SE527929C2 - High-speed data connection device - Google Patents

Abstract

Usually, a DSL modem must be inserted in the first telephone outlet. The inventive adapting device enables the connection of the DSL modem in any outlet, especially for installations where the telephone outlets are connected in series, but also for parallel outlets, or in a mixed topology. The adapting device is arranged to be connected between a telephone (29) and a telephone outlet (21), and comprises - a first and a second low-pass filter (61) each connected between a terminal at the telephone outlet and a telephone terminal, - a high-pass filter connected between a first and a second terminal of the telephone outlet. The computer can be connected in any telephone outlet if this adapting device is inserted in the other outlets. A switch may be provided to the high-pass filter to enable the automatic selection between a computer connection and a telephone connection in the same outlet.

Description

527 929 WO 01/0805434 describes a similar internal network as that in WO 01/06851, but where both wireless communication and communication via wire are used.

WO 02/0565 7 describes a telephone socket which makes it possible to connect both telephones and computer equipment to the same socket. The socket contains a built-in low pass filter. If an unfiltered signal is desired in a particular socket, the low-pass filter can be bypassed by using the other two pins in the socket, which are not normally used for a telephone connection. In all variants dealt with in the document, the sockets are connected in parallel.

Purpose of the invention The purpose of this invention is thus to enable the connection of a DSL modem to any of a number of series-connected telephones.

SUMMARY OF THE INVENTION The object of the invention is achieved by having a device between the telephone and the telephone socket, which consists of - a first input / output terminal connected to the first connection in the socket, - a second input / output terminal connected to the first connection in the telephone , - a third in / out connection connected to the second connection in the socket, - a fourth in / out connection connected to the second connection in the telephone, - a first low pass fi lter connected between the first and second in / tit connection, - a second low-pass filter (63; 83) connected between the first and second input / output luminaires, - a high-pass filter connected between the first and fourth input / output connectors.

This device separates the high frequency data signals from the low frequency telephone signals, and transmits only the telephone signals to the telephone.

The data signal bypasses the telephone connection and is recombined again with the telephone signal after the telephone connection. If such a device is connected to each telephone socket before a computer is connected, the computer can be connected to any telephone socket. This is especially useful if telephone sockets are connected in series, but can also be used when the sockets are connected in parallel, or in a mixed topology.

The threshold frequencies in the filters should be chosen so that they match the appropriate threshold equations, which depend on the type of connection, ie. the type of telephone connection such as PSTN or ISDN and the type of DSL connection, such as Asymmetríc DSL (ADSL), High bit-rate DSL (HDSL) or Very high bit-rate DSL (VDSL). One skilled in the art is familiar with the various types of telephone and DSL connections.

The device may consist of a switch which either connects the high-pass filter to the fourth input / output connection, or to a fifth input / output connection, which can be connected to a DSL modem.

In this way, the device can be used in all sockets, even where a computer is connected. So even though the device is only needed in the sockets before the socket with a connected computer, they can be found in all sockets. The device will also operate if the sockets are connected in parallel, provided that the device is present in all sockets.

The device can either be part of a telephone, part of a telephone socket or a separate unit connected between a telephone socket and a telephone.

According to the invention, in a telephone connection with at least two sockets in series, at least the socket closest to the telephone network must have the device connected. The invention is described in more detail with reference to the following drawings in which: Fig. 1 shows known technology for connecting a user to a telephone exchange with DSL technology Figs 2a, 2b and 2c show known technology for connecting a telephone to a serial socket: without a connected telephone, with a connected telephone that has the handset on or with a connected telephone that has the handset off.

Fig. 3 shows a general design of the user's equipment according to the invention.

Fig. 4 shows a basic version of the device according to the invention.

Fig. Sa and Sb show a more flexible embodiment of the invention.

Detailed description of the embodiment variants Fig. 1 shows known technology for connecting a user 1 to a telephone station 3 by means of DSL technology. Each connection shown as a line actually consists of a pair of wires. In the telephone station 3 there is a telephone exchange 5 which handles the telephone signals in the usual way. A DSLAM (Digital Subscriber Line Access Multiplexer) 7 terminates a DSL line to the telephone exchange and is usually connected to the Internet. The telephone exchange 5 and DSLAM 7 are both connected to a diplex filter 9 which communicates with another diplex filter 11 of the user 1.

