JPH04104696A - Origination and termination control system of private branch exchange system - Google Patents

Abstract

PURPOSE:To effectively utilize the function buttons of a multifunctional telephone set which is included in a large-capacity PBX by handling plural trunk lines together with one function button. CONSTITUTION:Many multifunctional telephone sets(MFT) 200 are included as extension terminals in the automatic private branch exchange(PBX) 100, the trunk lines A1-An and B1-Bn are grouped, and plural trunk line groups are set. Pieces of identification information on the individual trunk line groups are assigned to the function buttons of each terminal equipment 200 to obtain trunk line buttons corresponding to the trunk line groups, and the trunk line buttons are operated to perform origination and termination using the trunk lines A1-An and B1-Bn in the corresponding trunk line groups. Therefore, all the trunk lines A1-An and B1-Bn can be connected to one MFT 200 which has a limited number of function buttons. Consequently, the function buttons of the MFTs 200 in a large-scale private branch exchange system can be utilized effectively.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a call control method for a private branch exchange system (prior art).The button telephone system is easy to operate and has excellent convenience, but it has many problems. It is difficult to create a capacity system. Therefore, users who require a large-capacity telephone system usually install a private branch exchange telephone system (or private branch exchange system) using a private automatic branch exchange.

In order to use a private branch exchange system and still enjoy the same operability and convenience as a pushbutton telephone system, so-called "push-telephone operation of a private branch exchange system" is carried out.

The button telephone system was originally intended to effectively utilize a plurality of office lines with a plurality of telephones, and is composed of a plurality of so-called button telephones and a main device that controls them. Button telephones are set up to correspond to individual office lines.
It is equipped with a station line button and a hold button for selecting a station line when making or receiving a call, and the user can directly select a station line or hold a call by operating these buttons.

In order to obtain the same operability as the button telephone system described above in a private branch exchange system using a private branch exchange (hereinafter referred to as PBX), it is sufficient to perform "button telephone operation" as follows, for example. . First, a telephone (terminal) equipped with a plurality of function buttons, such as a so-called electronic button telephone or a multifunction telephone, is housed in a PBX. In this type of telephone, when an individual function button is pressed, button information corresponding to the function button is sent out. The functions assigned to each function button are registered as information in the PBX, and
By extracting this registered information based on the received button information, the BX recognizes the function assigned to the push button,
By executing a program corresponding to the function, a line is connected or put on hold according to the function.

Then, a specific station line is assigned to each function button so that each function button has the function of a station line button. That is, if a function button corresponding to a central office line of a telephone is pressed, the central office line and the telephone are connected.
Each telephone can be operated in the same manner as the button telephone system described above, thus enabling "button telephone operation."

As described above, the conventional push-button operation of the private branch exchange system was carried out by assigning central office lines to the function buttons of telephones in a one-to-one ratio.

An example of this conventional operation will be explained with reference to FIGS. 7 and 8.

FIG. 7 shows the configuration of an example of a private branch exchange system to which a conventional central office line originating/receiving control method based on button telephone operation is applied.
A plurality of office line trunks (COT) TIT2, T3, T4, T5, T to which C3, C4, C5, and C6 are connected, respectively.
61. , , a plurality of multi-function telephone control circuits (MTLIN) each having a multi-function telephone (MFT) 200 connected thereto.
) 122.

Figure 8 shows the MFT2 used in the 7th system.
FIG. 2 is a board view of a function button panel showing the arrangement and function assignment of function buttons of the MFT 200. As shown, the MFT 200 is equipped with a large number of function buttons F'1 to F'n arranged in a matrix. Each of these function buttons is provided with a display lamp, and the display regarding the function button is made by changing the lighting color of the display lamp, or whether it is lit or blinking.

With the above configuration, the function tF' of MF T 200 is
Buttons F'l, F°2, F'3, of 1 to F'n
F'4, F"5, F'6, , each station line C1,
C2, C3, C4, C5, C6 are assigned respectively, and the display lamps (the buttons themselves are configured as display lamps) of these station line buttons F'l to F"61., The status of the station line corresponding to each of these buttons (therefore, the station line trunk assigned to that button) is displayed, such as whether it is free, in use, or incoming.

A call to a central office line can be made by pressing a central office line button whose vacant status is displayed and capturing the corresponding vacant central office line.

To respond to an incoming call on the central office line, press the central office line button that corresponds to the incoming central line and displays an incoming call.

(Problems to be Solved by the Invention) The above-mentioned conventional technology has been widely and generally adopted, but has the following problems.

(1) Since the number of function buttons that one MFT is equipped with is limited, when using a large capacity PBX to which many office lines are connected, all of those office lines can be accommodated in the function button. Therefore, there is a risk that the vacant office line will not be used effectively.

(2) Even if one MFT can accommodate all the necessary office lines, if the majority of the function buttons are occupied by the office line buttons, then the There is a possibility that other services using function buttons cannot be used effectively.

In other words, in the conventional call control system described above, large capacity PBX
It is not suitable for large-scale private branch exchange systems that use MF and accommodate a large number of central office lines.
It was difficult to use the T's function buttons effectively.

It is therefore an object of the present invention to solve the above problems and, in particular, to
In a private branch exchange system using lPBX, the P
An object of the present invention is to provide a call originating/receiving control method for a private branch exchange system that can effectively utilize the function buttons of a multifunction telephone housed in a BX.

