JPH045302B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a subscriber status display system and, more particularly, to a stored program controlled system containing subscriber and attendant consoles and having a central controller and main memory. The present invention relates to a subscriber status display method for dividing all subscribers into a plurality of subscriber groups in an exchange and displaying the latest availability status of each subscriber in a specified subscriber group on an attendant console.

Technical Background In a relatively small-scale private branch exchange, if the subscriber's idle status is displayed on the attendant console, for example, if the number of extension subscribers is less than 1000, 100 display lamps are displayed on the attendant console. A display lamp field consisting of a 100 series designation key HGNKi that specifies the 100 series subscriber number.
If the exchange handler knows the blockage status of a particular subscriber, he/she can use the 100 number specification key HGNKi (for example, i=5 for 500 number) to specify the 100 number of the subscriber number. push. As a result, it has been designated as 100 indicator lamps in the indicator lamp field above.
100s (in this case, 500s, i.e. numbers 500~
599) subscribers' air occupancy status is displayed,
The operator can know the availability status of the desired subscriber from this display.

In this way, by making it possible to display the latest occupancy status of a large number of subscribers using a small display lamp field, it is possible to display it on a small display screen on the attendant console.

Prior Art and Problems In order to display the subscriber's availability status on the attendant console using the above display method,
According to the prior art, the attendant console is provided with a memory for storing the availability status of all subscribers;
This memory receives information indicating the idle status of all subscribers at regular intervals from the status storage area of all subscribers in the main memory of the exchange, and is constantly updated to the latest information. Attendant will receive information on the idle status of all subscribers whose numbers are in the 100s specified by the 100s designation key HGNKi.
It was selectively read out from the console's memory and displayed on the indicator lamp in the indicator lamp field. All subscriber status storage areas in the main memory of the above-mentioned exchange are immediately rewritten by the exchange's central control unit when there is a change in subscriber status, and are always updated to the latest status.・As mentioned above, the console memory also receives the information in the subscriber status storage area of the main storage device at regular intervals and is always updated to the latest status, so the display lamp field always shows the subscriber's latest information. status is displayed.

According to the prior art described above, all attendant consoles must be equipped with a memory to store all subscriber status. According to the above conventional technology,
Since this memory requires a large memory capacity to accommodate all subscribers, the amount of hardware occupied inside the attendant console increases, and as the number of subscribers increases at the exchange, the above memory of the attendant console must be expanded. Moreover, the amount of information that must be transferred from the main memory to the attendant console is large, and this includes a lot of unnecessary information that is not related to display control, which has the disadvantage of reducing the efficiency of using the information transmission path. It was hot.

OBJECTS OF THE INVENTION The present invention obviates the above-mentioned drawbacks of the prior art, reduces the amount of memory required in the attendant console of a switch, reduces the amount of hardware required, and provides a main storage system in the switch for subscriber status display. The purpose is to reduce the amount of information that must be transferred from the attendant console to the attendant console, thereby improving the efficiency of using the information transmission channel.

Embodiments of the Invention Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an example of a private branch exchange in which the present invention can be implemented, and FIG. 2 is a diagram showing an example of the configuration of the main storage device of the exchange in the case of implementing the present invention. .

In Fig. 1, NW is a communication line equipment, COT is a central office line trunk, L is a central office line, S ₁ to _{S 3} are extension subscribers,
LC ₁ to _{LC 3} are the line circuits of extension subscribers S ₁ to _{S 3} , respectively, ATT ₁ and ATT ₂ are the attendant consoles, LC ₄ and LC ₅ are the line circuits of the attendant consoles ATT _{1 and ATT 2, respectively, and ACC is the line circuit of the attendant consoles ATT 1} and ATT ₂ , respectively. Attendant console controller, CC is central control unit, SCN is scanning unit, MM is main memory,
B is a common bus.

The subscribers accommodated in this exchange are divided into a plurality of groups. For example, if there are less than 1000 subscribers, one group may consist of 100 subscribers.
Subscribers having the same number in the 100s, such as 000-099, 100-199, . . . , can be grouped as one group. In this way, the key for specifying the subscriber group can be a key specifying the subscriber's number in the 100s.

In this way, each attendant console
ATT ₁ and ATT ₂ are each designated keys in the 100s.
An indicator lamp field composed of HGNKi and 100 indicator lamps (not shown) may be provided.

The private branch exchange shown in FIG. 1 operates similarly to a conventional storage program controlled exchange.

There are many subscribers other than those shown in _S1 to _S3 , but they are omitted from the figure.

The on/off status of subscribers (including S ₁ -S ₃ ) and trunks is monitored by a scanning device SCN.
The subscriber on/off information is sent from the scanning device SCN to the central controller CC, which
Based on this information, the subscriber's calling party, dialed digits, etc. are identified and the channel device NW is controlled to connect the calling subscriber to the called party.

