JPH04144433A - Multi-media multiplexer - Google Patents

Abstract

PURPOSE:To make it possible to monitor a line state during the on-line of data by inserting a test pattern into a counter station alarm pit part in the 1st frame of X50-frame constitution at every line, transmitting the test pattern simultaneously with data and monitoring the test pattern on a reception side. CONSTITUTION:A slow side multiplexing part 5 slowly multiplexes a frame synchronizing bit F, a spare bit S and a prescribed test pattern A outputted by a line monitoring part 6 to inputted data D1 to D6 and inputs the multiplexed results to a multiplex conversion part 7. The monitoring part 6 detects the test pattern A and outputs its detection information to a control part 10 for managing a line state and a line test and an alarm display part 11. Thus, the line state is stored in the control part 10, and when the test pattern is not detected, fault information is visually or audibly displayed on the display part 11. Consequently, the line status can be monitored during the on-line of data.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multimedia multiplexing device, and more particularly to line monitoring using a predetermined test pattern inserted into the game warning bit portion of an X50 frame multiplexed at a particularly low speed.

[Conventional technology]

Conventionally, this type of multimedia multiplexing device has not been able to perform line monitoring while online. For this reason, during regular maintenance of systems such as corporate information networks, online data transmission is stopped and line tests are performed by connecting the line monitoring function of the multimedia multiplexing device or an external measuring device.

[Problem to be solved by the invention]

The conventional multimedia multiplexing device described above cannot monitor the line while data is online, so it is difficult to respond to a sudden failure, and it takes a long time to find the cause of the failure. As a result, service outages sometimes caused inconvenience to users.

The purpose of the present invention is to insert a test pattern into the game warning bit part of the X50 frame structure for each line and transmit it simultaneously with the data, and to monitor this pattern on the receiving side while the data is online. l! An object of the present invention is to provide a multimedia multiplexing device capable of line-by-line monitoring.

[Means to solve the problem]

The multimedia multiplexing device of the present invention accommodates various terminal devices in a low-speed line termination section, and transmits data from the terminal devices to
In a multimedia multiplexing device that transmits data by low-speed multiplexing into a 50-frame configuration, multiplexing it to a predetermined communication speed, and connecting to a high-speed digital line via a high-speed line termination section, the low-speed multiplexing is performed at the time of data transmission. It has a monitoring function that inserts a test pattern for line monitoring into a predetermined frame of the X50 frame structure and monitors the test pattern on the receiving side to monitor the normality of the high-speed digital line.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.
) is a configuration diagram of an X50 frame, and FIG. 2(B) is a configuration diagram of an X50 frame in which a test pattern A is provided in the first frame, showing an embodiment of the present invention.

Figure 1 shows a low-speed line termination section 4-1, 4-2 that interfaces with the various terminal devices accommodated, a low-speed side multiplexing section 5 that generates and separates the A multimedia multiplexing device 1 includes a line monitoring section 6 that monitors test patterns, a multiplex conversion section 7 that multiplexes and demultiplexes transmitted and received data, and a high-speed line termination section 8 that interfaces with a high-speed digital line, and terminal devices 2 and 3. , high-speed digital line 9-1゜9-2,
A control unit 10 that monitors the line status and an alarm display unit 11 that reports a failure when a test pattern cannot be detected.
It consists of

A data signal sent from the terminal device 2 is input to the low-speed side multiplexing section 5 via the low-speed line termination section 4-1. The low-speed multiplexer 5 adds a frame synchronization bit F, a spare bit S, and a predetermined test pattern A to the input data D1 to D6 as shown in FIG. 2(A).
is multiplexed at low speed and input to the multiplex converter 7. The multiplex conversion unit 7 compresses the low-speed multiplexed data signal to a predetermined communication speed, for example, 16 kbps to 6/J, kbps, multiplexes it with other low-speed multiplexed signals (not shown), and converts it to a high-speed line. It is output to the high-speed digital line 9-1 via the termination section 8.

Further, the multiplexed signal received from the high-speed digital line 9-2 is input to the multiplex conversion unit 7 via the high-speed line termination unit 8,
The multiplex converter 7 expands the signal at a predetermined communication speed, for example, 64 kbps, to 6 k Ill ps, and separates it from other low-speed multiplexed signals (not shown). As an example of the separated terminal device 3, a 16 kbps data signal is input to the low-speed multiplexer 5 and separated into data D1 to D6, frame synchronization bits F, and spare pits S. The line monitoring unit 6 detects the test pattern A included in the separated first frame, and sends the detection +1\ information to the control unit 10 that manages the line status and line test, and the alarm display unit 11.
Output to. In this way, the line status is stored in the control unit 10, and fault information is displayed visually or audibly in the alarm display unit 1 when no test pattern is detected.

〔Effect of the invention〕

As explained above, the present invention inserts a test pattern into the game warning bit part of the first frame of the X50 frame configuration for each line, transmits it simultaneously with the data, and monitors this test pattern on the receiving side. This has the effect of being able to monitor the line status while data is online. Furthermore, line failures can be easily detected, allowing quick response to failures and avoiding service outages due to failures.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2(A) is an X50 frame configuration diagram, and FIG. 2(B) is a χ5050 frame configuration with test pattern 8 in the first frame showing an embodiment of the present invention. 1... Multimedia multiplexing device, 2.3... Terminal device, 4-1.4-2... Low speed line termination section, 5...
Low-speed side multiplexing unit, 6... Line monitoring unit, 7... Multiplex conversion unit, 8... High-speed line termination unit, 9-1.9-2...
High-speed digital line, 10...control unit, 11...alarm display unit.

Claims (1)

[Claims] After accommodating various terminal devices at the low-speed line terminal and low-speed multiplexing the data from the terminal devices into an X50 frame configuration,
In a multimedia multiplexing device that multiplexes data to a predetermined communication speed and connects it to a high-speed digital line via a high-speed line termination section to transmit data, line monitoring is performed on a predetermined frame of the X50 frame configuration that has been multiplexed at low speed when transmitting data. 1. A multimedia multiplexing device characterized by inserting a test pattern for a high-speed digital line and monitoring the test pattern on a receiving side to monitor the normality of a high-speed digital line.