(Means for Solving the Problems) In order to achieve the above object, a call control method for a private branch exchange system according to the present invention provides a method for controlling calls in and out of a private branch exchange system, in which a terminal device having a plurality of function buttons capable of registering functions is installed in an automatic branch exchange. In a private branch exchange system that accommodates a plurality of office lines and a plurality of office lines, the plurality of office lines are divided into groups to set a plurality of office line groups, and each of the function buttons of the terminal is assigned an individual The identification information of the station line group is assigned to the station line button corresponding to the station line group, and by operating the station line button, calls can be made or received using the station line belonging to the corresponding station line group. be.

(Function) Therefore, according to the present invention, since a plurality of office lines are collectively accommodated in one function button, it is possible to accommodate a large-scale private branch exchange system using a large-capacity PBX and accommodating a large number of office lines. However, if necessary, it is possible to accommodate all the office lines in one MFT, which is equipped with only a limited number of function buttons. Therefore, it is possible to perform call control that can suitably be applied to large-scale private branch exchange systems, and it is also possible to
You will be able to use the function buttons effectively.

(Embodiment) Hereinafter, a call control system for a private branch exchange system according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6.

1. Configuration of Private Branch Exchange System FIG. 1 is a configuration diagram of an example of a private branch exchange system to which a call control system according to an embodiment of the present invention is applied.

In FIG. 1, elements that are the same as or correspond to each element in the private branch exchange system of FIG. 7 described above are denoted by the same reference numerals.

As shown in the first part, this private branch exchange system includes a private branch exchange (PBX) 100, and this PBX
Xl 00 has many multifunction telephones (MFT) 20
0 is accommodated as an extension terminal.

The PBX 100 includes a communication path switch l○2, a central control unit (CC) 104, and a memory device (MM) 106, which are connected to each other via a control bus 108.

P BX 100 further includes a large number of central office lines Al-An.

B1 to B n , , , are accommodated, and their office lines are PBXloo's office line tiger > 9 (COT) TA
1~T An % T B l - T B n s
The tails are connected to , , , and , respectively. On the other hand, M F T
200 C, PBXloo multi-function telephone control circuit (
MTL IN) 122, respectively.

Figure 2 shows the MFT2 used in the system in Figure 1.
FIG. 2 is a board diagram of a function button panel showing the arrangement and function assignment of function buttons of 00.

As shown in FIG. 2, the function button panel of the MFT 200 is provided with function buttons F1 to Fn arranged in a matrix. Each of these function buttons is equipped with an indicator lamp made of an LED (light emitting diode) (the button itself is configured as an indicator lamp), and the indicator lamp can be lit in different colors or in different colors. Displays related to each function button are displayed depending on the type of blinking.

Regarding the assignment of functions to those function buttons F1 to Fn, in particular, in the method of this embodiment, the above-mentioned office lines accommodated in PBXloo are grouped into groups A1 and B1 to An.
Bn is grouped into a plurality of station line groups, such as group B.

Furthermore, in the method of this embodiment, in order to more appropriately respond to call control of the Daikichi i private branch exchange system,
In addition to this grouping of office lines, the large number of MFTs 200 accommodated in the PBX 100 are also grouped into a plurality of extension groups, such as group a5 and group b.

In this way, after setting the office line group and extension group respectively, when assigning office line information to each function button of the MFT200 and making it a office line button, each office line is assigned as before. Instead, central office line groups are allocated, and the allocation is done in units of extension groups. In other words, M belonging to the same extension group
For the FT200s, the assignment of office line groups to function buttons is the same, thereby improving the efficiency of call processing.

In addition, the "assignment" of the station line group here refers to the PBX
This is done by registering the function in "(7) rMFT function button registration data area" in the storage device 106 of LOO, and this data area will be described in detail later.

In the system of this embodiment, when setting the central line button, the central line transmission button and the central line response button are also set separately. To do this, first, consider, for example, which department in the office each extension group will be assigned to.
Specify the callable office line group and response available office line group that are permitted for the extension group.

Here, the "callable office line group" refers to the office line group that MFTs belonging to the extension group can use (fit) to make calls to the office line (i.e., are permitted to use). The "answerable office line group" refers to an office line group in which MFTs belonging to that extension group can respond to incoming calls to that office line (that is, are permitted to respond).

The calling-capable station line group and the response-capable station line group can be specified arbitrarily. Both station line groups may be equal to or different from each other, and
The number of office line groups designated as the callable office line group or the answerable office line group may be one, a plurality of office line groups, or all office line groups within the local private branch exchange system. Furthermore, when an extension group exclusively for responses is provided, the number of callable station line groups designated for that extension group may be set to "0".

The example of function assignment shown in FIG. 2' is for the MFT 200 belonging to extension group a. Here, extension group a includes office line groups A and 81 as callable office line groups, and office line groups 81 and 81 that can respond. It is also assumed that station line groups A and B are designated as line groups. In case 2, one button F2 of the function buttons F1-Fn of the illustrated MFT 200 is used as a station line response button (hereinafter referred to as a station response button) corresponding to the station line group A, and another button F2 corresponds to the station line group A. One button F3 is used as the station selection button corresponding to station line group B.
The functions are registered in the FT function button registration data area. Also, one of the function buttons of this MFT200
One button Fl is functionally registered as a local line calling button (hereinafter referred to as a local calling button).

