JPH0265395A - Channel diagnosing device - Google Patents

Abstract

PURPOSE:To execute a diagnosis test during operation even in a single channel and to attain the early detection of a channel trouble by reading the contents of a channel memory, detecting an idle channel and executing the diagnosis test to this idle channel. CONSTITUTION:A processing unit 1 transmits an order address and data to a control part 2 and receives an answer. The control part 2 executes control to correspond to an order according to the output of an order decoder 8. When the diagnosis test is executed, a diagnosis tensing circuit reads the contents of a channel memory 3. When the idle channel is detected, an address/data control signal preparing part 7 prevents an address control gate 5 and a data control gate from being enabled even in case a bus setting order is received. On the other hand, an answer control circuit 10 sends the answer so that the processing unit 1 can wait for the sending of the bus setting order only for a time to be needed for the channel diagnosis test to a next receiving order. Thus, while the idle channel is prevented from being used, the channel diagnosis test is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication path diagnostic device for diagnosing communication paths in a switching system having a redundant communication path configuration, and in particular, to a communication path diagnosis device for performing communication path diagnosis during operation. Install a channel diagnostic device that can perform this test.

[Prior Art] Conventionally, in a communication path diagnostic device that performs a diagnostic test on a communication path of a switching system, the test is performed when the communication path is on standby in those having a duplex communication path. However, it was not possible to perform diagnostic tests while the -duplex channel was in operation.

[Problems to be Solved] The conventional communication path diagnosis device described above is designed to perform diagnostic tests only on the standby side of a duplexed communication path, so it is not possible to perform diagnostic tests while the -i communication path is in operation. There was a problem.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a communication line diagnostic device that is capable of performing a diagnostic test during operation even on a redundant communication line.

[=! ! Means for solving the problem] In order to achieve the above object, the communication path diagnosis device of the present invention has the following features:
- In a communication path diagnosis device for performing communication path diagnosis in a switching system having a duplex communication path configuration, the communication path diagnosis test means detects an empty communication path and performs a diagnostic test; When the diagnostic test is started, the path setting order inhibit means inhibits the path setting order until the call path diagnostic test is completed; On the other hand, the configuration includes path setting order sending waiting answer returning means for returning an answer for waiting for sending out a path setting order until the channel diagnostic test is completed.

[Example code] Hereinafter, the present invention will be explained in detail based on the drawings.

FIG. 1 is a block diagram of a communication path diagnosis device according to an embodiment of the present invention, and FIG. 2 is a block diagram of a control section in the communication path diagnosis device of FIG.

In FIG. 1, l is a processing unit (CC), 2 is a control unit (
○DER), 3 is a speech path memory (SPMM), and 4 is a diagnostic test circuit (TEST).

In FIG. 2, 5 is an address control gate, 6 is a data control gate, 7 is an address/data control signal generation section, 8 is an order decoder (DEC), 9 is a control section timing circuit (TIM), and 10 is an answer Control circuit (ANS)
It is.

In the above configuration, the processing device 1 transmits an order address and data to the control unit 2, and receives an answer. Further, the control unit 2 performs control according to the order based on the output of the order decoder 8. At this time, in the case of a path setting order, the address/data control signal generator 7 generates a signal that enables the address control gate 5 and the data control gate 6, unless inhibited by the diagnostic test circuit 4, and Write data to the corresponding address.

Further, the answer control circuit IO creates an answer signal from the signal from the control unit timing circuit 9 and the notification from the diagnostic test circuit 4, and transmits it to the processing device 1.

Now, when performing a diagnostic test, the diagnostic test circuit 4 reads the contents of the communication path memory 3. When an empty channel is detected, the address/data control signal generator 7 does not enable the address control gate 5 and the data control gate even if it receives a path setting order.

On the other hand, the answer control circuit 10 sends an answer such that the processing device al waits for the next received order to send out the path setting order for the time required for the channel diagnosis test.

In this way, the diagnostic test circuit 4 performs the communication path diagnostic test while preventing the detected empty communication path from being used.

In this way, the present embodiment is a communication path diagnosis device that performs communication path diagnosis in a switching system having a duplex communication path configuration. , a diagnostic test circuit that performs a diagnostic test on the empty communication path; and an address/data control signal generation unit that inhibits a path setting order from the processing device until the communication diagnostic test is completed upon receiving an empty communication path detection notification. Similarly, when an empty channel detection notification is received, an answer circuit is provided that returns an answer instructing the next order received from the processing device to wait for the time required for the diagnostic test to send out the path setting order. Effects of the Invention] As explained above, the present invention reads the contents of the communication path memory to detect an empty communication path, and performs a diagnostic test on the empty communication path. This has the advantage that it is possible to provide a communication path diagnostic device that can perform diagnostic tests and also can detect communication path failures plainly.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a communication path diagnosis device according to an embodiment of the present invention, and FIG. 2 is a block diagram of a control section in the communication path diagnosis device of FIG. 1: Processing unit (CC) 7↓ Diagnostic test circuit (TEST) 7: Atres/data control signal creation section

Claims (1)

[Claims] In a call path diagnosis device that performs call path diagnosis in a switching system having a single call path configuration, the empty call path diagnosis test means detects an empty call path and performs a diagnostic test; When the test is started, the path setting order inhibiting means inhibits the path setting order until the call path diagnosis test is completed; and a path setting order sending waiting answer return means for returning an answer for waiting for sending out a path setting order until the completion of a calling path diagnostic test.