JP3539779B2 - Signal band control device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a signal band control device for controlling a signal band when a line is switched from an old switching device to a new switching device.
[0002]
[Prior art]
It is often the case that a switching device that has been used is replaced with a new switching device whose function has been improved. In this case, the switching device accommodating the line is transferred from the old switching device to the new switching device.
[0003]
When the line is transferred from the old switching device to the new switching device as described above, the line is temporarily double-wired in the wiring device (MDF) interposed between the accommodation terminal and the switching device, The line temporarily exists in both directions of the old switching device and the new switching device. In such a state, in order to stop the new switching device from detecting a call from the terminal side and to assure the effect of the construction work of the new switching device on the line on the terminal side, the double cloth is used. Before the line state is established, it is necessary to disconnect the line of the new switching device.
[0004]
Conventionally, the line of such a new switching device is disconnected by physically switching the conduction state switching circuit in the wiring device to a non-conduction state.
[0005]
After that, the state is shifted to the double wiring state, and the line of the old switching device is disconnected and the line of the new switching device is connected by the conduction state switching circuit, and the line is shifted to the new switching device.
[0006]
[Problems to be solved by the invention]
However, the physical switching of the conduction state switching circuit is manually performed, so that the operation is very complicated and the operation efficiency is low. Physical switching of the conduction state switching circuit is actually repeated for each station number (10,000 lines).
[0007]
Further, when the conduction state switching circuit in the wiring device is physically switched to the non-conduction state or when the conduction state is switched to the conduction state, all the lines (10,000 lines) involved in the switching are switched in the new switching device. However, noise may be detected at the same time as a call signal, and if an abnormal condition occurs in the wiring equipment on the terminal side, there is a possibility that a call failure such as crosstalk may occur. there were.
[0008]
Therefore, disconnection and connection of the line of the new switching device at the time of line transfer between switching devices do not depend on physical operation on the conduction state switching device, and also involve transmission of unnecessary signals that may cause malfunction. There is a need for a new method that can execute transmission of a signal that can verify an abnormal wiring state in a wiring device without the need for such a method.
[0009]
[Means for Solving the Problems]
In order to solve such a problem, the present invention is a signal band control device that is inserted on a path between a wiring device and a switching device and controls information inserted into a signal band of a line on the path. When the same line from the switching device to the wiring device is disconnected at the switching device side and the wiring device side, the power supply from at least the subscriber circuit to the terminal side is stopped when the same circuit from the switching device to the wiring device is disconnected. a subscriber circuit driving signal source for generating a subscriber circuit driving signal for a no-call guarantee signal source for generating a non-call guarantee signal to ensure no call, according to instructions from the external device, the wiring apparatus side For signal bands of a plurality of predetermined lines, insertion of a subscriber circuit drive signal generated by the subscriber circuit drive signal sound source , subscriber circuit drive signal insertion control means for controlling non-insertion, and according to an instruction from an external device, Exchange With respect to the signal band of the plurality of predetermined lines 置側, it provides a signal band control device characterized by having a non-call guarantee signal insertion control means for controlling the insertion of the idle calling guarantee signal, the non-insertion.
[0010]
[Action]
In the signal band control device according to the present invention, when an instruction to insert both signals is given from an external device, the subscriber circuit drive signal insertion control means applies the signal band to a plurality of predetermined lines on the wiring device side according to the instruction. insert controls the subscriber line interface circuit driving signal Te, is sent to the subscriber circuit driving signal to the plurality of predetermined lines, also, no call guarantee signal insertion control means, the switching device side according to the instruction of the plurality of predetermined lines to the signal band, by inserting control idle calling assurance tone, it is sent a no-call guarantee signal to the plurality of predetermined lines.
[0011]
Therefore, in this signal band control device, even if it is the same line, the line portion on the wiring device side and the line portion on the switching device side are surely separated, and the subscriber line drive signal and no Even if the call guarantee signal is transmitted and disconnected, it is possible to prevent malfunctions in the wiring device, the terminal, and the switching device.
[0012]
For example, when replacing the exchange device, if the state of the wiring in the wiring device is changed to the double wiring state for the new exchange device and the old exchange device by using an external device, such a state is obtained. Even if the state shifts to the double wiring state, malfunctions and the like can be reliably prevented, and the work of interrupting the conduction state on the new replacement device side can be eliminated.