In this way, according to the method of this embodiment, one MFT2
00, by simply setting one station call button for each available station line group and in addition, setting one station call button for that MFT200, it is possible to connect to a large-capacity PBX. It is possible to accommodate a large number of central office lines, and therefore only requires the use of a relatively small number of function buttons.

In the following description, the term "station line button" will be used to generally refer to the "station response button" and "station release button" described above.

2. Regarding the etiquette of the MFT station button for sending and responding,
In the above-described 1rXJ and the private branch exchange system shown in FIG. 2, an outline of the operation method when making a local line call or a local line response using the local call button or local answer button of the MFT 200 will be explained.

The PBX executes various control processes in response to the operation of the station line button on the MFT 200, and during the control process, the PBX
Although various control data areas in X are used, their control processing will only be briefly explained here and will be explained in detail later.

To make a call to the local line, use the local call button F1.

When the station calling button F1 of the MFT 200 in FIG. A vacant office line trunk is acquired from among the office line trunks, and it becomes possible to use the office line trunk to make a station line call. Also, if all of the office line trunks included in the callable office line group are blocked, the MFT of extension group a
There is no central office line trunk that can be captured from
The display of the LED is controlled so that the display LED of the local station button F1 displays "all busy".

To respond to an incoming call on the local line (local line response), local response buttons F2 and F3 are used. When a call arrives on a station line that belongs to a response-capable station line group (station line groups A and B in the two cases), for example, if the incoming station line belongs to station line group 4, this station The incoming call is displayed on the display LED of station S[]F2 corresponding to line group A. Then, by pressing the call response button F2 while displaying the incoming call, the user can respond to the incoming call.

3. State management of central office line trunks In private branch exchange systems using Daikichi ji PBX, the number of central office lines accommodated, and therefore the number of central office line trunks of the PBX, is usually very large, and the central office line trunks are This also increases the effort required for control processing for state management.

In this embodiment, in order to efficiently manage the status of such a large number of central office line trunks, the following two systems are used: The trunk's central office line response queue is used. In these systems, trunk memories provided for each office line trunk for managing the state of each office line trunk are linked using pointers in the trunk memories.

The term "idle chain" means "chain of idle central office line trunks," and only one such chain is formed in all 20 PBXs 100. Further, the central office line response queue means "response queue for a terminating central office line trunk," and is formed for each individual central office line group, and a plurality of queues are formed for the entire PBXloo.

These will be explained in more detail below.

311]+11 is an explanatory diagram of an idle chain. Similar to a normal private branch exchange, the PBXloo storage device 106 includes a plurality of trunk memories (TRMs) 132 for storing information about individual central office line trunks (hereinafter simply referred to as trunks). ing. Each of these trunk memories 132 is associated with a specific trunk, and each trunk memory has an area 132a at the beginning for storage position information of the corresponding trunk, and then an area 132a for the next pointer. areas 132b are provided, respectively.

Furthermore, a head pointer 134 for the idle chain is provided at a predetermined location in the storage device 106.

Here, for convenience of explanation, it is assumed that the PBX 100 is equipped with N trunks, and those trunks and their corresponding trunk memories have consecutive numbers from No. 1 to No. N. Assume that it is numbered.

When starting the P BX 100, the idle chain
initial settings are performed. This is head pointer 13
4, set the start location of the first trunk memory, and set the next pointer 1 in this first trunk memory.
32b is set to the start location of the second trunk memory, and in the same manner, the next pointer of the first trunk memory is set to the start location of the i+1th trunk memory. This allows all N trunk memories to be connected as one chain via pointers. Note that the next pointer of the last trunk memory is set to [Oj. The above is as shown in FIG. 3+1+.

When a trunk transitions from an empty state to a blocked state, the trunk memory 132 corresponding to the trunk is extracted from the idle chain, and when the trunk returns to an empty state, the trunk memory 132 corresponding to the trunk is extracted from the idle chain. 1
32 is again connected to this idle chain. This allows all free trunks in PBXloo to
Its corresponding trunk memory 132 becomes connected to this idle chain.

Therefore, by searching the trunk memory along this idle chain according to the setting data in the head pointer and next pointer, only vacant trunks can be searched very efficiently. This is a method of searching for free trunks that is particularly suitable for high-capacity PBXs with a large number of trunks.

To remove trunk memory from the idle chain, do the following: For example, if the trunk memory to be removed is the first one in this idle chain, the next pointer of the i-1 trunk memory is
+ Just rewrite to the first location of the first trunk memory. In particular, when removing the first trunk memory, the head pointer 134 is rewritten, and
When extracting the last trunk memory, the next pointer of the immediately preceding trunk memory may be set to rOJ.

To reconnect a trunk that has returned to an empty state to an idle chain, move the next pointer of the trunk memory at the end of the idle chain, which was previously set to "0," to the first location of the trunk memory to be newly connected. All you have to do is rewrite it and set the next pointer of this newly connected trunk memory to "O". This connects the latter trunk memory to the end of the idle chain. Note that if a pointer is provided to store the location of the last trunk memory, the second reconnection process can be performed quickly.

FIG. 3(2) is a diagram illustrating the central line response waiting queue. A central office line response queue is formed for each central office line group.
Used as follows:

First, when a trunk detects an incoming call on the central office line and transitions from an idle state to a response waiting state, the trunk memory 132 corresponding to the trunk is extracted from the idle chain and the central office line to which the trunk belongs is extracted. It is connected to the end of the station line response waiting queue corresponding to the group.

