JP5924216B2 - Accommodating voice channel densification private branch exchange and densification method - Google Patents

Description

  The present invention relates to a private branch exchange, and more particularly to a private branch exchange having a high density of accommodated voice channels.

  According to a conventional example, a private branch exchange includes a control unit and several line units housed in a casing to form one cabinet, and one control unit is provided in the entire system. When increasing the number of lines, expansion is performed in units of cabinets with only line units. Each line unit is composed of one control package and a plurality of line packages that are detachably mounted in a receiving slot connected to the control package by an audio bus.

  In the case of this conventional example, a maximum of 20 line packages are mounted in one line unit, and the total of 384 audio channels is provided. Each line package is connected to the control package by three audio buses corresponding to 8 MHz clock.

  In such a configuration, the control package sends a time slot number assignment signal synchronized with the 8 MHz clock based on the time slot table to the line package via the hardware interface and the audio bus, and synchronizes with the 8 MHz clock. Time slots are assigned to voice channels. Therefore, each line package receives only the voice channel of the time slot assigned to it.

  In Patent Document 1, a communication control apparatus that controls different types of line adapters to accommodate a plurality of types of lines such as a low-speed line and a high-speed line. A line scanning method is disclosed in which time slots are set in order from the number. According to this, even if a high-speed line and a low-speed line are mixed, only the high-speed line can be preferentially scanned, and useless line scanning can be prevented.

Japanese Patent Publication No. 6-57025

  In recent years, there has been an increase in demand for additional lines such as having one kitchen terminal per person. In order to increase the number of lines, it is only necessary to increase the number of channels by increasing the number of line packages. Therefore, if the number of audio channels is doubled, for example, the conventional 384 channels can be increased to 768 channels. To do so, double the number of audio channels per time slot synchronized to the 8 MHz clock, or double the frequency of the audio bus clock to 16 MHz and double the number of time slots. There is a need. Either way, a 768 channel audio channel can be secured, but in order to do so, all circuit packages must be reconfigured to accommodate this new condition. Moreover, if it tries to make it compatible with them, maintaining the existing equipment, the kind of package will also increase. Therefore, a large amount of cost and development man-hours are required, and it is not a measure that can be easily realized. In addition, in order to make an existing exchange adaptable to such new conditions, there has been a problem that the facility renewal work becomes large-scale and may interfere with customer use.

  In view of such a problem, the present invention can use a line package of an existing private branch exchange and a line package having a high density in parallel without reducing the accommodation efficiency, and can be used in accordance with the number of channels requested for expansion. An object of the present invention is to provide a private branch exchange and a high density method capable of adding channels in units.

  According to the present invention, a private branch exchange including a control unit and a line unit, in which a plurality of accommodation slots are arranged, has a plurality of voice channels corresponding to time slots synchronized with a predetermined frequency clock. One or a plurality of basic line packages that are installed in a receiving slot installed in the line unit, and one having a predetermined number of audio channels corresponding to a time slot synchronized with a frequency clock that is a predetermined frequency of the frequency Alternatively, a plurality of high-density line packages are mounted in the accommodation slot, a control package for controlling the allocation of the voice channel is mounted on the line unit, and the accommodation slot and the control package correspond to the frequency clock of the basic line package. Connected by voice bus, accommodating slot and control package have high density Time slots that are connected by the second audio bus corresponding to the frequency clock of the line package, and are assigned in order from one direction according to the first data format corresponding to the basic line package when the basic line package is installed in the accommodation slot. Data is sent from the control package to the basic line package via the first audio bus, and the voice channel of the basic line package is allocated in order from one direction by the station data supplied from the control unit. When installed in the receiving slot, the time slot data allocated in order from the other direction opposite to the one direction according to the corresponding second data format is transferred from the control package via the second audio bus. The voice channel of the high-density circuit package Allocated in order from the other direction by the data, thereby characterized in that to secure a predetermined multiple audio channels up to the line units.