[0013]
Each of the subscriber circuit drive signal insertion control means and the non-talk signal insertion control means, when instructed by the external device to not insert both signals, drives the subscriber circuit with respect to the signal bands of a plurality of predetermined lines on the wiring device side. The insertion of a signal and the insertion of a call signal into a signal band of a plurality of predetermined lines on the switching device side are stopped and interrupted.
[0014]
In the above, the operation when the connection or cutoff instruction to both sound sources is given from the external device has been described. However, the operation may be performed by individually giving the connection or cutoff instruction to each sound source from the external device.
[0015]
【Example】
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
[0016]
FIG. 2 shows an example of an arrangement of various devices related to line transfer between switching devices. In FIG. 2, in this example, a switching system including a remote multiplexing device (RT) 1, a central office (CT) 2 and an automatic exchange (for example, a D70 type automatic exchange) 3 is replaced with a new type remote multiplexing device (RT) 4, This figure shows a case where the switching system is switched to a switching system composed of a subscriber line sorting module (LXM) 5 and a new type of automatic exchange (for example, a new type of D70 type automatic exchange) 6, and both exchange systems are common wiring equipment (MDF). The line from the terminal is switched to the new switching system by switching the wiring state inside the wiring device 7.
[0017]
Here, the subscriber line sorting module 5 converts the transmission signal from the analog system terminal and the transmission signal from the ISDN system terminal into an automatic exchange (for example, a D70 type automatic exchange) 6 corresponding to the analog system terminal and an ISDN system (not shown). It has a function of sorting to an automatic exchange corresponding to a terminal, and can itself be regarded as one automatic exchange. In the case of this embodiment, the switching of the line to the analog system terminal is targeted, and the subscriber line distribution module 5 includes a signal band control device 5A in connection with this switching function.
[0018]
Since the transmission lines before and after the subscriber line distribution module 5 handle digital data in which signals of a plurality of subscriber lines are multiplexed, the lines before and after the subscriber line distribution module 5 are called data lines. And
[0019]
FIG. 1 shows a functional block configuration of the signal band control device 5A. In FIG. 1, the signal band control device 5A is mainly composed of a signal band switching device 101 and a software control unit 115. For example, an external work input / output terminal (maintenance terminal) 116 which is a workstation is connected to a software control unit. 115.
[0020]
The signal band switching device 101 includes three data line switching devices 102-1, 102-2, and 102-3, a subscriber circuit drive signal sound source 103, and a non-communication signal sound source 104.
[0021]
Each of the three data line switching devices 102-1, 102-2, and 102-3 includes, for example, a T switch (time division switch), an S switch (space switch), and a T switch. The data line switching devices 102-1, 102-2, and 102-3 cooperate to distribute the transmission signal from the terminal and perform the reverse process. The data line switching device 102-1 switches the signal band of the data line on the remote multiplexing device 4 side in relation to switching of the switching system. The data line switching device 102-3 switches the signal band of the data line on the automatic exchange 6 side in relation to the switching of the switching system.
[0022]
The subscriber circuit drive signal sound source 103 generates a subscriber circuit drive signal (for example, a signal having a predetermined bit pattern). The subscriber circuit drive signal sound source 103 is connected to an input / output terminal of the data line switching device 102-1 on the side of the data line switching device 102-2. In other words, depending on the path state of the data line switching device 102-1, the subscriber circuit drive signal generated by the subscriber circuit drive signal sound source 103 is transmitted to the data line of the remote multiplexing device 4 (therefore, the wiring device 7). Has been made possible.
[0023]
The non-speech signal sound source 104 generates a control signal (for example, a signal having a predetermined bit pattern) that guarantees no-speech. The no-communication signal source 104 is connected to an input / output terminal of the data line switching device 102-3 on the side of the data line switching device 102-2. In other words, depending on the path state of the data line switching device 102-3, a control signal for guaranteeing the non-communication generated by the non-communication signal source 104 can be transmitted to the data line of the automatic exchange 6.
[0024]
The software control unit 115 includes a CPU, a main memory (MM), various input / output ports, and the like in terms of hardware. The software control unit 115 is divided into functions in terms of software related to switching of the switching system which is developed in the main memory and executed by the CPU, and is divided into a device control unit 106, a signal band control unit 107, a data line information management unit 108, It comprises an information management unit 109, a signal band control mode determination unit 110, an input / output terminal reception unit 111, a signal band information notification control unit 112, a signal band information memory 113, and a data line information memory 114.
