JP3001424B2 - Subscriber status monitoring device and subscriber status monitoring method for switching system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subscriber status monitoring device and a subscriber status monitoring method for a switching system, and more particularly to a subscriber status monitoring device and a subscriber status monitoring method for a switching system for monitoring a subscriber line status. It is about.

[0002]

2. Description of the Related Art Conventionally, in a switching system, a call processing controller is not intensively monitored by a subscriber circuit controller, but a call processing controller is intensively monitored. No technology was needed.

[0003]

Therefore, in a conventional switching system, when a message signal for reporting a call origination or disconnection of a subscriber detected by a subscriber circuit controller to a call processing controller is lost, the state of the subscriber is lost. The mismatch between the subscriber state recognizing the call processing control unit and the subscriber state recognizing the subscriber circuit accommodating unit cannot be detected, and the subscriber becomes unusable. there were.

[0004] It is an object of the present invention to improve the reliability by eliminating the unusable state of a subscriber when the state mismatch between the call control states using the subscriber circuit control unit and the call processing control unit occurs. It is in.

[0005]

Means for Solving the Problems To achieve the above object,
Therefore, the subscriber state monitoring device of the switching system of the present invention is
Controls the subscriber line of the subscriber circuit connected to the subscriber terminal.
Is provided in the subscriber's circuit controller that controls
First register means for storing a subscriber signal;
Provided in a call processing control device that performs call processing from the terminal device,
Second register means for storing a signal indicating a call control state;
And a call control state based on the output of each of the register means.
A mismatch detecting means for constantly detecting a mismatch.
The call control state of the register means is the signal line of the message signal.
The mismatch detection procedure is performed as a serial signal using a line other than
It is sent to the stage .

Accordingly, even if the call control states of the subscriber circuit control device and the call processing control device are inconsistent,
The call control state mismatch detection circuit detects a state mismatch between the call control state registers of the subscriber circuit control device and the call processing control device, thereby eliminating the unusable state of the subscriber.

Therefore, according to the present invention, a mismatch between the two call control status registers, ie, the first and second registers, is detected by the mismatch detection circuit so as not to load the call processing capability. Thus, it is possible to provide a highly reliable subscriber state monitoring device and a subscriber state monitoring method for an exchange system.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A subscriber status monitoring apparatus and a subscriber status monitoring method of an exchange system according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory diagram illustrating the configuration of a subscriber status monitoring device of an exchange system according to an embodiment of the present invention.

In FIG. 1, a subscriber status monitoring device of the switching system includes a subscriber telephone 110, a subscriber circuit 101 connected to the subscriber telephone 110 via a telephone line, and a subscriber circuit connected to the subscriber circuit 111 via a communication line. Control device 11, call processing control device 17 and subscriber circuit control device 11 connected to subscriber circuit control device 11 by a communication line
-Division network (TDN) connected to
W) 18.

[0010] The subscriber circuit control unit 11 also receives a message signal 1 from the call processing control unit 15 of the call processing control unit 17.
A call processing control unit 1 for controlling a subscriber circuit 111 by 51
2. Call control status register 13 for storing a call control status signal from call processing control unit 12 and call control status register 13
Detection circuit 14 for detecting a state mismatch based on the call control state signal read from the call control state register 16.
Consists of Further, the call processing control unit 17 transmits a control state message signal 131 from the call processing control unit 12 and each subscriber call control state signal which is a serial signal based on a signal from the call processing control unit 15. Is sent to the discrepancy detecting circuit 14.
Consists of

[0011] The subscriber circuit control device 11 includes the subscriber circuit 1.
01, and the call processing control unit 12
An on-hook signal or an off-hook signal from No. 1 is detected, notified to the call processing control device 17 by a message signal, and the call control state of the call control state register 13 is updated. The subscriber circuit control device 11 sends a call monitoring request, a data processing (DP) reception process activation request, a radio range (RNG) connection request, a response monitoring request, and a disconnection monitoring request by a message signal from the call processing control device 17. When received, the corresponding process is started to update the call control state. The call processing control device 17 controls the subscriber circuit control device 11 and manages call processing of each subscriber, and includes a call report, a data processing report, and a subscriber report from the subscriber circuit control device 11. Response report and disconnection report), and updates the call control status register 16.