Second, in the MFT, if the station button corresponding to the station line group in which there is an incoming trunk (waiting for a response) (that is, the station button that is displaying an incoming call) is pressed, that station line The corresponding trunk in the trunk memory at the head of the group's central office line response waiting queue is activated M F T (the M
FT), and its trunk memory is removed from the central line response queue.

Similar to the idle chain, the station line response waiting queue is formed by connecting trunk memories via pointers, and extraction is also performed by rewriting the pointers. However, since it is cleared at the time of initial setting of the PBX and is formed for each office line group, the head pointer 136 for the office line response waiting queue is divided into multiple numbers, each of which corresponds to an individual office line group. Has a memory location. Regarding this, see the 31st! ! As shown in +21.

By using the central office line response waiting queue, responses to the grouped central office lines can be easily and suitably made.

4. According to the method of this embodiment that is referred to by the central control unit of the PBX, the storage device 106 of the second PBXloo stores the following data when controlling the originating and receiving calls from the central office line and the response to the receiving calls from the central office line. Various control data areas are set, which are referred to by the central control device l○4. These data areas will be explained below with reference to FIG. 4 (11 to (5)).

(1) Extension/office line group data area (4th fK (1)
) In this data area, group identification information indicating which extension group or office line group each of the extension lines (part MFT 200) and office lines accommodated in the PBXloo belong to is stored as data. has been done.

This group identification information is set and stored in advance prior to operation of the private branch exchange system. Further, this data area search is performed based on the accommodation position of each extension line or central office line.

(2) MFT function button registration data area (4th X+ t2
i) In this data area, i functions to be assigned to each function button of the MFT 200 are registered as data. In other words, this function registration assigns the function to each function button.

As mentioned above, in the method of this embodiment, when assigning functions related to station line transmission and station line response to the function button of MFT2QQ and making it the station line button, the function assignment is This is done for each extension group.

Therefore, in this data area, one block is allocated for each extension group, and each block is used for button registration corresponding to the number of function buttons provided on one MFT 200. It should contain at least enough memory locations to store data. In these memory locations, for each function button, the button type (for example, in the case of a local line button, the local call button or local call button) is indicated, and the button type is also indicated. If it is a "station response button", the response-capable station line group corresponding to that station line button is also registered as data.

This data area search is performed based on extension group identification information (extension group number) and button identification information (order number).

The data in the second data area is response-capable office line group identification data indicating "one response-capable office line group for each extension group." Already mentioned! ! IC<, MFT 200 can respond (is allowed to respond) 1
The available office line group E is designated for the extension group to which the MFT 200 belongs. therefore,
! One block is allocated for each extension group as shown, with each block containing at least as many bits as there are central office line groups that can be included in two private branch exchange systems. Each of these bits corresponds to an individual office line group, and depending on whether the value of a certain bit in the block is -l; or "Ol," the office line corresponding to that bit is It is shown whether the group is designated as the 5-responsive station line group Σ.

The data in this data area is callable office line group identification data that indicates the "callable office line group" for each extension group. As described above, the "callable office line group" that the MFT 200 can use (is permitted to use) for making office line calls is specified for the extension group to which the MFT 200 belongs. Therefore, allocate one block for each extension group as shown,
Each block includes at least as many bits as there are central office line groups that can be included in the private branch exchange system. Each of these bits corresponds to an individual station line group, and the value of a certain bit within a block is ``1'' or ``0''.
'' indicates whether or not the office line group corresponding to that bit is designated as a ``callable office line group'' for the extension group corresponding to that block.

(5) Office line group free/blocked data area (Figure 4 (5)
)) In the method of this embodiment, since the station line buttons are assigned to each station line group, the ``vacant/blocked'' status of each station line is independent of the ``vacant/blocked'' status of each station line.
Vacant/'busy' status is managed.

In other words, if there is at least one trunk in an empty state among the plurality of trunks belonging to a central office line group, that central office line group is considered to be in an empty state, and on the other hand, all trunks are considered to be in a blocked state. Sometimes, it is assumed that the station line group is in a blocked state.

The "office line group free/busy data area" indicates the free/busy status of each office line group in units of extension groups. That is, this area is assumed to contain at least as many bits as there are extension groups that can be included in the private branch exchange system, and each bit is made to correspond to an individual extension group, and the value of each bit is ``0'' or ``0''. 1", the callable office line group assigned to the extension group corresponding to that bit (if multiple callable office line groups are assigned to that extension group, those callable office line groups) It is made to indicate whether at least one of the possible station line groups is in a twin state.

Therefore, the data of this "office line group vacant 7' cold area" is updated according to the state of the trunk, and is used when controlling the all-busy display of the station button. How this data is created will be discussed later in Section 2).

In the previous section, the PBX
The various control data areas referenced by the loo central controller 104 have been described. In this section, a control device for controlling the operation of each multifunction telephone control circuit (MTLIN) 122, which is provided in each multifunction telephone control circuit (MTLIN) 122, is configured to control the operation of the MTLIN 122 according to changes in trunk status accompanying central office line origination/termination or response. The various control data areas referred to when controlling the display lamp (LED) of the station line button of the MFT 200 will be explained with reference to FIGS. 5(1) to (3).

