JP2854770B2 - Outlet with status display function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outlet having a status display function used in a pre-wiring type network using twisted pair wires, for example, an IEEE.
C such as 10BASE-T conforming to the 802.3 standard
It is used for the SMA / CD twisted pair line LAN.

[0002]

2. Description of the Related Art Hitherto, advance wiring systems using twisted pair wires have been widely used. In this type of advance wiring system, the state of outlets in each floor is managed centrally by patch-down blocks. The individual wiring of this patch-down block and each outlet in the floor correspond one-to-one, and by changing the wiring pattern of the patch-down block, the information wiring pattern on the floor is changed to respond to office layout changes. it can. In many cases, this patch down block is managed by a specific administrator. Thus, as networks have become more complex, the average user has no idea which outlets are connected to the network.

[0003]

When an outlet is used in the above-described conventional wiring system, information indicating whether the outlet is connected to a network is not displayed on the outlet, and the outlet is not displayed. In order to check if there was a connection to, the administrator had to check with the patch down block.
If you cannot confirm with the administrator, connect without confirmation,
There were also troubles that prevented them from joining the network.

[0004] The present invention has been made in view of the above-mentioned points, and an object of the present invention is to eliminate the time and effort of an administrator when joining a network, and to allow anyone to easily create a highly reliable network. An object of the present invention is to provide an outlet with a status display function that can be used.

[0005]

In order to solve the above-mentioned problems, an outlet with a status display function according to the present invention uses a twisted pair wire as a transmission medium and uses a CSMA / CD system as shown in FIG. In the outlet 1 used for the advance wiring system of the used LAN, the network
First balanced-unbalanced conversion means 16 for converting the balanced signal on the twisted pair line 14 transmitted from the link side into an unbalanced signal.
a and a flat line on the twisted pair line 13 transmitted from the terminal side.
Second balanced-unbalanced conversion for converting a balanced signal to an unbalanced signal
Means 16b, the first balanced - first re <br/> link test pulses to detect link test pulses defined unbalanced converter 16a to input unbalanced signal outputted from the IEEE802.3 standard Detecting means 17a and a second equilibrium-complaint
Input the unbalanced signal output from the balance conversion means 16b
Link test pal specified in IEEE802.3 standard
Link test pulse detecting means 17b for detecting
First display means 10a for displaying a connection state between the outlet and the network in accordance with the detection result by the first link test pulse detection means 17a ;
Out pulse according to the detection result by the strike pulse detecting means 17b.
Second display means 1 for displaying the connection state between the outlet and the terminal
0b . The twisted pair line connected to the outlet 1 is composed of a signal line pair 13 for transmitting a balanced signal from the terminal side to the network side and a signal line pair 14 for transmitting a balanced signal from the network side to the terminal side. In addition, as shown in FIG. 3, at least one free signal line pair 15 is provided, and as shown in FIG. 3, inside a distribution device 2 for distributing a twisted pair line on the network side to a plurality of outlets 1, as shown in FIG. A DC power supply circuit 24 for supplying a DC current to the empty signal line pair.
It is preferable that the operating power supply in the outlet 1 is supplied from the empty signal line pair 15.

[0006]

According to the present invention, a balanced signal transmitted from the network side to the terminal side or a balanced signal transmitted from the terminal side to the network side at the outlet 1 of the twisted pair line pre-wiring type LAN using the CSMA / CD system. Is converted into an unbalanced signal by balanced-unbalanced conversion means 16a and 16b, and a link test pulse is detected by the link test pulse detection means 17a and 17b from the unbalanced signal. Side can detect the connection state of the
By displaying the outlets 1a and 10b , the general user can check whether or not the outlet 1 is connected to the network or not , without inquiring the network administrator.
Connection between the network and the user's terminal via the trolet
Can be confirmed whether or not is performed normally .
In addition, if the power consumed by the outlet 1 for detecting the link test pulse and displaying the connection state is supplied using an empty signal line pair of the twisted pair line, the outlet 1 does not need to be provided with a power supply circuit. By providing the circuit in the distribution device 2, one power supply circuit can be shared by a plurality of outlets.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows the internal configuration of an outlet 1 with a status display function according to the present invention. In the figure, reference numeral 10 denotes a display means, for example, which is provided with two LEDs 10a and 10b having different colors so that green and yellow can be displayed. Reference numeral 11 denotes a twisted pair port on the terminal side, which is composed of, for example, an 8-pin modular jack connector, and is configured to be connectable to a twisted pair wire on the terminal side using a modular plug. Reference numeral 12 denotes an outlet on the network side, which is configured to be connected to a pre-wired twisted pair line on the network side. 1
Reference numeral 3 denotes a signal line pair for transmitting a balanced signal transmitted from the terminal to the network, and reference numeral 14 denotes a signal line pair for transmitting a balanced signal transmitted from the network to the terminal. Reference numeral 15 denotes an empty signal line pair.
It is used as a DC power supply line and its ground line. 1
6 a, 16b is balanced - a unbalanced conversion means takes in a balanced signal to be transmitted to the respective signal line pairs 1 4, 1 3,
It has the function of converting it to an unbalanced signal and outputting it. The balanced-unbalanced conversion means 16a, 16b may be formed by a passive conversion circuit using a transformer or may be formed by an active conversion circuit using a differential amplifier. When a differential amplifier is used, operating power is supplied from a DC power supply line using the empty signal line pair 15 and its ground line. Then, 17 a, 17b is a link test pulse detecting means, said balanced - unbalanced converter 16 a, 1
6b from the unbalanced signal output from IEEE 802.3
When a link test pulse specified by the standard is detected, carrier signals 18a and 18b are output, and when there is no link test pulse for a predetermined time or more, output of the carrier signals 18a and 18b is stopped. The display means 10 displays the network connection status at the outlet using a combination of carrier signals output from the link test pulse detection means 17a and 17b . Reference numeral 19 denotes a ground line of the vacant signal line pair 15 used as a DC power supply line and its ground line.