The call control status of the call control status register 13 is as follows.
The call control status of the call control status register 16 is sent to the mismatch detection circuit 14 as a serial signal from a separate line from the signal line of the message signal. The mismatch detection circuit 14 compares the two call control status signals received from the call control status register 13 and the call control status register 16 and, if there is a subscriber whose status mismatch has continued for a certain period of time or more, the call processing control unit. 12 is notified. Upon receiving the notification, the call processing control unit 12 accesses the inconsistency detection circuit 14, reads out the call control state of the subscriber due to the occurrence of the state inconsistency sent from the call control state register 16, and determines the called call control state by call control. Set in the status register 13,
A corresponding process can be started to resolve the state mismatch.

FIG. 2 shows the configuration of FIG.
It has a configuration in which a subscriber circuit 121 and a subscriber circuit controller 19 are added. The subscriber circuit controller 19 has a configuration similar to that of the subscriber circuit controller 11, and includes a call processing control unit 12A, a call control status register 13A, and a mismatch detection circuit 14A. The subscriber circuit control unit 19 is connected to the time division network 18 and the call processing control unit 17, and outputs the disconnection monitoring signal of the communication path 200, the message signal line 201 and the subscriber telephone 120 to the time division network 18 or the call processing control unit 17. To send to.

Next, the operation of the subscriber status monitoring device and the subscriber status monitoring method of the switching system according to the embodiment of the present invention will be described. In the description of this operation, FIGS.
This will be described with reference to FIG. As shown in FIG.
When the subscriber 10 calls the subscriber telephone 120 to make a call, the subscriber circuit controller 11 containing the subscriber telephone 110 is called.
Centralized control of call processing with the subscriber circuit controller 19 accommodating the subscriber telephone 120 and the call processing from t300 to t310 in FIG. To achieve.

[0015] The subscriber circuit control device 11 includes the subscriber circuit 1.
01, and the call processing control unit 12
An on-hook signal or an off-hook signal from No. 1 is detected, notified to the call processing control device 17 by a message signal, and the call control state of the call control state register 13 is updated. The subscriber circuit control device 11 sends a call monitoring request, a data processing (DP) reception process activation request, a radio range (RNG) connection request, a response monitoring request, and a disconnection monitoring request by a message signal from the call processing control device 17. When received, the corresponding process is started to update the call control state. The call processing control device 17 controls the subscriber circuit control device 11 and manages call processing of each subscriber, and includes a call report, a data processing report, and a subscriber report from the subscriber circuit control device 11. Response report and disconnection report), and updates the call control status register 16.

The call control status of the call control status register 13 is as follows.
The call control status of the call control status register 16 is sent to the mismatch detection circuit 14 as a serial signal from a separate line from the signal line of the message signal. The mismatch detection circuit 14 compares the two call control status signals received from the call control status register 13 and the call control status register 16 and, if there is a subscriber whose status mismatch has continued for a certain period of time or more, the call processing control unit. 12 is notified. Upon receiving the notification, the call processing control unit 12 accesses the inconsistency detection circuit 14, reads out the call control state of the subscriber due to the occurrence of the state inconsistency sent from the call control state register 16, and determines the called call control state by call control. Set in the status register 13,
Activate the corresponding process to resolve the status mismatch. For example, in state A of the call control status register surrounded by a dotted line in the call processing sequence of FIG. 3, at T312, the subscriber's telephone from the subscriber's circuit controller 11 containing the subscriber's telephone 110 to the call processing controller 17 is called. No 110 disconnection report.

In the state of the subscriber 110 in the call control status register 13 of the subscriber circuit control device 11, a disconnection monitoring status signal is stored in the call control status register 13, and the call control status register 16 of the call processing control device 17 is stored. Subscriber telephone 110
The disconnection monitoring state signal is stored in the state. When the state of the subscriber telephone set 110 stored in the call control state register 13 is the disconnection monitoring state, it is sent to the inconsistency detection circuit 14 and the disconnection monitoring of the state of the subscriber telephone set 110 stored in the call control state register 16 is performed. The state is sent to the mismatch detecting circuit 14 as a serial signal. This mismatch detection circuit 14
Compares the disconnection monitoring state in the state of the subscriber telephone 110 sent from the call control state register 13 with the state of the subscriber telephone 120 sent from the call control state register 16, and finds a difference between the states. If there is no processing, no processing is performed.