  According to the present invention, the method for increasing the number of voice channels in a private branch exchange including a control unit and a line unit, wherein the line unit is provided with a plurality of receiving slots is synchronized with a predetermined frequency clock. One or more basic line packages having a plurality of audio channels corresponding to the time slots are mounted in the accommodation slots, and the audio channels of the predetermined times of the audio channels corresponding to the time slots synchronized with the frequency clock of a predetermined frequency of the frequency One or more high-density line packages having the same number are installed in the accommodation slot, a control package for controlling the allocation of voice channels is installed in the line unit, and the accommodation slot and the control package are used as the frequency clock of the basic line package. Connect with the corresponding first audio bus and the storage slot and control package When the basic line package is installed in the receiving slot when the second audio bus corresponding to the frequency clock of the second line package is connected, the time allocated in order from one direction according to the first data format corresponding thereto The slot data is sent from the control package to the basic line package via the first audio bus, and the voice channel of the basic line package is allocated in order from one direction by the station data supplied from the control unit, and the high-density line package Is inserted into the accommodation slot, the time slot data assigned in order from the other direction opposite to the one direction in accordance with the second data format corresponding thereto is transferred from the control package via the second audio bus. Voice channel of high-density circuit package sent to high-density circuit package The station data are allocated in order from the other direction, thereby characterized in that to secure a predetermined multiple audio channels up to the line units.

  According to the present invention, the control unit preferably includes a host control package for managing station data, to which a maintenance controller for inputting setting conditions is connected.

  According to the present invention, a part or all of the existing line package constituting the line unit in the private branch exchange is replaced with a double-dense line package, or the double-dense line package is mounted in addition to the existing line package, The conventional line package assigns time slots from time slots, for example, from younger numbers, and the double-dense line package assigns time slots from time slots, in this example from old numbers. As a result, it is possible to obtain an effect that the accommodated voice channels per line unit can be doubled up to twice as many channels in this example while using the existing line package.

  In addition, when existing line packages and double-dense line packages are reduced, the remaining time slots assigned to the existing line package are assigned to the time slots, in this example younger, and to the double-dense line package. The remaining time slots are sequentially packed in the old slot direction. As a result, the time slot assigned to the newly added package can be used without causing the time slot to be freed, so that the effect that the accommodation efficiency is not lowered can be obtained.

  Furthermore, the present invention can double the accommodated voice channel while using the existing line package, so that the development man-hours can be reduced and the replacement work can be simplified.

  Here, the existing line package refers to a line package mounted on a private branch exchange that has been put into operation or has already been manufactured, and may be referred to as a basic line package. The double-dense line package refers to a line package having channels several times the number of channels mounted on the basic line package.

It is a block diagram of a line unit for explaining operation of a line unit in an embodiment of a private branch exchange according to the present invention. It is a schematic perspective view which shows the external appearance of the housing | casing of the private branch exchange shown in FIG. FIG. 3 is a block diagram showing an internal device configuration of the line unit shown in FIG. 2. It is a block diagram which shows the circuit structure of the line | wire unit and control unit in the Example. It is a figure of the data format for demonstrating the correspondence of the time slot number and audio | voice channel in the Example. It is a time slot allocation diagram for demonstrating operation | movement of the exchange in the Example. It is a figure of the data format for demonstrating the correspondence of the time slot number and audio | voice channel in the Example. It is a time slot allocation schematic diagram for demonstrating operation | movement of the exchange in the Example. It is a time slot allocation diagram of a station data section for explaining the operation of the line package in the same embodiment. It is a block diagram similar to FIG. 1 for demonstrating the reduction operation of the line unit in the line unit of the Example. It is a schematic diagram which shows the state of the time slot allocation register for demonstrating operation | movement of the exchange in the Example. FIG. 11B is a schematic diagram showing a state updated from the state of the time slot allocation register shown in FIG. 11A. It is a time slot allocation diagram for demonstrating the reduction | decrease operation | movement of the circuit package in the exchange of the Example. It is a time slot allocation diagram for demonstrating the reduction | decrease operation | movement of the circuit package in the exchange of the Example.