(1) Station line button registration data area (Fig. 5 (1)) This data area is registered in the rMFT function button registration data area that is exclusively referred to by the central controller 104, as explained in connection with Fig. 4 (2). Of the data that has been posted, data related to station line buttons has been transcribed and registered.

However, this is an MT that controls each MFT200.
Since this is a data area for reference by LIN122,
The data in this area is stored not for each extension group but for each individual MFT' 200. Therefore, as shown in the figure, one block is allocated for each MFT, and at the beginning of the block, extension group identification information indicating the extension group to which the MFT belongs is stored. Stores data.

This "station line button registration data" is used when restarting PBXloo or changing data.
(Fig. 4 (1)) and rMFT function button registration data” (Fig. 4
Figure (2)). Further, this data area search is performed using MFT identification information (MFT number) and button identification information (button number) as shown in the figure.

(2) Open wide button LED control data area (Figure 5 (2)) 1 open wide button LED control data stored in this data area
is the “responsive station line group identification data area j (fourth
The data is the same as that stored in Figure (3)), and the structure of the data area is also the same.

Therefore, the "open/wide button LED control data J for this MTLIN 122 is simply the above-mentioned "responsive station line group identification data" from the dedicated memory area of the central controller 104.
It is merely a copy transferred to a common memory area that can also be referenced by TLIN122.

Therefore, as shown in the figure, one pool per extension group,
The bits in each block correspond to individual station line groups, and the value of a certain bit in the block is "1".
or "0" indicates whether or not the office line group corresponding to that bit is designated as a "responsive office line group" for the extension group corresponding to that block. Further details about this data area can be found in section 4C+
Please refer to the description of "responsive station line group identification data area" explained regarding No. 31.

This data area contains "KaihirotLED formation data."

is a data area that the MTLIN 122 refers to when controlling the LED of the open wide button, and will be described in detail later.

As will be explained in detail later, the display LED on the local station button indicates "all busy", and the display LED on the wide button indicates "incoming call"
Display. The display controls for displaying these are:
The central controller 104 and the 1TLIN 122 cooperate.

That is, central control unit 5! The i'l 04 determines which station line button should display what kind of display, and writes the data of the determination result into the common memory space for MFTII@ that can be referenced from the MTLIN 122. On the other hand, each MTLINL
22 reads the data from this memory space and controls the display state of the LED of the station line button of the MFT 200 connected to the MTLIN 122 in accordance with the data.

Therefore, in this way, the common memory space for MFT control is transferred from the central control unit l○4 to the M TLIN12 via the
The data passed to 2 is the LED control order and L that should be sent from Naoto to the latter. The 2nd rLEDj control order Σ includes data for the local button and the wide button. There are 1 set of each, and the central control unit 104 manages each set of them.They will be explained individually below.

(1) Local button LED control order (6th iKfl) The local button LED IJ circle order is data consisting of a plurality of bits, including at least as many bits as the number of extension groups that can be set in this private branch exchange system. Each bit corresponds to an individual extension group, and depending on whether the value of the bit is [1j or 7o =], when the station of the extension group corresponding to that bit goes out of order, the "all busy display 3" display will be displayed. It is designed to indicate whether the control should be performed or whether it should be displayed as "vacancy" without it.

(2) Open Wide Button LED Control Order C Fig. 6 (2) Open Wide Button LED Control Order is a plurality of bits including at least as many bits as the number of central office line groups that can be set in this private branch exchange system. The data consists of Each bit corresponds to an individual station line group, and the value of the bit consists of 1. or 70 J, should the display control be performed so that the open wide button to which the station line group corresponding to that bit is assigned will display "incoming call display", or should it not be performed and the "no incoming call display 2" and I try to show my strength.

7. Station, line originator control, station line receiving side, response control Next,
Controls for making, receiving, and answering calls over the central office line will be explained.

In the method of this embodiment, since the station line button does not have a one-to-one correspondence with a specific station line as in the past, when a press of the station line button is detected, regardless of whether it is the local station button, For example, processing is performed to acquire one free trunk from among the callable station line group (one or more) assigned to that button, and if it is an open/wide button, Processing is performed to determine which trunk of the available station line group assigned to that button is to be subjected to response control.

In addition, the control of making/receiving and answering calls is started when the central office line button is pressed or the arrival of a central office line call. The display of the display lamp (LED) of the station line button is also controlled. This display control will be explained in the next section.

The central control unit 104 detects the pressing of the central office line button or the occurrence of an incoming call through the execution of a "terminal monitoring program." This program monitors operations such as hooking each MFT 200 and pressing various buttons, and changes in the status of each office line trunk.
04 periodically starts and executes this program.

If the press of any function button of the MFT 200 is detected by executing this program, the "rMFT button analysis program" is started, and if the transition of the state of the central office line trunk is detected, the "state analysis program" is started. ”.

To explain this point in more detail, the MFT20 consists of
When a function button consisting of 0 is pressed, the button information of the pressed function button is notified from the MTLIN 122 connected to that MFT to the central control unit 104, and this notification is If detected, the central controller 104 starts the rMFT button analysis program.

When this program is executed, the above-mentioned r MFT function button registration data area in the storage device 106 (see FIG. 4 (1)
) is referenced, and the button type of the pressed function button is checked. The central control unit 104 branches the subsequent control depending on the button type, and in particular, if it recognizes that the type of the pressed function button is a local station button, it starts the "local line transmission control program", Also, if it recognizes that it is an open wide button, it starts the ``station line response control program''. These programs will be explained in more detail later.