Next, when the subscriber telephone set 120 stops the telephone call, the receiver is turned on-hook at T401 to t405 in FIG. The state of the subscriber telephone set 110 in the register 13 is changed from the disconnection monitoring state to the non-monitoring state, and a disconnection report is made to the call processing controller 17 by a message signal 131. In this case,
The disconnection report message signal 131 may not be able to reach the call processing control device 17 due to reasons such as call processing congestion. At this time, since the call control status register 16 of the call processing control device 17 remains in the disconnection monitoring state, the state of the subscriber telephone 110 in the call control status register 13 becomes the non-monitoring state, and is transmitted to the inconsistency detection circuit 14. Then, the state of the subscriber telephone set 110 in the call control state register 16 becomes the disconnection monitoring state. At this time, a serial signal is sent to the mismatch detecting circuit 14.

The mismatch detecting circuit 14 determines that the state of the subscriber telephone set 110 sent from the call control state register 13 is the non-monitoring state and disconnects the state of the subscriber telephone set 110 sent from the call control state register 16. Since the state is different for a certain time compared to the state,
It notifies the call processing control unit 12 of the detection of the mismatch of the state of 0 as a signal. Call processing control unit 12 notified of mismatch detection
Accesses the mismatch detection circuit 14 and reads out that the call control state of the subscriber telephone set 110 sent from the call control state register 16 is the disconnection monitoring state. As a result, the state of the subscriber telephone set 110 in the call control state register 13 is changed from the non-monitoring state to the disconnection monitoring state, the disconnection monitoring processing of the subscriber telephone set 110 is started, and the subscriber circuit controller 11 and the call processing controller 17 subscriber telephones 110
Is eliminated.

At this time, since the subscriber's telephone 110 is on-hook, the call processing control unit 12 which has started the disconnection monitoring processing detects the on-hook signal from the subscriber's telephone 110 and sets the subscriber state in the call control state register 13. From the disconnection monitoring state to the non-monitoring state, and notifies the call processing controller 17 of the disconnection report of the subscriber telephone set 110 by the message signal 131. The call processing control unit 15 of the call processing control device 17 which has received the report of disconnection of the subscriber telephone set 110 issues a call monitoring request of the subscriber telephone set 110 to the subscriber circuit control unit 11 by a message signal to the call control state. The state of the subscriber telephone set 110 in the register 16 is set to the call monitoring state. As a result, the call processing control unit 12 of the subscriber circuit control device 11 that has received the call monitoring request starts the call monitoring process of the subscriber telephone 110, and issues the state of the subscriber telephone 110 in the call control status register 13. Can be call monitoring.

Next, the operation of the subscriber status monitoring device and the subscriber status monitoring method of the switching system according to the embodiment of the present invention will be described more specifically. As shown in FIG. 3, when the subscriber's telephone 110 calls the subscriber's telephone 120 and talks, the subscriber's circuit controller 11 containing the subscriber's telephone 110 and the subscriber's telephone 120 are contained. A call processing function is realized by making a transition to a call control state having a subscriber circuit control device 19 and a call processing control device 17 for centrally controlling call processing.

For example, in the call processing sequence shown in FIG. 3, the subscriber telephone 12 is transmitted from the call processing controller 15 to the subscriber circuit controller 19 containing the subscriber telephone 120.
The operation in the case where the disconnection monitoring request for 0 is not made (exited) will be described based on FIG. Call processing control unit 1
5 sets the state of the subscriber telephone set 120 in the call control status register 16 to the disconnection monitoring state, and sends a disconnection monitoring request of the subscriber telephone set 120 to the subscriber circuit controller 19 by the message signal 15.
Send by 1

At this time, a message signal of a disconnection monitoring request is sent to the subscriber's circuit controller 19 due to congestion of call processing and the like.
When the call cannot be reached, the call control status register 13A of the subscriber circuit control device 19 remains in the non-monitoring state. Therefore, the status of the subscriber telephone 120 in the call control status register 13A changes to the non-monitoring state, and the inconsistency detection circuit 14A Send out. At this time, the subscriber's telephone 1 in the call control status register 16
20 is the disconnection monitoring state, and the mismatch detection circuit 1
4A is transmitted as a serial signal.

When the state of the subscriber's telephone set 120 sent from the call control state register 13A is in the non-monitoring state, the mismatch detecting circuit 14A keeps the subscriber's telephone set 120 sent from the call control state register 16 permanently. Compare with a certain cutting state. As a result of the comparison, if the states differ for a certain period of time or more, a notification of the mismatch of the states of the subscriber telephones 120 is sent to the call processing control unit 12. As a result, the call processing control unit 12 notified of the mismatch detection,
4A, the call control status register 16 reads out the call monitoring status of the subscriber telephone 120 which is the call control status, and reads out the call control status register 13A the status of the subscriber telephone 120 from the non-monitoring status. To the disconnection monitoring status.

