there is an incoming call while the call forwarding is set, an OGM is sent to the calling extension telephone.
A private automatic exchange that displays a telephone number of a transfer destination of a called extension on the LCD of the calling extension when determining whether the caller agrees to transfer the called extension according to the OGM, When the call extension is set for call forwarding, there is an effect that the caller can know the information of the transfer destination of the call extension and, based on the information, can select whether or not to agree to the transfer.

According to a second aspect of the present invention, in the first aspect of the present invention, a message recording / playback unit for storing a message from the calling extension telephone, and a caller ID of the calling extension telephone are received. A caller ID continuation display means that keeps displaying on the LCD is provided. When a caller presses a transfer refusal key according to OGM when an incoming call is received during call forwarding, a voice message from the caller is recorded. A private automatic exchange that performs processing and keeps displaying the caller ID of the calling extension telephone on the LCD of the called extension telephone.
If a call is forwarded and rejected during Call Forwarding,
It has the effect of notifying the called party that there is an incoming call in the absence of the call and also notifying the caller ID of the calling extension telephone so that it is easy to call the calling party again.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a configuration diagram of a private branch exchange according to Embodiment 1 of the present invention.

As shown in FIG. 1, this private branch exchange 1
Reference numeral 00 denotes a line trunk unit 103 which controls an interface with a line, line circuit units 104 and 105 which control an interface with extension telephones 101 and 102, a call path switch unit 106 which controls a switch of a call path, and A transfer destination information table 107 storing transfer destination information such as transfer destination telephone numbers of all the extension telephones to which the transfer is set; OGM transmitting means 108 for transmitting OGM to the calling extension telephone; LCD display means 109 for displaying the transfer destination telephone number of the incoming extension on the LCD of the extension telephone, storage means 110 for storing call control information, said central office trunk section 103, line circuit sections 104 and 105, communication path A switch unit 106, an OGM transmission unit 108, an LCD display unit 109, and a central control unit 111 for controlling the storage unit 110. It is.

The private branch exchange 1 constructed as described above.
The operation of 00 will be described. FIG. 2 is a flowchart of the process of the call forwarding function when there is an incoming call to an extension for which call forwarding is set, and FIG. 3 is a transfer destination telephone number of all extension telephones for which call forwarding is set. FIG. 4 is an explanatory diagram of a transfer destination information table 300 storing information such as information on a transfer destination;

The extension telephone 102 sets the transfer destination to "extension number 1".
15 is an extension telephone set for call forwarding. When there is an incoming call from the extension telephone set 101 to the extension telephone set 102, the central control unit 111 searches the transfer destination table 107 (step 201 in FIG. 2), and confirms that the extension telephone set has been set to call forwarding. An OGM transmission request including the caller ID of the calling extension telephone set 101 is transmitted to the OGM transmission means 108 (step 20 in FIG. 2).
2). OGM sending means 108 which has received the OGM sending request
Sends a voice message notifying that the call forwarding is being set to the designated extension telephone 101 (step 204 in FIG. 2). At the same time as sending the message, the central control means 111 transmits the transfer destination telephone number of the extension telephone 102 obtained from the transfer destination information table 107 and the calling extension telephone 1
A transfer destination display request is transmitted to the LCD display means 109 with the caller ID of 01 (step 20 in FIG. 2).
3). When receiving the transfer destination display request, the LCD display means 109 displays the transfer destination telephone number of the called extension telephone 102 on the LCD of the designated calling extension telephone 101 in the line circuit unit 1.
04 (step 205 in FIG. 2).
When the calling party disconnects the calling extension telephone set 101 on-hook or the like, the transfer can be rejected. When the transfer is agreed, when the caller presses the key for requesting the transfer according to the OGM, the central control means 111 performs the transfer process.

In any case, after the OGM is sent to the calling extension telephone set 101, the calling extension telephone set 1 is kept until an external event such as on-hook or pressing of a transfer request key occurs.
01 is displayed on the LCD of the telephone number of the transfer destination of the extension.

(Embodiment 2) Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

FIG. 4 is a block diagram of an automatic private branch exchange according to a second embodiment of the present invention. FIG. 5 is a diagram showing a case where a caller refuses transfer when an incoming call arrives at an extension for which call forwarding is set. It is a flowchart of the process when it is selected.

As shown in FIG. 4, this private branch exchange 4
00, the message recording / reproducing unit 412 for storing the message from the calling extension telephone 401 and the caller ID of the calling extension telephone are continuously displayed on the LCD of the called extension telephone in the private branch exchange according to the first embodiment. The feature is that the cola ID continuation display means 413 is provided.