Further, when an incoming call occurs on a central office line trunk, the central control unit 104 detects a change in the state of the central office line trunk when executing a "terminal monitoring program" and starts a "state analysis program". Then, by running this program, if it recognizes that the state change is an incoming call from a central office line,
Start the “Central Line Incoming Control Program”. This program will also be explained in detail later.

Next, each control of calling, receiving, and answering will be explained individually.

(1) Local line origination control To make a station line origination, press the local origination button on the MFT 200. Then, the central control unit 104 detecting the pressing of the local station button starts the "local line transmission control program" through the above-described procedure.

When this program is executed, a central office line trunk for outgoing calls is captured, and both this central office line trunk and the activation MFT whose central office button has been pressed are brought into a central office line outgoing state.

In order to capture the originating central office line trunk, first, the above-mentioned "extension' central office line group data area" (
Extracting extension group information indicating the extension group to which the originating extension (i.e., the activated MFT) belongs from FIG. 4 (1)),
Furthermore, the callable office line group designated for the extension group of the activated MFT is extracted from the above-mentioned "callable office line group identification data area" (4th z +41).

Next, referring to the head pointer 134 of the idle chain (in FIG. 3) of the above-mentioned office line trunk, select the second idle chain from the head of this idle chain? The first trunk that belongs to the outgoing callable station line group extracted above is extracted from among the empty trunks. When doing this, the station line group to which each trunk belongs can be determined based on storage position information 132a of the corresponding trunk of the trunk memory set in each trunk memory 132 configuring the idle chain. This can be determined by searching the "extension/office line group data area" (FIG. 4 (1)) based on .

Once one free trunk is extracted in this way, the trunk memory of that trunk is extracted from the idle chain, and the trunk and the starting MFT which is the outgoing extension are
The acquisition of the central office line is completed by making the transition to the central office line transmission state. Since the subsequent control is conventional and common, its explanation will be omitted.

If all the station line trunks in this callable station line group are blocked by the above trunk capture, then
The display lamp of the pressed station button indicates that all calls are in progress. Display control for this will be described later.

When there is an incoming call on the central office line, the central control unit 10 detects it.
4 starts the "office line incoming control program" through the above-mentioned procedure.

When this program is executed, the central office line trunk that has received an incoming call is made to transition to a response waiting state, and data processing is performed to manage the state of the central office line trunk.

This data processing is performed on the idle chain of the office line trunk and the office line response waiting queue as described in the third fork and (2). First, the trunk memory of the central office line trunk where the call was received is extracted from the idle chain. Next, the station line group to which this incoming station line (the station line trunk to which the call was received) belongs is entered as the internal line, and the 7th station line group data area (No. 4).
)), and the trunk memory is connected to the queue corresponding to the extracted office line group among the office line response waiting queues (31K (21)) formed for each office line group.

Following this, a call termination control process, which will be described in detail in the next section 7, is performed, and when that is completed, this "office line call termination control program" ends.

(3) Control of responding to incoming calls on the central office line To respond to an incoming call on the central office line, press the open button on the MFT 200 that is displaying the incoming call. Then, the central control unit 104 that detected the press of this wide open button,
The "station line response control program" is started through the above-mentioned procedure.

When this program is executed, the central office line trunk that belongs to the central office line group assigned to the pressed open wide button and that is in the receiving (waiting for response) state, and the answering MFT (M when the opening wide button was pressed)
F T ) 200 is connected, the communication state is changed, and data processing is performed to manage the state of the office line trunk.

To explain this in more detail, it consists of M F T 200
When the "office line response control program" is started by pressing the open wide button consisting of (4th prong (1)), answer extension (
The extension group information indicating the extension group to which the responding MFT belongs (extension that accommodated the responding MFT) is extracted, and furthermore, this responding MFT
From the data in the aforementioned rMFT function button registration data area (No. 41K+21) corresponding to the extension group of T,
Extract the target station line group (the station line group that can respond) that is assigned to the pressed open wide button. Next, the central office line response waiting queue (third [Z
+21), the station line response waiting queue corresponding to this target station line group is checked, and if that queue is incoming station line 1.
If it is formed by only one L, the central line, and
If there are a plurality of incoming office lines and a queue is formed by these office lines, the incoming office line located at the head of the queue is removed from the queue.

Then, a communication path is formed between the extracted incoming call center line and the response MFT, and the communication path is changed to a communication state, thereby completing the response processing.

Following this, the open/wide button display control, which will be described in detail in the next section, is performed, and when this is completed, this "station line response control program" ends.

7. Indication control of the display lamp of the station line button Next, control of the display lamp (LED) of the station line button will be explained.

As mentioned above, in the system of this embodiment, the local transmitter is controlled to display all busy calls, and the wide button is controlled to display incoming calls. .

1 All busy display of the local transmitting section -: The design is to display all the central office line trunks belonging to the callable station line group assigned to the local transmitting section, even if there is even one free trunk among them. For example, a ``vacancy display'' is displayed for the local broadcasting section, and when all of them are occupied, a ``7 extra episode in progress'' display is displayed. In addition, the "1 incoming call display" control of the open/wide button indicates that there is only one trunk in the incoming call (waiting for response) state among the central office line trunks that belong to the answerable office line group assigned to the open/wide button. If there are trunks that are incoming calls, the wide button will display "incoming call", and if there are no trunks receiving calls, the wide button will display "no incoming call". It is done in the form of

The display control of the local oscillator section and the display control of the open wide button will be explained individually below.