Further, in this embodiment, the disconnection monitoring processing of the subscriber telephone set 120 is started, and the inconsistency between the call control states of the subscriber circuit control unit 19 and the subscriber telephone set 120 of the call processing control unit 17 can be eliminated. .

The subscriber state monitoring system for the exchange according to the present embodiment described above includes the subscriber circuit control units 11 and 19.
Are provided with call control status registers 13 and 13A for storing the call control statuses of the subscribers, and a call control status register 16 is provided in the call processing control device 17, and the call control status registers 13 and 13 of the respective subscriber circuit control devices are provided. In order to compare the call control state of the call control state register 13A with the call control state of the call control state register 16, the mismatch detection circuits 14 and 14A detect the call control state and correct the call control state mismatch based on a detection signal corresponding to the call control state mismatch.

Thus, the subscriber's circuit control devices 11, 1
9 and the call processing control device 17, even if a call control state mismatch occurs, the call control state mismatch detection circuits 14, 14
A detects a state mismatch between the call control status registers 14 and 14A and the call control status register 16 of the subscriber circuit control devices 11 and 19, the call processing control device 17, and eliminates the unusable status of the subscriber. Can be.

Therefore, according to the present embodiment, the state mismatch between the two types of call control state registers is detected by the mismatch detection circuit so that the processing capacity of the call processing control units 12 and 12A is not burdened. Thus, a highly reliable subscriber status monitoring system for an exchange can be provided.

[0029]

As described above, according to the present invention, even if a call processing message is lost, a state mismatch can be detected at any time. Can be secured.

Further, according to the present invention, it is possible to prevent a load on a CPU or the like by not imposing a load on a call processing capability or the like in a message communication used for a call process. And the like.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of a subscriber status monitoring device and a subscriber status monitoring method of an exchange system according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a specific configuration of a subscriber status monitoring device of the exchange shown in FIG. 1;

FIG. 3 is a sequence diagram illustrating an operation of the subscriber status monitoring device of the exchange shown in FIG. 1;

FIG. 4 is a sequence diagram for describing an operation subsequent to FIG. 3;

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 subscriber circuit control device 12 call processing control device 13 call control status register 14 mismatch detection circuit 15 call processing control unit 16 call control status register 17 call processing control device 19 subscriber circuit control device 120 subscriber telephone 121 subscriber circuit

Claims (6)

(57) [Claims] 1. A subscriber circuit connected to a subscriber terminal device.
First register means for storing a signal indicating a call control state, which is provided in a subscriber circuit control device for controlling a subscriber line, and a call processing control device for processing a call from the subscriber terminal device ; A second register for storing a signal indicating a call control state , and an output of each of the registers.
A mismatch detecting means for constantly detecting a mismatch in the call control state.
A call control state of the respective register means, a message signal
Unmatched as a serial signal due to a different line from the signal line
A subscriber state monitoring device for an exchange system, which is sent to a detecting means . Wherein said call processing control unit, the call control state DOO
Can, call control state signal of the first and second register means
2. The apparatus according to claim 1, wherein a non-coincidence detection signal is output from said non-coincidence detecting means in response to the command. 3. The apparatus according to claim 1 , wherein said mismatch detecting means includes a first register.
Control means received from the register means and the second register means.
Compare the status signals , and if the status
3. The exchange according to claim 1 , wherein the call processing control unit notifies the call processing control unit of the mismatch of the call control state, and the call processing control unit that has received the notification of the mismatch corrects the state mismatch. System subscriber status monitor. 4. The addition of a subscriber circuit connected to a subscriber terminal device.
The subscriber circuit controller for controlling the subscriber line, stored and storing a signal indicating a call control state, the call processing control device for call processing from the subscriber terminal, a signal indicating a call control state And a signal indicating the call control state,
Sending a serial signal through a separate line, and constantly detecting a call control state mismatch based on the stored call control state signal. . 5. A call control state stored in a call control state.
When a mismatch is detected in response to a status signal,
The method of claim 4, further comprising: outputting an outgoing signal . 6. A step of comparing the stored signals indicating the two call control states, a step of notifying a mismatch of the call control states when the state mismatch has continued for a predetermined period of time or more , and a state mismatch upon receiving the notification of the mismatch. 6. The method according to claim 4, further comprising the step of: modifying the subscriber status.