The private branch exchange 4 constructed as described above.
The operation of 00 will be described. When the extension telephone 402 is set for call forwarding, and when there is an incoming call from the extension telephone 401 to the extension telephone 402, the OGM sending means 408 sets the call forwarding to the extension telephone 401 in the same processing as in the first embodiment. Is transmitted (step 504 in FIG. 5), and the LCD display means 409
Is displayed on the LCD of the calling extension telephone 401 as the called extension telephone 4.
02 is displayed via the line circuit unit 404 (step 505 in FIG. 5). When the caller who confirms it presses the rejection key according to OGM,
A transfer rejection request is transmitted to the central control unit 411 via the line circuit 404 (step 506 in FIG. 5). Upon receiving the transfer rejection request, the central control means 411 transmits a message recording request to the message recording / reproducing unit 412 with the caller ID of the calling extension telephone 401 and the caller ID of the called extension telephone 402 (FIG. 5). Step 50
8), together with the cola ID continuation display means 413,
The caller ID of the calling extension 401 and the called extension 4
An LCD continuation display request with a caller ID of 02 is transmitted (step 509 in FIG. 5). Upon receiving the message recording request, the message recording / reproducing unit 412 connects a one-way voice path to the calling extension telephone 401 and records the voice from the calling extension telephone 401 (step 51 in FIG. 5).
0). Also, the cola ID that has received the LCD continuation display request
The continuation display means 413 displays the designated incoming call extension 40
The caller ID of the calling extension telephone 401 is displayed on the LCD 2 via the line circuit unit 405, and is continuously displayed on the LCD until the called party presses the message playback key of the called extension telephone 402 (FIG. 5 step 511).

[0022]

As is apparent from the above description, according to the present invention, when an incoming call arrives at an extension telephone set for call forwarding, an OGM is sent to the calling extension telephone, and the caller is notified of the OGM. When determining whether to agree to the transfer of the called extension in accordance with the above, the transfer destination of the called extension can be indicated to the caller by displaying the transfer destination telephone number on the LCD of the calling extension. Has the effect that the caller can easily determine whether to forward or not, and if the caller determines not to forward it, a process of recording a voice message from the caller is performed. At the same time, by displaying the caller ID of the calling extension on the LCD of the called extension, it is possible not only to confirm that the call was received while the called party was absent, but also to specify the telephone number of the calling extension. Can do Since a capacity, while also known caller ID of the calling extension telephone with notifying that there is an incoming call in the absence the called party, an effect that can be easily call back the calling party has.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a private branch exchange according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing processing of a call forwarding function when an incoming call is received at an extension for which call forwarding is set in the private branch exchange;

FIG. 3 is an explanatory view of a transfer destination information table storing transfer destination information such as a transfer destination telephone number of all extension telephones for which call forwarding is set in the private branch exchange;

FIG. 4 is a configuration diagram of a private branch exchange according to a second embodiment of the present invention.

FIG. 5 is a flowchart showing a process in a case where a caller selects rejection of transfer when an incoming call is received at an extension for which call forwarding is set in the private automatic exchange;

FIG. 6 is a configuration diagram of a conventional private branch exchange.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 private branch exchange 101 extension telephone 102 extension telephone 103 central office trunk unit 104 line circuit unit 105 line circuit unit 106 call path switch unit 107 transfer destination information table 108 OGM transmission unit 109 LCD display unit 110 storage unit 111 central control unit

Claims (2)

[Claims] A line trunk unit for controlling an interface with an office line, a line circuit unit for controlling an interface with an extension telephone, a communication path switch unit for controlling a communication path switch, and transfer destination information of the extension telephone. A storing means for storing the stored transfer destination management table, call control information, an outgoing message transmitting means for transmitting an outgoing message to the calling extension telephone, and an incoming call to the LCD of the calling extension telephone LCD display means for displaying a telephone number to which the extension is to be transferred, and a central control section for controlling the central office trunk section, line circuit section, communication path switch section, storage means, outgoing message sending means, and LCD display means. When an incoming call is received during Call Forwarding, an outgoing message is sent to the calling extension, and the calling party When deciding whether to agree to the transfer of the incoming call extension phone as out-going messages, private automatic branch exchange, characterized by displaying the telephone number of the destination of the incoming extension on the LCD of the calling extension telephone. 2. A message recording / playback unit for storing a message from a calling extension telephone, and a caller I of the calling extension telephone.
Cola I that keeps displaying D on the LCD of the called extension
If a caller presses a transfer refusal key in accordance with an outgoing message when a call is received during a call forwarding, a message recording process is performed and an LCD of the called extension telephone is provided. 2. The caller ID of the calling extension telephone is continuously displayed on the display.
Automatic private branch exchange as described.