(1) Local transmitter display υI'm (all-busy display control) To control the display of the local transmitter, the central controller 104 periodically displays
Start and execute the all-busy display control program≦. When the second program is executed, for each extension group, if there is an empty office line among the office lines belonging to one or more outgoing callable office line groups assigned to that extension group, (In other words, whether or not there is a central office line that can be captured for central office line transmission from the MFT 200 belonging to the extension group), and this determination result is determined as 'Occluded data area' (
The data shown in FIG. 4 (5)) is set as data for controlling the LED of the local oscillator.

To explain this point in more detail, when this program is started, the following processing is executed for each extension group in order from the first of the plurality of extension groups. The section first reads out one or more callable station line groups assigned to each Yamauchi line loop from the callable station line group identification data (fourth prong +41). Next, it is checked whether there is a free trunk belonging to that (or those) office line group by searching the office line trunk idle chain.Then, it is checked whether or not there is an empty trunk (a trunk that can make a call). According to the bits corresponding to the extension group in the ``office line group free and occupied data area,''
“Set No. 1 or 10≦.

In addition to the above-mentioned all-busy display control program, the central control device 104 periodically activates an all-busy display LED control automatic sending program. Then, when the second program is executed, the second program is first displayed MI II.
The setting data contents of the single-channel group free 7' blocked data area created by executing the I program are set to Qi's M
By transferring it to the common memory space for MFT control that can be referenced by the control device in TLIN122,
D control order" (6th]+11) is sent.

The control device of the MTLIN 122 periodically refers to this common memory space to receive this "local tLED control order" and, based on it, adjusts its MTL.
Display control is performed on the display LED of the local oscillator of the MFT 200 connected to the IN 122. At this time, since the "station button LED control order" is represented by bits corresponding to the extension group, the control device of the MTLIN 122 first inputs the "station &!! button registration data" (5th fork). (1
)) to determine which extension group the controlled MFT 200 connected to the MTLIN belongs to, and check the bit position of the "Local-originated kLED control order" corresponding to the extension group. Then, the value of this corresponding bit is “o.

If the value is 71j, the display lamp [LED] of the local oscillator section is set to "display vacancy", and when the value is 71j, "all busy display" is set.

(2) List of open/wide buttons - all (recipients) As mentioned above, the "office line call control program" executed when the central controller 104 recognizes an incoming call on the open/wide button includes the incoming call on the open/wide button. Processing for display control is also included in the "office line response control program" that is executed when the central controller 104 recognizes that the open wide button has been pressed. Contains processing for display control.

The incoming call display control processing in any of these programs is the same, and will be explained below.

First, for each station line group, check whether there is a station line that is waiting for a response among the station lines that belong to that station line group (i.e., whether there is a station line that is in the receiving state (=waiting for a response)). Based on this determination result, the above-mentioned "open wide button LED control order" (6th
Figure (2)) is created and sent.

To explain this point in more detail, once this incoming call display control process is executed, the head pointer 136 (31st m+21) for the station line response waiting queue is sequentially referenced from the first storage position, and each station line Regarding the group
It is checked whether a central line response waiting queue has been formed. Then, depending on whether or not there is a trunk waiting for a response, each bit of the "Open Wide Button LED III FM Order" corresponding to that station line group will be set to 71 if there is a trunk waiting for a response, or "O if there is a trunk waiting for a response."" is set as data. The central controller 104 uses the 7 wide 1
1 LED control order" is transferred in the form of being transferred to the aforementioned MFT control common memory space that can be referenced by the control device within the MTLIN 122.

The control device of the MTLIN 122 receives this "open wide button LED control order" by periodically referring to this common memory space, and based on it, its MTL
L of the wide open button of MFT200 connected to IN122
Performs necessary control over ED. This “open wide button LED”
Since the "control order" is expressed by bits corresponding to the station line group, the control device of the MTLIN 122 first reads the "station line button registration data" mentioned above when executing this control.
(FIG. 5 (1)), determine which extension group the controlled MFT 200 connected to the MTLIN belongs to, and then press the aforementioned "open wide button LE".
Di! Data corresponding to the determined extension group is extracted from the control data area number ((2) in FIG. 5).

The data extracted in this manner indicates which office line group is designated as a response-capable office line group for the extension group to which the MFT 200 belongs. Then, this extracted data and the "open wide tLED%iII order" read from the common memory space are logically ANDed fAw for each bit.

By doing this, it is possible to extract the incoming office line group that should be displayed in the MFT 200 as an incoming call.

Next, the control device of the MTLIN 122 refers to the "station line button registration data area" (FIG. 5 (1)), and from this data area, selects the MF connected to that MTLIN 122.
Information on the available station line groups assigned to the open wide buttons of T200 is extracted for each open wide button. In this way, if a match is found between the answerable office line group extracted for the opening and opening rainbow and the office line group that should be displayed as an incoming call obtained above, the display L of the opening and opening button is found to match.
If there is no match with any of the station line groups that should display an incoming call, the ED will display - No incoming call. Display collaterals are performed so as to cause "display".