  Embodiments of a private branch exchange according to the present invention will now be described in detail with reference to the accompanying drawings. First, the structure of a present Example is demonstrated with reference to FIGS. 1-3.

  Referring to FIG. 2, the private branch exchange 10 according to the embodiment is a typical private branch exchange for the general private demand, and includes one control unit 14 and a plurality of (in this embodiment, five) line units in the casing 12. 16 is mounted to form one cabinet.

  The housing 12 is a pedestal for housing the constituent units of the private branch exchange 10 such as the control unit 14 and the line unit 16. One control unit 14 is provided in the entire system. Therefore, the basic configuration is to accommodate one control unit 14 and five line units 16 in one housing 12. When a line is added from the basic configuration, a cabinet that accommodates up to six line units 16 in the present embodiment is added to the casing 12.

  In this embodiment, the control unit 14 is a control device that is mounted on the chassis 12 having the basic configuration and controls the line unit 16 of the entire system. This is equipped with a host control package 20 (FIG. 4) which will be described later.

  In this embodiment, as shown in FIG. 3, the line unit 16 is composed of a control package 18 that is normally arranged for each line unit 16 and a maximum of 20 line packages 22. Yes.

  As shown in FIG. 1, the control package 18 incorporates a hardware interface (HW I / F) 24, and is connected to each line package 22 through this. More specifically, three bus width 8 MHz clock audio buses 26 extending from the hardware interface 24 and one bus width 48 MHz clock audio bus 28 are connected to the accommodating slot 23 (FIG. 3) in the same line unit 16. Then, the line package 22 is attached to each accommodation slot 23.

  In this embodiment, the line package 22 includes a line package 22a compatible with an 8 MHz clock and a line package 22b compatible with a 48 MHz clock. In the present application, for convenience of explanation, the line package 22a corresponding to the 8 MHz clock may be referred to as a basic line package, and the line package 22b corresponding to the 48 MHz clock may be referred to as a double-dense line package. Both are detachably mounted in any of the accommodation slots 23, and can be mixedly mounted as a whole line unit 16. Of course, only one of the line packages 22 may be mounted in the line unit 16.

  One basic line package 22a has 16 audio channels in this embodiment, and is connected to three 8 MHz clock audio buses 26 by being installed in the accommodation slot 23 of the line unit 16.

  In the present embodiment, the double-dense line package 22b has one 32 audio channel, and is connected to one 48 MHz clock audio bus 28 by being installed in the accommodation slot 23 of the line unit 16.

  The control package 18 is a control function unit that performs time slot management of the line package 22 and allocation of audio signals to the line package 22 based on signals from the host control package 20 described in detail later. As shown in FIG. An upper order / event interface (OE I / F) 34 and a control circuit 36 are included. The upper order / event interface 34 is a functional unit that exchanges an order / event (OE) signal with the upper control package 20. The control circuit 36 is a functional unit that controls the OE signal, and includes, for example, a processing system including a central processing unit (CPU).

  The control package 18 also includes a time slot allocation register 38 that manages time slots (TS), an order / event register 40 that temporarily stores OE signals managed in such time slots, and an order / event bus 52. The basic line package 22a or the double-dense line package 22b and the lower order / event interface 42 for exchanging OE signals.

  The control package 18 further includes a hardware interface 44 that exchanges audio signals with the host control package 20, and a time division switch circuit (TSW) 46. The time division switch circuit 46 is a circuit that distributes audio channels from the upper control package 20 to the basic package 22a and the double-dense package 22b, and couples audio channels from the basic package 22a and the double-dense package 22b to each other. is there.

  The control package 18 also has two hardware interfaces 48 and 50. The hardware interface 48 is an 8 MHz hardware interface that exchanges an 8 MHz audio signal with the basic line package 22a. The hardware interface 50 is a 48 MHz hardware interface that exchanges 48 MHz audio signals with the double-dense line package 22b.