[0025]
The input / output terminal accepting unit 111 serves as a receiving port for instructions from the input / output terminal 116 and a passing port for notifications to the input / output terminal 116. For example, it receives a control request for a signal band from the input / output terminal 116 or notifies the input / output terminal 116 of the sound source connection status of the signal band.
[0026]
The signal band control mode determining unit 110 analyzes a signal band control request instructed by the input / output terminal 116 and determines an actual operation mode of the signal band of the signal band switching device 101.
[0027]
The signal band information management unit 109 controls the connection state of the signal band to the subscriber circuit driving signal sound source 103 and the non-talking signal sound source 104, and thus the sending condition of the subscriber circuit driving signal and the sending condition of the control signal for guaranteeing no talk. The connection status of the signal band managed by the management unit 109 is stored in the signal band information memory 113.
[0028]
The data line information management unit 108 manages data line information such as subscriber identification information and path information. Data line information managed by the management unit 108 is stored in the data line information memory 114.
[0029]
The signal band control unit 107 controls the actual control mode of the signal band determined by the signal band control mode determination unit 110, the connection status of the signal band managed by the signal band information management unit 109, and the data line information management unit. Based on data line information and the like managed by 108, the operation control method of the signal band switching device 101 is instructed to the device control unit 106.
[0030]
The device control unit 106 directly controls the operation of the signal band switching device 101 according to the operation control method instructed by the signal band control unit 107.
[0031]
The signal band information notification control unit 112 transmits the sound source connection status of the current signal band stored in the signal band information memory 113 managed by the signal band information management unit 109 via the input / output terminal reception unit 111. This is to notify the input / output terminal 116.
[0032]
FIG. 3 is a flowchart showing the processing of the software control unit 115 when the input / output terminal 116 issues a signal bandwidth control request instruction. In particular, it shows processing when the control request is a sound source connection request or a sound source cutoff request.
[0033]
When the subscriber line is switched from the old switching system (1-3) to the new switching system (4-6) shown in FIG. 2, during the switching operation, the subscriber line from the terminal passes through the wiring device 7. In the double wiring state connected to both the old switching system (1-3) and the new switching system (4-6), before making the double wiring state, the operator sets the input / output terminal 116 to the input / output terminal 116. By using the signal band control device 5A, a control request for a signal band, which is a sound source connection request, is given. When the double wiring state in the wiring apparatus 7 is changed from the wiring state of the old exchange system (1 to 3) to the wiring state of the new exchange system (4 to 6) only, Uses the input / output terminal 116 to give a signal band control request, which is a sound source cutoff request, to the signal band control device 5A.
[0034]
When the software control unit 115 starts the series of processes shown in FIG. 3 upon receiving the control signal band control request, the software control unit 115 analyzes the received signal band control request, and the control request is a request that may be controlled. It is checked whether there is consistency (steps 201 and 202).
[0035]
In FIG. 1 and FIG. 2, for simplicity of illustration, for example, the interface circuit on the side of the remote multiplexer in the subscriber line sorting module 5 is omitted, but the interface circuit connected to a plurality of remote multiplexers 4 is omitted. Naturally exists. The interface circuit is configured for each package, a plurality of packages constitute one unit, and a plurality of units exist. The control request for the control signal band includes information for specifying such a package or unit, but the control request for a unit or package that is not mounted is considered to be inconsistent. Further, in the case of this embodiment, the control of the signal band is executed only for the analog transmission signal, and the package or unit relating to the control signal band control request is for the ISDN transmission signal. If so, it is considered inconsistent. As described above, an example of the consistency determination has been described. In this way, it is determined whether or not the control request is acceptable.
[0036]
If the received control request does not match as the request, the control request is determined to be abnormal, and a series of processing is terminated as abnormal. In this case, for example, the input / output terminal 116 is notified of the abnormality and displayed.
[0037]
If the control requests match, the software control unit 115 determines the actual operation mode of the signal band of the received signal band switching device 101 based on the received control request (step 203).
[0038]
In the case of this embodiment, the subscriber circuit drive signal source 103 is connected to the data line switching circuit 102-1 as the operation mode, and the no-talk signal source 104 is connected to the data line switch circuit 102-3. A normal mode (NORMAL mode) for releasing the connection state of the subscriber circuit drive signal source 103 and / or the non-communication signal source 104 with the data line switching circuits 102-1 and / or 102-3 is provided. The software control unit 105 recognizes which operation mode the control request received this time relates to.