When there is an incoming call from the central office line L, the scanning device SCN sends status information of the central office line trunk COT to the central controller CC, which analyzes this information, identifies the incoming call, and sends it to the attendant console.
Control is performed so that the incoming call from station line L is displayed on ATT ₁ and ATT ₂ . Attendant console ATT ₁ or
The switching operator at ATT ₂ answers the incoming call on central line L.

FIG. 2 shows the configuration of main memory device MM shown in FIG. 1. In addition to the well-known state storage area CM of all subscribers provided in the main memory MM, the present invention also includes an area BLFBM ₁ of buffer memory for indicator lamps.
~BLFBMn and a waiting buffer area QB are provided.

Here, in the status storage area CM of all subscribers, the latest free or full information of all subscribers detected by the scanning device SCN is stored.

Buffer memory area for display lamp BLFBM ₁ ~
BLFBMn is provided for each attendant console, and when it has two attendant consoles ATT ₁ and ATT ₂ as shown in the figure,
There are two buffer memory areas for display lamps, i.e.
It is sufficient to provide BLFBM ₁ and BLFBM ₂ . In this case, buffer memory area BLFBM ₁ for each indicator lamp,
BLFBM ₂ only needs to have the capacity to store status information for one subscriber group, 100 subscribers in this example.

When the status of a subscriber changes and this change information is written to the empty state storage area CM of all subscribers, it is checked whether this change information is related to the 100s specified by the 100s specified key HGNKi. If it is related, it is written in this waiting buffer area QB. The contents of this buffer QB for waiting are read out periodically, and the buffer memory for the required indicator lamp BLFBM ₁ ~
Moved to BLFBMn.

Next, the operation when the present invention is implemented in the private branch exchange shown in FIG. 1 will be explained.

For example, suppose that the person handling the exchange of attendant console ATT ₁ needs to know the empty/occupied status of subscriber No. 501.

Attendant Console ATT ₁ exchange handler has 100 number designation key to specify 500 number subscribers
Press HGNKi (i=5). This key information is received from the attendant console ATT ₁ via the attendant console controller ACC and the common bus B to the central control unit CC.

The central controller CC receives this key information, i.e.
Based on the fact that the request source is the attendant console ATT ₁ and the request is to display the occupancy information of subscribers in the 500 series, the occupancy status of all subscribers in the main memory MM (see Figure 2) is displayed. Read the latest air block information of 100 subscribers in the 500 range stored in the storage area CM and send it to the attendant console ATT _1.
Buffer memory area for indicator lamps corresponding to
Write to BLFBM ₁ .

Next, the transfer program is started periodically, and the central control unit CC transfers the contents of the display lamp buffer memory BLFBM ₁ of the main memory unit MM to the common bus B and the attendant console controller.
It is transferred to the display lamp memory BLFM ₁ provided in the attendant console ATT ₁ via the ACC and stored there. The attendant console indicator lamp memory BLFM is updated periodically. As explained earlier, _{this indicator lamp memory BLFM 1 has} the same storage capacity (100
100 in the 100 series specified by the 100 series designation key HGNKi.
State information of each subscriber is stored. The contents are read from this display lamp memory BLFM ₁ ,
Accordingly, the 100 lamps in the display lamp field display, for example, the blockage information of 100 subscribers in the 500 series.

Attendants always keep up-to-date with subscriber's latest air block information.
The following is done to display on consoles ATT ₁ and ATT ₂ .

To carry out the switching process, as is generally known, a scanning device SCN periodically scans the line circuit of each subscriber and monitors its on and off status,
This on/off information is sent to the central controller CC along with the subscriber's number information, and the central controller CC determines the subscriber's blockage status based on this information.
When the state changes, the main memory MM
The change is written to the address of the corresponding subscriber in the vacant storage area CM of all subscribers, and the storage area is
CM always stores the latest air block information for subscribers.

According to the present invention, if the 100 series designation key HGNKi is pressed on at least one of the attendant consoles, for example ATT ₁ , and a subscriber status display request is made, this request is processed by transmitting the request source information (ATT ₁ as described above). ) and the specified 100 series (for example, 500 series) information is transferred to the central controller CC and held there.

In the above central control unit CC, the scanning device SCN
If it is determined that there has been a change in the subscriber's status based on information from the attendant console, the empty status storage area CM of all subscribers is rewritten based on this change information. When a request is made to display the subscriber's busy status, the above change information is checked for subscriber number information attached to the change information, and the change information is checked for the subscriber number information attached to the change information, and the change information is changed to the 100 number specified by the 100 number specification key HGNKi. Determine whether or not. For example, if a subscriber in the 500 range is specified in the above, the subscriber's number must be between 500 and 500.
599 or not.