  The host control package 20 is a control function unit that is mounted on the control unit 14 and manages data for assigning voice channels of the line package 22, and further exchanges signals with the outside of the system. A maintenance controller 62 is connected to the host control package 20 as shown in FIG. The maintenance controller 62 is an operating device for the maintenance person to input setting conditions such as the type of the line package 22 and the number of channels.

  The host control package 20 includes a station data management unit 54 and a host control package order / event interface 56, as shown. The station data management unit 54 is a functional unit that manages to which voice channel each line package 22 is assigned. The upper control package order / event interface 56 is a functional unit that exchanges data with the station data management unit 54 and the control package 18.

  The host control package 20 further includes a time division switch circuit (TSW) 58 for switching the voice channels of the entire system, and a hardware interface for transferring voice signals between the time division switch circuit (TSW) 58 and the control package 18. Includes 60 and more.

  Next, the operation of the private branch exchange 10 in the present embodiment will be described with reference to FIGS. Here, the time slot allocation operation when the double-dense line package 22b is added will be mainly described. In order to simplify the explanation, as an example, as shown in FIG. 4, two double-dense line packages 22b- are installed in the line unit 16 in which two basic line packages 22a-1 and 22a-2 are mounted. The case where 1 and 22b-2 are added is explained.

  When the basic line packages 22a-1 and 22a-2 are installed in the initial state, it is registered in advance in the system that these line packages are basic line packages. Therefore, necessary time slots are allocated in one direction, in ascending order from the lowest number in this embodiment, among the time slots synchronized with the 8 MHz clock in accordance with the data format shown in FIG. Here, since two basic line packages 22a-1 and 22a-2 are mounted, as shown in FIG. 6, the time slot number 0, which is the youngest number, is assigned to 32 channels, that is, time slot number 10. ing.

  Here, a new line is added by inserting the double-dense line packages 22b-1 and 22b-2 into the accommodation slot 23. Therefore, the maintenance person operates the maintenance controller 62 to input setting conditions such as the line package type and the number of channels as necessary information 110, and these are registered in the station data management unit 54 of the host control package 20.

  When the necessary information 110 is registered, the station data management unit 54 in the upper control package 20 recognizes from the necessary information 110 that the type of the new line package is double, and the high clock data shown in FIG. According to the format, the empty time slots of the time slots synchronized with the 48 MHz clock are allocated in the other direction, in this example, in descending order from the oldest number. In this case, since two double-dense line packages 22b-1 and 22b-2 are added, as shown in FIG. 8, allocation is performed from the old time slot number 767 to 64 channels, that is, the time slot number 704. . At this time, the basic line packages 22a-1 and 22a-2 also follow the high-clock data format shown in FIG. 7 and have 32 channels from the time slot number 0, which is a young number, as shown in FIG. Reassignment is performed up to time slot number 31.

  The assigned data 112 assigned by the order from the higher-order control package 20 is transferred to the time slot allocation register 38 via the higher-order control package order / event interface 56, the higher-order order / event interface 34 of the control package 18, and the control circuit 36. Written.

  Here, according to the order issued from the control package 18, the allocation data 112 is transmitted to the added double-dense line package 22b via the lower order / event interface 42, and based on the allocation data 112 set in descending order from the oldest number. The audio channel is set. As a result, as shown in FIG. 9, the basic line packages 22a-1 and 22a-2 have 32 channels in time slot numbers 0 to 31, and the double-dense line packages 22b-1 and 22b-2 have time slots. 64 channels are set to numbers 704 to 767.

  In this embodiment, the time slot allocation to the basic line package 22a is performed only in ascending order from the youngest number, so the time slot allocation to the double-dense line package 22b is set in descending order from the oldest number. Thereby, it is possible to avoid reducing the number of channels that can be used by the basic line package 22a as much as possible.