8. Modified Embodiments The embodiment described in detail above is one specific example of the various possible embodiments of the invention.

The present invention can be made into various embodiments other than the above-mentioned example. For example, the terminals housed in the PBX are not limited to telephone terminals such as multi-function telephones, but may also be facsimile machines, etc. (However, even in such a case, the excellent advantages of the present invention can be enjoyed. For example, if a specific terminal is assigned the same function assignment as the call button set in any other extension group, that terminal can be assigned to multiple groups. In this case, it is possible to determine which extension group the incoming call belongs to before answering by pressing the open button for the incoming call, which allows for prompt and appropriate response. It is possible to improve the quality of customer service.

(Effects of the Invention) As is clear from the above explanation, the call control system of the private branch exchange system according to the present invention allows the automatic branch exchange to accommodate terminals having multiple function buttons that can be registered as extensions. At the same time, in a private branch exchange system accommodating a plurality of office lines, the plurality of office lines are grouped to set a plurality of office line groups, and each of the function buttons of the terminal is individually pressed. Assign the identification information of the station line group to the stations corresponding to the station line group &! By operating the station line button, calls can be made and received using the station line belonging to the corresponding station line group, so that many effects including those shown below can be obtained.

(1) The number of function buttons provided on one terminal does not limit the number of station lines that can be handled.

(2) Compared to the past, fewer central line buttons occupy the function buttons of a single terminal, so other functions can be assigned to the remaining function buttons; can be used effectively.

(3) Each terminal can be effectively used as a simple relay stand within the extension group to which the terminal belongs.

[Brief explanation of the drawing]

FIG. 1 shows the configuration of an example of a private branch exchange system to which a separate calling/receiving system according to an embodiment of the present invention is applied! It is. FIG. 2 is a front view of a function button panel of a multi-function telephone (MFT) used in the system of the first embodiment. The third tK fli and (2) are X for explaining the method of managing the status of central office line trunks using the trunk memory set in the private branch exchange (PBX) of the 1st system. , respectively, show the idle chain of the trunk memory and the central office line response waiting queue.
FIG. 2 is a data area configuration diagram showing a data area that is exclusively referred to by the central control unit of the PBX among various data areas set in the BX for central line call control. 51st fli and 12): Yo, 1st sis y L
Of the various data areas set in the PBX for control of incoming and outgoing calls from the central office line, is it exclusively for the multi-function telephone side of the PBX? !
FIG. 2 is a data area configuration diagram showing a data area that is controlled by the control amount of the IJ crossing CMTL]N]. 61st! m and (2): PBX of the first fork system
Of the various data areas set in the PBX central controller for central office line call control
It is a configuration diagram of data of a local button LED control order and an open wide button LED control order read by the @device of LIN. No. 7X is a configuration diagram of an example of a private branch exchange system to which a conventional central office line originating/receiving control method based on button telephone operation is applied. 8th I: Well, 7th! FIG. 2 is a panel diagram of a function button spring of a multi-function telephone 11 CM F T which is used in the system of FIG. 100...Private branch exchange CPBX), 104...Central control unit (CC), 106...Storage device CMM), 122-...Multi-function telephone IIJ ill Danro (MTL)
IN), 200...Extension terminal C multi-function telephone MF
T C1, 8 l ~, 8 n, 8 1
~ B n, ,, - central office line, TA1~TA
n, TB1~TB,...Station line trunk, F1~Fn-4Ji function button, F1~F3...Station line button, Fl...Station line call button (station dispatch hammer), F2, F3...Station line Response 1C station response button].

Claims (6)

[Claims] (1) In a private branch exchange system in which a private branch exchange system accommodates a terminal having a plurality of function buttons that can be registered as an extension line and also accommodates a plurality of office lines, the plurality of office lines are divided into groups. A plurality of office line groups are set, and identification information of each office line group is assigned to each of the function buttons of the terminal to make the office line button corresponding to the office line group, and by operation of the office line button, A calling/receiving control method for a private branch exchange system characterized in that calls are made/received using office lines belonging to a corresponding office line group. (2) A plurality of terminals are accommodated as extensions in the private automatic branch exchange, the plurality of terminals are grouped to set up a plurality of extension groups, and the central office line button on the terminals belonging to the same extension group is set. 2. The call originating/receiving control method for a private branch exchange system according to claim 1, wherein the setting of the central office line button corresponding to the central office line group is set for each extension group by making the settings the same. (3) When assigning identification information of a station line group to each of the function buttons of the terminal to make the station line buttons compatible with the station line group, the station is made to correspond to a station line group that can be used when making a call. Call origination/reception control for a private branch exchange system according to claim (1) or (2), characterized in that a line origination button and a station line response button corresponding to a response capable station line group that can respond when a call is received are set. method. (4) The private branch exchange according to claim (3), characterized in that one central office line call button is set for one terminal, and a plurality of central office line response buttons are set for one terminal. System call control method. (5) Assign a plurality of callable station line groups to the one station line call button of one terminal, and assign each of the plurality of responseable station line groups to the plurality of responses of one terminal. 5. The call originating/receiving control method for a private branch exchange system according to claim 4, wherein the call control method is assigned to each of the available station lines. (6) A call origination/reception control method for a private branch exchange system according to any one of claims (1) to (5), wherein the terminal device is a multifunction telephone.