[0039]
Next, the software control unit 115 determines a data line related to the control request, and searches the data line information memory 114 for all information on the determined data line (steps 204 and 205). For example, since line switching is performed on a station number basis (10,000 lines), the control request also includes information specifying the station number, etc., but the subscriber line distribution on which the remote multiplexing device 4 and the signal band control device 5A are mounted. The number of lines in a super handling group consisting of a plurality of (32) time slots, which is a unit to be exchanged between modules 5, is smaller than that. Therefore, after recognizing the super-handling group (predetermined number of data lines) corresponding to the station number specified in the control request, the software control unit 115 transmits data line information such as path information in the signal band switching device 101 to the data. It is obtained by searching the line information memory 114.
[0040]
Then, based on the searched data line information (particularly, the path information), the connection position or cutoff position between the subscriber circuit drive signal sound source 103 and the data line switching circuit 102-1 and / or the non-communication signal sound source 104 A connection position and a disconnection position with the data line switching circuit 102-3 are determined (step 206).
[0041]
For example, in the case of the subscriber circuit drive mode, the connection position between the subscriber circuit drive signal sound source 103 and the data line switching circuit 102-1 is determined. The connection position with the switching circuit 102-3 is determined. If the connection mode is the normal mode, the cutoff position between the subscriber circuit drive signal sound source 103 and the data line switching circuit 102-1 and the non-speech signal sound source 104 and the data line switching. The interruption position with the circuit 102-3 is determined.
[0042]
As described above, the subscriber line sorting module 5 converts the transmission signal from the analog terminal and the transmission signal from the ISDN terminal into an automatic switch 6 corresponding to the analog terminal and an ISDN terminal (not shown). Therefore, the data line and the path are determined on a one-to-one basis, and if the data line is determined, the path and thus the connection position are determined.
[0043]
Next, after determining how to specifically operate the signal band switching apparatus 101, based on the result of the decision and the connection position determined above, the signal band switching apparatus 101 A connection operation or a disconnection operation of the circuit drive signal sound source 103 and the no-communication signal sound source 104 is instructed (steps 207 and 208).
[0044]
Then, the software control unit 115 determines whether or not the signal band switching apparatus 101 has operated as instructed. If not, the software control unit 115 ends a series of processing as abnormal, and In the case of the operation, the connection state of the sound source is stored in the signal band information memory 113, and then a series of processing is terminated (steps 209 and 210).
[0045]
FIG. 4 shows a signal band of a transmission signal of this embodiment. The transmission signal band is composed of a control signal band in which control signals such as calling and ending calls are inserted, and a voice band in which a voice signal is inserted, and the control signal band and the voice band are grouped for each super handling group. ing. In the case of this embodiment, the subscriber circuit drive signal pattern generated by the subscriber circuit drive signal sound source 103 is inserted into the control signal band, thereby guaranteeing a no-communication state in which the no-communication signal source 104 is generated. A non-communication bit pattern is also inserted into the control signal band.
[0046]
FIG. 5 is a flowchart showing the processing of the software control unit 115 in the case where the input / output terminal 116 instructs the notification request of the sound source connection status.
[0047]
When the software control unit 115 starts the series of processes illustrated in FIG. 5 upon receipt of the notification request for the sound source connection status, the software control unit 115 extracts all the connection statuses of the sound sources stored in the signal band information memory 113 and sends them to the input / output terminal 116. Then, a series of processing is completed (steps 301 and 302). As a result, the input / output terminal 116 displays the connection status of the sound source.
[0048]
Therefore, according to the above-described embodiment, before the wiring device 7 is switched from the old switching system (1 to 3) to the new switching system (4 to 6), the subscriber circuit is switched to the double wiring state. If the drive signal sound source 103 and the non-speech signal sound source 104 are connected to the data line switching devices 102-1 and 102-3, respectively, the subscriber circuit drive signal will remain on the terminal side even in the double-wired state. Then, the subscriber's circuit stops supplying power to the subscriber, and a signal is transmitted to the automatic exchange 6 to assure no-communication. At the time of the transition, each unit malfunctions or calls all at once. It is possible to prevent sounds from being generated.