  Next, the operation when the line package is removed will be described with reference to FIGS. As shown in FIG. 10, for example, when two basic line packages 22a-1 and 22a-2 and two double-dense line packages 22b-1 and 22b-2 are mounted, the time slot is changed. It is assumed that one basic line package 22a-1 assigned a number and one double-dense line package 22b-1 assigned an old number are reduced.

  First, by operating the maintenance controller 62, the type of the line package to be removed from the station data management unit 54 of the host control package 20, that is, the type of the line packages 22a-1 and 22b-1 in this example, the number of channels, etc. Enter the required information 110. The necessary information 110 is registered in the control unit 14. Next, the line packages 22a-1 and 22b-1 are removed from the accommodation slot 23 of the line unit 16.

  Therefore, information on the time slot allocated to the reduced line package is sent to the time slot allocation register 38 of the control package 18 according to the order output from the host control package 20. Accordingly, the contents are updated from the state shown in FIG. 11A to the state shown in FIG. 11B, and the time slot number assigned to the reduced line package is the remaining line package, in this case, the basic line package 22a-2 and Allocated to the double-dense line package 22b-2.

  When the system is restarted after the reduction procedure, the time slot allocation information is initialized. As shown in FIG. 12, the time slot allocated to the basic line package 22a-2 mounted without being reduced, that is, The voice channels are sequentially packed in the direction of the younger time slot that has become empty. Further, as shown in FIG. 13, the time slots assigned to the double-dense line package 22b-2 mounted without being reduced, that is, the voice channels are sequentially packed in the direction of the old number slot that has become empty. .

  With this initialization, the time slots of the installed basic circuit package 22a-2 and double-dense line package 22b-2 are assigned from the young number and the old number without any blank number.

  In this way, even when a line package is newly added, it is not necessary to add new individual time slot allocation control such as searching for an empty slot, and a basic allocation operation may be performed. That is, in the case of the basic line package, the time slot assigned to the basic line package 22a-2 is followed by the ascending order from the lowest number, and in the case of the double line package, the time assigned to the double line package 22b-2. The slots are assigned in descending order from the oldest number.

  The above embodiment is an example in the case of two basic line packages and two double-dense line packages. Of course, the same operation is performed even if the number of sheets is other than two. It can correspond to the number of channels to be performed. In addition, when all line packages are switched to double-dense line packages, the case 12 of the conventional exchange is left as it is, without adding the case 12, as compared to the case where all are the basic line packages. In use, a private branch exchange having twice as many voice channels can be obtained.

10 Private branch exchange
12 Enclosure
14 Control unit
16 line unit
18 Control package
20 Host control package
22 Line package
26 8MHz clock audio bus
28 48MHz clock audio bus
22a Basic line package
22b High-density circuit package
36 Control circuit
38 Time slot allocation register
40 Order / Event Register
54 Station Data Management Department

Claims (12)

