DE102014201007B4 - Network access device - Google Patents

Abstract

The present invention discloses a modular network access device having at least a first network connection, for coupling the network access device to a network, with a first replaceable electronic module, which has a suitable light source for data transmission, and with a receiving device, which has at least a first receiving area, which configured to receive the first replaceable electronic module and to couple the received first replaceable electronic module to the at least one first network connector.

Description

FIELD OF THE INVENTION

The present invention relates to a modular network access device.

TECHNICAL BACKGROUND

Mobile devices, such as As Tablet PC, are now used more and more frequently both in the professional environment, as well as in the private sector. Since the data storage of mobile devices is limited, they are usually dependent on a data connection to a server or the Internet to load or store data from this data.

Today, a variety of mobile devices use a wireless data transmission technology, eg. B. WLAN, for transmitting data to establish a data connection with the Internet or a server.

For WLAN networks, certain radio frequencies are specified, depending on the region, in which the WLAN devices can transmit or receive radio signals. Since today often z. B. in multi-family houses a variety of wireless networks are operated in a confined space, the radio signals of the individual wireless networks can overlap. However, a superposition of WLAN networks leads to a reduction of the data rate, which can be achieved in the individual WLAN networks.

WLAN networks are usually provided by a WLAN router, a WLAN extender or a WLAN access point, also WLAN access point or AP, or the like. Such WLAN routers are usually placed on a shelf or attached to the wall and serve solely and solely to provide the wireless network. WLAN routers usually have no other functionality than providing a WLAN. For this reason, WLAN routers are usually placed in places where they do not interfere, for. B. on a shelf in a hallway of a house. Frequently, however, these locations are disadvantageous for the propagation of the radio signals, which leads to a further deterioration of the achievable data rate in the WLAN network.

The US 2009/0 010 651 A1 shows an optical transceiver module which makes it possible to couple an optical network to a wireless network.

The US 2011/0 087 879 A1 shows a communication network with secure access for portable devices.

The US 2010/0177471 A1 shows a system for extending a network device.

The US 2007/0 254 530 A1 shows an installation box with a circuit board as a support element.

The EP 0 865 119 B1 describes a junction box for a distribution network.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a flexible network access device.

This object is achieved by the present invention by a network access device having the features of patent claim 1.

The finding underlying the present invention is that network access devices can be arranged in a very small space and thus can be used very flexibly.

The idea on which the present invention is based now consists in taking this finding into account and providing a possibility of providing a network access device which, on the one hand, is arranged in a very small installation space and, on the other hand, is flexibly expandable in its function. Another idea of the present invention is to use light for data transmission instead of radio signals.

For this purpose, the present invention provides a modular network access device, in which a first replaceable electronic module can be used to transmit data by means of light.

The network access device according to the invention has at least one first network connection, which can be coupled to a network.

The network can z. B. be a power grid of a house. The network can also be a data network, z. As an Ethernet network or a fiber optic network, be. Both data and electrical power can be transmitted in the network.

For coupling the at least one first exchangeable electronic module to the network connection, a receiving device is provided which has a first receiving region for the at least one first exchangeable electronic module. The first receiving area takes the at least one first exchangeable electronic module and electrically couples this to the first network connection.

The present invention thus makes it possible to provide a network access device in which the at least one first replaceable electronic module can be used to transmit data by means of light and which can be installed and exchanged very flexibly.

Advantageous embodiments and further developments emerge from the dependent claims and from the description with reference to the figures.

In one embodiment, the network access device has at least one second network connection for coupling the network access device to at least one network. Furthermore, the network access device has at least one second replaceable electronic module, wherein the receptacle has, for each second replaceable electronic module, a receiving region which is designed to couple the respective second replaceable electronic module to at least one of the second network connections. This allows a flexible extension of the network access device to desired functions or modules.

In one embodiment, the receiving device has a contacting ring with a plurality of electrical insulation displacement contacts, which are coupled to individual electrical lines of the at least one first network connection or of the at least one second network connection. This allows a very simple connection of the individual contacts of Kontaktierrings with the network connections.

In one embodiment, the network connections are designed as the insulation displacement contacts of the contacting ring. The cables for the network connections or other cables are led directly to the insulation displacement contacts and jammed directly with them.

In one embodiment, the contacting ring is annular and the electrical insulation displacement contacts on the ring are arranged such that all insulation displacement contacts, each contacting one of the first network terminals or one of the second network terminals, are juxtaposed. This makes a very simple assignment of the insulation displacement contacts to the network connections possible and errors during installation avoided.

In one embodiment, the Kontaktierring for each insulation displacement contact with this electrically coupled plug contact, wherein the plug contacts are adapted to electrically contact the at least one first replaceable electronic module and / or the at least one second replaceable electronic module. This allows the replaceable electrical modules directly with the insulation displacement contacts and thus z. B. also be coupled to the network ports. Alternatively, insulation displacement contacts, screw contacts, solder contacts or the like can be provided instead of the plug contacts.

In another embodiment, the light source is configured to emit light at a wavelength visible to the human eye. Additionally or alternatively, the light source is designed to emit infrared light. This makes it possible to flexibly adapt the light source to different requirements.

In one embodiment, the light source is designed as an LED and / or as a halogen lamp and / or energy-saving lamp or the like. As a result, a suitable for the respective type of data transmission light source can be selected.

In one embodiment, the at least one first replaceable electronic module has a first program-controlled device, which is designed to modulate the light which emits the light source. This allows easy transmission of data by means of the light emitted by the light source.