[0049]
Also, according to the above embodiment, the line can be cut off by connecting the subscriber circuit drive signal sound source 103 and the no-communication signal sound source 104 to the data line switching devices 102-1 and 102-3, respectively. There is no need to physically switch the conduction state switching circuit in the wiring device to the non-conduction state, and the work efficiency at the time of line switching can be improved. Actually, as the wiring device 7, there is a robot which can remotely change the connection of the jumper line by using a robot. When such a wiring device 7 is applied, the input / output terminal 106 for the subscriber line distribution module 5 is used. In this case, the wiring state can be changed by the wiring change operation, and in this case, an operator is not required in the vicinity of the wiring device 7, and the working efficiency can be further improved.
[0050]
Furthermore, according to the above embodiment, since the function of centrally managing the connection state of the sound source and transferring it to the input / output terminal 116 for display as necessary is provided, the work procedure can be simplified and the work efficiency can be improved from this aspect as well. Can be expected to improve.
[0051]
Furthermore, according to the above embodiment, the connection control of only the subscriber circuit drive signal sound source 103 and the connection control of the non-speech signal source 104 alone can be executed. In addition, when a line is added or maintenance is performed, various signal bands can be controlled in accordance with the contents of the maintenance.
[0052]
In the above embodiment, the signal band control device 5A is provided in the subscriber line distribution module 5, but it may be provided in the subscriber switching device or provided as a single device. You may do it.
[0053]
Further, in the above embodiment, the subscriber circuit drive signal sound source 103 is connected to the input / output terminal of the data line switching device 102-1 on the side of the data line switching device 102-2, and the no-communication signal source 104 is connected to the data line switching device 102-1. Although the one connected to the input / output terminal of the data line switching device 102-2 of the 102-3 is shown, the present invention is not limited to this connection position. It is also possible to connect the line switching device 102-3 to the input / output terminal on the automatic switching unit 6 side and to connect the non-speech signal source 104 to the data line switching device 102-1 on the remote multiplexing device 4 side. good.
[0054]
Further, the signal band switching device 101 is not limited to the device using the TST switch configuration.
[0055]
【The invention's effect】
As described above, according to the present invention, as in the time of maintenance when the line Transfers between changer, cleavage of a plurality of lines, if the connection is required, cutting their lines, connections, wiring This can be performed without relying on physical operation on the conduction state switching device in the device, and without sending unnecessary signals that may cause malfunction.
[Brief description of the drawings]
FIG. 1 is a functional block diagram illustrating a configuration of a signal band control device according to an embodiment.
FIG. 2 is a block diagram illustrating a switching system to which the signal band control device according to the embodiment is applied.
FIG. 3 is an operation flowchart of the signal band control device of the embodiment.
FIG. 4 is an explanatory diagram of a signal band according to the embodiment.
FIG. 5 is an operation flowchart when transferring a sound source connection state according to the embodiment;
[Explanation of symbols]
5A: Signal band control device, 101: Signal band switching device, 102-1 to 102-3: Data line switching device, 103: Subscriber circuit drive signal sound source, 104: Non-communication signal sound source, 106: Device control unit, 107 ························································································································································································································· Signal band information memory, 114: data line information memory, 115: software control unit, 116: input / output terminal.

Claims (2)

A signal band control device that is inserted on a path between the wiring device and the switching device and controls information inserted into a signal band of a line on the path,
To control the driving of the subscriber's circuit and to stop the power supply from at least the subscriber's circuit to the terminal when the same line from the switching device to the wiring device is disconnected at the switching device side and the wiring device side. A subscriber circuit drive signal sound source for generating a subscriber circuit drive signal of
And a non-call guarantee signal source for generating a non-call guarantee signal to guarantee the non-call,
A subscriber circuit drive signal for controlling insertion / non-insertion of a subscriber circuit drive signal generated by the subscriber circuit drive signal sound source with respect to signal bands of a plurality of predetermined lines on the wiring device side in accordance with an instruction from an external device. Insertion control means;
In accordance with an instruction from the external device, with respect to the signal band of the plurality of predetermined lines of the switching device side, the signal is characterized by having a non-call guarantee signal insertion control means for controlling the insertion of the idle calling guarantee signal, the non-insertion Bandwidth control device. Centralized management of the insertion and non-insertion status of the subscriber circuit drive signal into the signal band of the line on the wiring device side, and the insertion and non-insertion status of the no-voice guarantee signal on the signal band of the line on the switching device side Signal insertion status management means to perform
In accordance with an instruction from the external device, the signal band according to claim 1, further comprising an insertion status information the signal insertion state management unit is centrally manages the insertion status transfer means for transferring to the external device Control device.

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