Each of the diplex filters 9, ll has three in / out connections.

The second diplex filter is connected to a first telephone 13 and via a DSL modem 15 to a computer 17. One or more additional telephones 19 can be connected in series with the first telephone 13.

With known technology, the computer must be connected to the first telephone socket, as shown in Fig. 1.

Figs. 2a, 2b and 2c show a common serial telephone socket 21 consisting of a first and a second outgoing connection 23, 25, according to the prior art. Each line in the drawing corresponds to two electrical wires. The specialist arm knows the details of such a connection. Usually, other sockets of the same type will be connected in series with this socket 21. The socket 21 contains a switch 27, which is shown closed in Fig. 2a.

Since no telephone is connected, the telephone signal is sent directly through the socket to the next socket.

In Fig. 2b, a telephone 29, with the handset on, is connected to socket 21. A first telephone connection 31 is connected to the first socket connection 23 and a second telephone connection 33 is connected to the second socket connection 25.

The switch 27 is then open. The signal passes through the switch in the telephone 29 instead of straight through the socket. The telephone 29 contains a switch 35 similar to that of the socket, which is closed when the handset is off, as shown in Fig. 2b. In Fig. 2c, the handset is off. Therefore, switch 35 in the telephone is open. A telephone socket connected to this telephone is disconnected from the connection while the handset is off.

As shown in Fig. 2c, if the handset is picked up on a serially connected telephone, the series is interrupted. The sockets after this phone will not receive any signal.

Fig. 3 shows a general embodiment of the user 41 according to the invention. In the picture, a computer l7 is connected to the last socket in the series, but it does not have to be that way. A telephone 19 is connected to the last socket and there is a telephone socket to which a telephone 13 is connected, before the last socket. Telephones can also be connected in series after the telephone 19. The computer can of course also be connected to the first socket. To avoid interference with the data signal if the handset is picked up on the first telephone 13, a bypass unit 43 consisting of a first and second diplex filters 45, 47 is used. The first diplex filter 45 communicates with a diplex filter on the telephone station (see Fig. 1). It also arranges low speed communication with the telephone 13. The data signals, which have a higher frequency, are sent directly to the second diplex filter 47, which also receives the telephone signal from the first telephone 13. In the last socket there is a third diplex filter 49 which communicates with the second diplex filter 47. The third diplex filter communicates with a telephone 19 and a DSL modem 15, which in turn communicates with the computer 17.

If there are more than two series-connected telephones, each of the telephones before the DSL modem must have a bypass unit 43 consisting of two diplex filters such as 45, 47 which are present for the first telephone 13.

Fig. 4 shows a simple adapter 51 according to a basic embodiment of the invention. The adapter is connected between the socket 21 and the telephone 29. Note that each line in Fig. 4 as before consists of a pair of wires. Each wire can be connected to one connection point, so that each connection in Figs. 2a, 2b 2c and 4 is made with two connection points.

The adapter 51 consists of a first input / output terminal 53 which is connected to the first terminal of the socket, a second input / output terminal 55 for connection to the first terminal of the telephone, a third input / output axis 57 for connection to the socket. the second connection in the telephone and an input / output socket 59 connected to the second connection in the socket.

A first low pass filter 61 is connected between the first 53 and second 55 connections. A second low pass filter 63 is connected between the third 57 and the fourth 59 connection. A high-pass filter is connected between the first and fourth connections 53, 59.

Threshold fi sequences for the transmitters 61, 63, 65 are selected so that the telephone signal will reach the telephone 29 while the data signals, which have a higher fi sequence, will be sent straight through the adapter. Therefore, even if the handset is lit, the data signal will still pass through the socket to the next serially connected socket.

The characteristics of the filters can be substantially the same as those used for DSL modems. 20 25 30 527 929 Thus, a user can choose to which socket a computer is to be connected. At that socket, a diplex filter 49 can be used to separate the telephony and data signals. On. all sockets before this socket must be connected to an adapter similar to the adapter 51 shown in Fig. 4. Sockets after this socket can, but do not have to have an adapter connected.

