JPH0313159A - Common line signal device - Google Patents

Abstract

PURPOSE:To easily make operation correspondent even when a communication system is changed by providing a function part for the various kinds of setting, signal velocity selecting circuit, interface selecting circuit and DTE/DCE switching circuit. CONSTITUTION:Since the various kinds of signal velocity from low velocity to high velocity is outputted by a various signal velocity generating circuit 14 for setting the signal velocity, according to the instruction of a setting part 16, a signal velocity selecting circuit 15 applies the designated signal velocity to a parallel/serial converting circuit 6 for common line, imbalanced transmission circuit 8 and balanced transmission circuit 11. For setting an interface circuit, an instruction is applied form the setting part 16 to an interface selecting circuit 7, either the imbalanced transmission circuit 8 or balanced transmission circuit 11 is selected. For setting DTE/DCE, an instruction is applied from the setting part 16 to DTE/DCE switching circuits 9 and 12 and either the DTE or DCE is set. Thus, when a common signal system is constructed, the operation can be easily made correspondent.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a common line signaling device in a common line signaling system, and in particular, the present invention relates to a common line signaling device for various signal speeds and construction of various communication systems. [Prior Art] A common line signaling device using a common line signaling method is based on, for example, TTC standard JT-Q702. As shown in JT-Q703, the signal speed is fixed to only three types, and the interface circuits corresponding to the signal speeds are also individual. Furthermore, the sending period of the fill-in signal of the signal link function section is also individual.

[Problem to be solved by the invention]

The above-mentioned conventional technology has a problem in that the common line signaling device must be replaced when the system is changed in the commonly established common line signaling system.

An object of the present invention is to eliminate the need to replace equipment even if the system is changed in a common line signaling system, and to shorten the time from system change to system reconfiguration.

[Means to solve the problem]

The above problems are related to the clock source that sets the signal speed of the signal data link section to various signal speeds, the interface circuit corresponding to the signal speed, the sending cycle of the fill-in signal of the signal link function section, and the data necessary for the data communication system. The problem is solved by resetting the common line signaling device, which has a switching function between terminal equipment (DTE) and data communication equipment (DCE), to the system construction conditions.

[Effect]

Since the common line signaling device always requires settings for data terminal equipment (DTE) and data communication equipment (DCE) in a communication system, the above settings are set in the common line signaling device. Next, when setting to DTE, the signal speed is supplied from the DCE, but since the DCE must supply the signal speed, the desired signal speed is selected from various clock sources prepared in advance. Once the signal speed is determined, the interface circuit is determined centrally, but special specifications are also available, so the interface circuit can be configured freely.

Furthermore, the sending cycle of the fill-in signal is also the same.

These various settings are made by reading out the setting switches using software. Also, since it depends on software, settings can be made not from the setting switch inside the common line signaling device but from a remote device from the exchange main body. Thereby, the communication system can be easily changed using one common line signaling device.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, in the configuration of an exchange 1 that exchanges common line signals, a common line signaling device 2 connected to the exchange, and a common line signal network 3 that transmits the common line signals from the common line signaling device, the common line The signal device 2 includes a functional section 4 for various settings.
Add.

FIG. 2 shows the configuration of the common line signaling device 2 and the functional section 4 for various settings.

Common line signal data 5 from the exchange is input to a common line parallel-to-serial conversion circuit 6. The common line parallel-to-serial conversion circuit 6 converts the common line signal data 5 into serial data using the output of the signal speed selection circuit 15 and converts it into serial data.
The signal is input to either the unbalanced transmission circuit 8 or the balanced transmission circuit 11, and is then passed through the DTE/DCE switching circuit 9 to the unbalanced transmission connector 10, or via the DTE/DCE switching circuit 12 to the balanced transmission connector 13. , is sent to the common line signal network 3 that transmits the common line signal.

In the above configuration, the software control unit 19
In order to make various settings such as the signal speed, interface circuit, DTE/DCE switching, and fill-in signal sending cycle, the information from the setting switch 20 is read out and the setting section 1
Set via 6.

To set the signal speed, since the various signal speed generation circuit 14 outputs various signal speeds from low speed to high speed, the signal speed selection circuit 15 selects the designated signal speed based on the instruction from the setting section 16. The parallel-to-serial conversion circuit 6 , the unbalanced transmission circuit 8 , and the balanced transmission circuit 11 are provided with the parallel-to-serial conversion circuit 6 .

To set the interface circuit, the setting section 16 instructs the interface selection circuit 7 to select either the unbalanced transmission circuit 8 or the balanced transmission circuit 11. Generally, the unbalanced transmission circuit 8 is used for low speed data, and the balanced transmission circuit 11 is used for high speed data, but various combinations are possible by setting the setting switch 20.

The DTE/DCE settings are made from the setting section 16 to the DTE/DC
The E switching circuit 9.12 is instructed to set either one.

Note that the software control unit 19 receives not only the information of the setting switch 20 but also the setting data 1 from the exchange.
It is also possible to read out and set the setting data transmitting/receiving section 18 in which 7 is stored. FIG. 3 is a flowchart for setting the control unit 19 by software.

According to this embodiment, by providing functional units for various settings, a signal speed selection circuit, an interface selection circuit, and a DTE/DCE switching circuit, various combinations can be made with one common line signal device, either as a single common line signal device or as a single common line signal device. Since settings can be made externally, even if the communication system changes, it can be easily accommodated.

〔Effect of the invention〕

According to the present invention, by providing functional units for various settings, it is possible to easily deal with the construction of a common line signaling system. Furthermore, even if the communication system is changed, there is no need to replace devices, and the time from system change to system reconfiguration can be shortened.

[Brief explanation of drawings]

FIG. 1 is an installation configuration diagram of an embodiment of the present invention, FIG. 2 is an internal configuration diagram of a common line signaling device, and FIG. 3 is a flowchart of software for making various settings within the common line signaling device. 1. Switching equipment for exchanging common line signals Common line signaling device connected to the exchange Common line signal network for transmitting common line signals Functional parts for various settings Common line signal data from the exchange Common line parallel-to-serial conversion circuit Interface selection circuit - Unbalanced transmission circuit - DTE/DCE switching circuit Unbalanced transmission connector Balanced transmission circuit - DTE/DCE switching circuit 3-m - Balanced transmission connector 4 - - Various signal speed generation circuits 5-m = Signal speed selection circuit 6--General settings section 7-m-Setting data from exchange 8--General settings data transmission/reception section 9-m-Software control section 0--General settings switch Fig. 1

Claims (1)

[Claims] 1. An exchange necessary for exchanging common line signals, a common line signal device connected to the exchange, a common line signal network for transmitting the common line signal from the common line signal device, and a common line signal network for transmitting the common line signal. The counterpart exchange is a clock source that sets the signal speed of the signal data link section to various signal speeds, an interface circuit corresponding to the signal speed, and data terminal equipment and data communication equipment necessary for the data communication system. A common line signal device characterized in that a switching function is provided in one common line signal device.