FIG. 2 shows an example of a power supply means for an outlet with a status display function according to the present invention.
In this example, the distribution device 2 for distributing the twisted pair wire from the network side to each outlet has a function as a power supply adapter. In the figure, 21 is MD
This is an F connector to which the MDF cable 3 is connected. A multi-port repeater is connected to the MDF cable 3 via a patch-down block. 22 is IE
It represents a signal line through which two pairs of balanced signals defined by EE802.3 are transmitted. Reference numeral 23 denotes a twisted pair port, to which an outlet with a status display function of the present invention is connected via a twisted pair wire. Reference numeral 24 denotes a DC power supply circuit which outputs a constant DC voltage from an AC voltage supplied from a commercial power supply line 25 of AC 100 V and supplies the same to a DC power supply line 26. The signal line 22 for transmitting two pairs of balanced signals is connected to the outlet signal line pairs 13 and 14, and the DC power supply line 26 is connected to the empty signal line 15 in the outlet.

FIG. 3 shows an example of the configuration of an entire network system using these means. In the figure, 1 is an outlet with a status display function of the present invention, 2 is a power supply adapter of the present invention, 3 is an MDF cable, 4 is a patch down block, 5 is a multiport repeater, and 6 is a twisted pair wire. The outlet 1 with the status display function of the present invention is embedded in a wall or a floor as an information outlet, and the twisted pair wire 6 is previously wired. If this system is used, the connection state of the patch down block 4 can be known through an outlet with a state display function.
You can check the connection with your own terminal. For example,
As an example of LED display on the display means 10, if the outlet 1 is not connected to the multiport repeater 5 via the patch-down block 4, the LED is turned off, and if connected, yellow is detected by detecting a link test pulse on the network side. If the terminal is further connected, it becomes green by detecting the link test pulse on both the network side and the terminal side, so that the presence or absence of the connection of the patch down block 4 and the presence of the own terminal are confirmed by the color of the LED. can do.

[0010]

According to the present invention, a balanced signal transmitted from a network side or a terminal side is converted into an unbalanced signal at an outlet of a twisted pair line leading wiring type LAN using the CSMA / CD system, and a link test pulse is transmitted. Is detected and the detection result is displayed, so whether the outlet is connected to the network, or whether the connection between the network and the user's terminal via the outlet is normally made or not is determined. Since the general user can easily recognize the individual outlets, the network can be easily constructed and the reliability thereof can be improved. In addition, if the operating power for detecting the link test pulse and displaying the connection status at the outlet is supplied via an empty signal line of the twisted pair wire, the power can be supplied from an external power supply circuit to multiple outlets. This has the effect of eliminating the need to incorporate a power supply circuit in each outlet.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an internal configuration of an outlet of the present invention.

FIG. 2 is a block diagram showing an internal configuration of a power adapter used in the present invention.

FIG. 3 is an explanatory diagram showing a configuration example of a network according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Outlet 10 Display means 10a First display means 10b Second display means 11 Twisted pair port on terminal side 12 Twisted pair port on network side 13 Transmission signal line pair to network 14 Transmission signal line pair to terminal side 15 Free signal wire pairs 16 a first balanced - unbalanced converter 16b second balanced - unbalanced conversion unit 17 a first link test pulse detecting means 17b second link test pulse detecting means

Claims (2)

(57) [Claims] 1. A twisted pair cable is used as a transmission medium, and a CS
In the outlet used for the advance wiring system of the LAN using the MA / CD method, the data is sent from the network side.
First balanced-unbalanced conversion means for converting a balanced signal on a twisted pair line into an unbalanced signal, and transmitting from a terminal side
A balanced signal on a twisted pair cable to an unbalanced signal
Inputting the unbalanced signal output from the second balanced-unbalanced converting means and the unbalanced signal output from the first balanced-unbalanced converting means.
E802.3 the first link test pulse detecting means for detecting a link test pulses that are specified in the Standard, the second flat
The unbalanced signal output from the balance-unbalance conversion means is input.
Link test path specified in the IEEE 802.3 standard
Second link test pulse detecting means for detecting a pulse,
First display means for displaying a connection state between outlets and networks in accordance with the detection result by the first link test pulse detecting means, the second link test pulse detected hand
Outlet and terminal connection status according to the detection result
An outlet with a status display function, comprising: a second display means for displaying a status. 2. A transmission medium using a twisted pair wire as a transmission medium,
Used for advanced wiring system of LAN using MA / CD method
Outlets that are flat
Balanced-unbalanced conversion means for converting a balanced signal into an unbalanced signal
And the unbalanced signal output from the balance-unbalance conversion means.
Enter the link text specified in the IEEE802.3 standard
Link test pulse detection means for detecting a strike pulse;
Depending on the detection result by the link test pulse detection means,
Displays the connection status between the network and the terminal in the outlet.
Display means, and a twisted pair line connected to the outlet is a signal line pair for transmitting a balanced signal from the terminal side to the network side, and a signal line for transmitting a balanced signal from the network side to the terminal side. In addition to line pairs,
A distribution device for distributing the twisted pair wires on the network side to a plurality of outlets, comprising a DC power supply circuit for supplying a DC current to the empty signal line pairs; An outlet with a status display function, wherein power is supplied from the empty signal line pair.