A more flexible design of the adapter is shown in Figs. Sa and Sb. In this embodiment, the adapter 71, like the one in Fig. 4, consists of a first input / output terminal 73 connected to the first connection in the socket, a second input / output connection 75 connected to the first connection in the telephone, a third input / out connection 77 connected to the second connection in the telephone and a fourth in / out connection connection 79 to the second connection in the socket.

A first low pass filter 81 is connected between the first 73 and the second 75 connection. A second low pass filter 83 is connected between the third 77 and the fourth 79 connection. On the first connection 73, one side of a high-pass filter 85 is connected. The other side of the high pass filter 85 is connected via a switch 87 to either the fourth connection 79 or to the connection 89 to which a DSL modem 91 can be connected. Fig. 5 a shows when a DSL modem is not connected. Then the switch 87 is set so that the high pass filter is connected to the fourth connection. The adapter then operates in the same way as the one shown in Fig. 4.

In Fig. 5b, a DSL modem is connected. Then the switch connects the high-pass filter to the DSL modem, which in turn can be connected to a computer. Thus, the computer will receive the data signals via the DSL modem. The telephone signal will pass through the pass pass from the telephone 29 to the socket 21, as long as the telephone 29 is on the handset.

The switch is preferably controlled mechanically. When a DSL modem is connected to, the switch automatically connects the fifth connection 89. The switch 87 can be made by means of an RJ45 or RJ11 socket with a built-in switch. Such outlets are commercially available. 20 25 30 527 929 Alternatively, the switch is controlled manually.

If the adapter in Figs. Sa and Sb is inserted in all sockets, it will be possible to connect a DSL modem to any socket. Alternatively, the DSL modem can be connected via a diplex filter, as was done when the adapter in Fig. 4 is used.

Adapter 71 also works when all sockets are connected in parallel, provided that adapters are plugged into all sockets. In addition, the adapter 71 can also handle a mixture of parallel and serial telephone sockets.

In the opposite direction, the signals will go the same wave, ie. the telephone signals will pass through the telephone (as long as the handset is off) and the data signals will pass through the high pass filter and thereby pass the telephone.

The physical design of the adapter according to the design may need to vary from country to country, depending on the design of the connection path in each country. Alternatively, the adapter can consist of a separate box, connected to the socket and the telephone via wires. In this case, the box can remain the same.

In the last series socket, a splitter can be used regardless of whether the adapter 51 in Fig. 4 or the one in Figs. 5a and 5b is used in the previous socket. Adapter 71 shown in Figs. Sa and 5b can be used in all sockets.

The adapter according to the procedure can be designed as a separate device that is plugged in between the telephone socket and the telephone. It can also be part of the phone. In that case, the telephone will consist of both the telephone itself 29 as shown in Figs. 4, 5a and 5b, as well as the adapter 51, 71. Such a telephone can be connected to a standard socket in the usual way and used according to the invention. 527 929 9 Alternatively, the adapter can be part of the socket. The socket will then consist of both the socket itself 21 as shown in Fig. 4, Sa and Sb, and adapters 5, 71. If the socket is modified in this way, an ordinary telephone can be connected to the socket in the usual way and used according to the invention.

Claims (1)

A device (51; 7 1) intended to be connected between a telephone (29) and a telephone socket (21), consisting of a first input / output connection (53; 73) connected to the first connection in the socket (21), a second in / out connection (55; 75) connected to the first connection in the telephone (29), a third in / out connection (57,7 7) connected to the second connection in the socket (21), a fourth in / out socket (59; 79) connected to the second connection in the telephone (29), a first low-pass filter (6l; 8l) connected between the first and second in / out sockets (53 , 55; 73, 75), a second low pass filter (63; 83) connected between the first and second input / output terminals (57, 59; 77, 79), a high pass filter connected between the first and fourth input / output terminals. connection (53, 59; 73, 79). Device according to claim 1, wherein the threshold frequencies of the filters are adapted for ADSL. . Device according to one of the preceding claims, which consists of a switch (87) which connects a high-pass filter (85) either to the fourth input / output connection (59) or to a fifth input / output connection (89) which can be connected to a DSL modem. Telephone consisting of a device (51; 71) according to one of the preceding claims. . Telephone sockets consisting of a device (5 1; 71) according to any one of claims 1, 3, 527 929 11 claims 1-3.