A private branch exchange including a control unit and a line unit, wherein the line unit is provided with a plurality of receiving slots.
One or a plurality of basic circuit packages having a plurality of audio channels corresponding to time slots synchronized with a predetermined frequency clock are mounted in the accommodation slot,
One or a plurality of high-density circuit packages having a number of audio channels that is a predetermined number of times of the audio channels corresponding to a time slot synchronized with a frequency clock that is a predetermined frequency of the frequency are mounted in the accommodation slot,
A control package for controlling the allocation of the voice channel is mounted on the line unit,
The accommodation slot and the control package are connected by a first audio bus corresponding to a frequency clock of the basic line package;
The accommodation slot and the control package are connected by a second audio bus corresponding to the frequency clock of the high-density circuit package;
When the basic line package is installed in the accommodation slot, the time slot data allocated in order from one direction according to the first data format corresponding thereto is transmitted from the control package via the first audio bus. The voice channel of the basic line package is allocated in order from the one direction by the station data sent to the basic line package and supplied from the control unit,
When the high-density line package is installed in the accommodation slot, time slot data assigned in order from the other direction opposite to the one direction according to the second data format corresponding to the high-density line package is received from the control package. Sent to the high-density line package via the second voice bus, and the voice channels of the high-density line package are sequentially allocated from the other direction by the station data,
Thus, the private branch exchange is characterized in that a voice channel having a predetermined number of times is secured in the line unit at the maximum. The exchange according to claim 1,
The control unit includes a host control package for managing the station data;
A maintenance controller for inputting setting conditions is connected to the host control package,
A private branch exchange, wherein when a basic line package or a high-density line package is newly added or removed, a maintenance operator inputs the type of the line package and the number of channels from the maintenance controller as the setting conditions. . 2. The exchange according to claim 1, wherein the basic line package is assigned a time slot on the one direction side, and / or the high-density line path is assigned a time slot on the other direction side. when Tsu cage is reduced set, the restart of the switch, the time slots assigned to the base line package remains in the empty slot of the one direction and the time slots assigned to the high density line package remaining Are sequentially filled in empty slots in the other direction according to the data format.   2. The private branch exchange as claimed in claim 1, wherein the basic line package and the high-density line package mounted on the line unit do not exceed a predetermined number of mounted packages.   2. The private branch exchange according to claim 1, wherein the number of channels of the high-density circuit package is twice the number of channels of the basic circuit package.   2. The private branch exchange according to claim 1, wherein the predetermined clock frequency corresponding to the basic line package is 8 MHz, and the predetermined multiple clock frequency is 48 MHz.   2. The exchange according to claim 1, wherein the first audio bus is an 8-MHz clock audio bus with three bus widths, and the second audio bus is a 48-MHz clock audio bus with one bus width. A private branch exchange characterized by 2. The private branch exchange according to claim 1, wherein the basic line package has 16 channels and the high-density line package has 32 channels. In exchanger according to claim 1, before Kikai line unit, private telephone exchange, characterized in that it has a voice channel of up to 768 channels. In a method for increasing the number of voice channels in a private branch exchange including a control unit and a line unit, wherein the line unit is provided with a plurality of accommodating slots, the method includes:
Mounting one or a plurality of basic line packages having a plurality of audio channels corresponding to time slots synchronized with a predetermined frequency clock into the accommodation slot;
Mounting one or a plurality of high-density circuit packages having a number of voice channels of a predetermined number of the voice channels corresponding to a time slot synchronized with a frequency clock of a predetermined frequency of the frequency into the accommodating slot;
A control package for controlling the allocation of the voice channel is mounted on the line unit,
Connecting the accommodation slot and the control package with a first audio bus corresponding to the frequency clock of the basic line package;
Connecting the accommodation slot and the control package with a second audio bus corresponding to the frequency clock of the high-density line package;
When the basic line package is installed in the accommodation slot, the time slot data allocated in order from one direction according to the first data format corresponding thereto is transmitted from the control package via the first audio bus. The voice channel of the basic line package is allocated in order from the one direction by the station data sent to the basic line package and supplied from the control unit,
When the high-density line package is installed in the accommodation slot, time slot data assigned in order from the other direction opposite to the one direction according to the second data format corresponding to the high-density line package is received from the control package. Sent to the high-density line package via the second voice bus, and the voice channels of the high-density line package are sequentially allocated from the other direction by the station data,
In this way, a method for increasing the number of voice channels in a private branch exchange is characterized in that a maximum number of predetermined voice channels are secured in the line unit.   11. The method according to claim 10, wherein when a basic line package or a high-density line package is newly added or removed, a maintenance person inputs a line package type and the number of channels from a maintenance controller as setting conditions. A method for densifying the number of voice channels in a private branch exchange. 11. The method according to claim 10, wherein the basic line package has a time slot assignment on the one direction side and / or the high-density line path has a time slot assignment on the other direction side. when Tsu cage is reduced set, the restart of the switch, the time slots assigned to the base line package remains in the empty slot of the one direction and the time slots assigned to the high density line package remaining A method for increasing the number of voice channels in a private branch exchange is characterized by sequentially filling the empty slots in the other direction with the data format.

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