The above subscriber number information is the above 100 number designation key
When it is determined that the subscriber number is in the 100s specified by HGNKi, this subscriber number information and the corresponding change information are stored in the main memory MM by the central controller CC along with the attendant console information that specified the 100s. The data is stored in the waiting buffer area QB set within. However, the above subscriber number information was specified with the above 100 series specification key HGNKi.
If it is determined that the number is not in the 100s, this information is discarded without being stored in the waiting buffer QB.

The contents of the waiting buffer QB are periodically read, and based on the attendant console information included in the contents, the corresponding indicator lamp buffer memory BLFBM ₁ (corresponding to the attendant console ATT ₁ ) is selected. ,
The address of the corresponding subscriber in the buffer memory BLFBM ₁ is rewritten according to the change information.

In this way, the indicator lamp buffer memory BLFBM ₁ in the main memory MM is always updated with the latest information of the subscriber, while the contents of this indicator lamp buffer memory BLFBM ₁ are periodically updated to the attendant console. Since the information is transferred to the display lamp memory BLFM ₁ of ATT ₁ , the latest air block information for the specified 100-series subscriber is displayed in the display lamp field of the attendant console ATT ₁ .

Although the case where a display request is made from one attendant console has been described above, it is possible to process the case where display requests are made simultaneously from two or more attendant consoles in the same way. In this case, the central controller
Regarding the subscriber number information that accompanies the change information that the CC sends to the empty status storage area CM of all subscribers regarding the subscriber whose status has changed, the number in the 100s (specified group number), it is necessary to separately determine whether it belongs to each attendant console.

Although the present invention has been described above with reference to one embodiment, the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope thereof.

Effects of the Invention Since the present invention is configured as described above, a certain number of subscriber groups specified on the attendant console, for example, 100 subscriber groups of the same number 100,
In other words, when displaying the blockage status of subscriber groups numbered 000-099, 100-199, 500-599, etc. using the same number of indicator lamps as the number of subscribers in the group, the attendant console specifies It is only necessary to notify information about only the subscribers belonging to a group (for example, one hundred subscribers in a private branch exchange accommodating several hundred subscribers) from the main memory to the attendant console.
Since there is no need to notify all subscribers of change information,
Information transmission paths (attendant console controller, common bus, etc.) are used more efficiently, and each attendant console does not need to own the memory of all subscribers accommodated in the exchange. Since it is sufficient to provide memory for the number of subscribers in a group (for example, 100), this has the effect of reducing the amount of hardware required for the attendant console and lowering costs. Furthermore, even when the number of subscribers is increased in the exchange, there is an advantage that there is no need to increase the memory for the display lamp of the attendant console.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an example of a private branch exchange in which the present invention can be implemented, and FIG. 2 is a diagram showing a main storage device configured according to the present invention. NW...Communication line equipment, COT...Central line trunk,
L...Station line, _S1 to _S3 ...Extension subscriber, _LC1 to _LC5
... Line circuit, ATT ₁ , ATT ₂ ... Attendant console, ACC ... Attendant console controller, CC ... Central control unit,
SCN...Scanning device, MM...Main memory, B...
...Common bus, CM...Empty storage area for all subscribers, _BLFBM1 to BLFBMn...Buffer memory area for display lamps, QB...Buffer area for waiting.

Claims (1)

[Claims] 1. In a storage program controlled switching system that accommodates subscriber and attendant consoles and is equipped with a central control unit and main memory, all subscribers are grouped into a plurality of subscriber groups, and the attendant console a group designation key for designating one of the subscriber groups; a display lamp for displaying the unoccupied state of each subscriber in the group designated by the operation of the group designation key; and a display for storing information for controlling the display lamp. A lamp memory is provided, and a buffer memory area and a waiting memory area for display lamps corresponding to the attendant console are set in the main memory of the exchanger in addition to the empty state storage area for all subscribers. When a request is made to display the subscriber's busy state by specifying a subscriber group, the central control unit that received this request displays the specified subscriber group from the busy state storage area of all the subscribers. The information on the vacant status of each subscriber belonging to the subscriber is read and written into the buffer memory for the indicator lamp corresponding to the attendant console, and this information is periodically transferred to the memory for the indicator lamp on the attendant console. When a change in state is detected, this state change information is written to the empty state storage area of all the subscribers, and whether or not the subscriber who caused the state change belongs to the specified subscriber group is determined. If it is determined that it belongs, the change information is temporarily written into the waiting buffer, and this is read to update the contents of the display lamp buffer memory, so that the information is displayed on the attendant console according to the latest information. A subscriber status display method characterized by displaying the unavailability status of each subscriber in a specified subscriber group.