Instead of a first program-controlled device, a modulation device may be provided which performs a conversion or a modulation and a demodulation of a data stream obtained via the network connections or a data stream obtained by means of light on data lines of the network. This z. B. frequencies of 500 MHz or 2,000 MHz are used, their demodulation z. B. 10 Gbit / s can result. Higher modulation frequencies of z. B. 3 GHz, 10 GHz and more are also possible.

In one embodiment, the at least one first replaceable electronic module has a first network interface, which is coupled at least to the first network connection. Furthermore, the first program-controlled device is designed to modulate the light which emits the light source based on data received via the first network interface. This allows the light source to be used to transfer data from the network to mobile devices.

In one embodiment, the at least one first exchangeable electronic module has a receiving device which is designed to receive modulated light, in particular modulated light, with a different wavelength from the light of the light source and to forward it to the program-controlled device for demodulation first program-controlled device is designed to forward the demodulated data via the first network interface. As a result, a bidirectional communication between z. As mobile devices and the network access device possible.

In one embodiment, data is transmitted to the network access device using light of the same wavelength as the wavelength of the light emitted by the light source. In such an embodiment, for. B. a time division multiplexing method can be used to transmit data from different data sources without causing interference.

When data is transmitted to the network access device by means of light of a wavelength other than the wavelength of the light emitted by the light source, e.g. B. mobile devices and the network access device simultaneously send or receive data.

In one embodiment, the network access device is configured to output data from the network via the light source of the first replaceable electronic module and to receive data via a network access interface of the first or a second replaceable electronic module. This makes it possible to transmit data over very broadband to the receiver and z. B. control data from the receivers via a conventional technology, such. B. WLAN, to receive. For example, video data of an HD video or an Ultra HD video may be output by modulation of the light source. Control data to select the video or to start or stop the playback, however, can be transmitted via Wi-Fi. This allows z. As well as to use a TV to playback the video data and at the same time to use a notebook or smartphone to control the video.

In one embodiment, the light of the light source can be modulated at a frequency of more than 1 GHz, in particular 3 GHz or more than 3 GHz, in particular also 10 GHz, in order to transmit data. This allows a very high data rate. Furthermore, with such high modulation frequencies, no flickering of the light can be recognized by the human eye.

In one embodiment, the light source transmits data based on the LiFi standard or based on the IEEE 802.15.7 standard.

In one embodiment, the second replaceable electronic module includes a physical quantity sensor. This allows the network access device also z. B. to use to monitor a room.

In one embodiment, the second replaceable electronic module comprises a second program-controlled device and a second network interface, wherein the second network interface is coupled to the second program-controlled device and one of the network ports, and wherein the second program-controlled device is configured to receive measurement data measured by the sensor and forward through the corresponding second network interface. If the measured values of the sensor are forwarded via the network interface, they can be centrally, eg. In a server of the network, and appropriate action is taken.

In one embodiment, the sensor is designed as a fire sensor and / or gas sensor and / or temperature sensor and / or moisture sensor or the like. This makes it possible to use the present invention as a fire alarm or generally as a hazard detector.

In one embodiment, the sensor is designed as a motion sensor or motion detector and / or camera. This makes it possible to use the present invention as an alarm system.

In one embodiment, the at least one first or second replaceable electronic module has a network access interface. This allows conventional devices that are not adapted to transmit data via light to also provide access to the network.

In one embodiment, the network access interface is designed as a WLAN interface and / or Bluetooth interface and / or wireless USB interface or the like. This makes it possible to use the present invention with different network subscribers.

In one embodiment, at least one of the replaceable electronic modules has its own power supply. This allows a self-sufficient operation of the respective module, even without external power supply or in case of failure of the external power supply.

In one embodiment, at least one of the replaceable electronic modules can be supplied with electrical energy via a respective network connection. If the replaceable electronic modules are supplied with electrical energy via the network connections, no separate power supply is required at the installation site of the network access device.

In one embodiment, the network access device has a power supply interface configured to be coupled to an external source of electrical energy and to provide electrical power to the replaceable electronic modules. As a result, the network access device can supply the replaceable electronic modules with electrical energy even if no electrical energy is transmitted via the network interfaces.

In one embodiment, the network access device has a mounting interface that is configured to attach the network access device to a wall and / or ceiling and / or to couple with cables provided in the wall and / or ceiling. This allows a very flexible attachment of the network access device at different locations.

The above embodiments and developments can, if appropriate, combine with each other as desired. Further possible refinements, developments and implementations of the invention also include combinations of features of the invention which have not been explicitly mentioned above or described below with regard to the exemplary embodiments. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.

CONTENTS OF THE DRAWINGS

The present invention will be explained in more detail with reference to the exemplary embodiments indicated in the schematic figures of the drawings. It shows:

1 a block diagram of an embodiment of a network access device according to the invention;

2 a block diagram of another embodiment of a network access device according to the invention; and

3 a block diagram of another embodiment of a network access device according to the invention.

In all figures, the same or functionally identical elements and devices - unless otherwise stated - have been given the same reference numerals.

DESCRIPTION OF EMBODIMENTS

1 shows a block diagram of an embodiment of a network access device according to the invention 1 ,

The network access device 1 indicates a first network connection 2 on that with a network 3 which is an ethernet network 3 is, is coupled.

Furthermore, the network access device 1 a recording device 6 on, which is a first recording area 7 (shown in dashed lines), in which a first exchangeable electronic module 4 is arranged, which with the network connection 2 is coupled.

The first replaceable electronic module 4 has a light source 5 on top of the first replaceable electronic module 4 with the network connection 2 is coupled.

The light source 5 in 1 is as an LED 5 formed, which emits a warm white light, which is visible to the human eye. Other shades are also possible.

The network access device 1 can z. B. be mounted on a wall or ceiling of a room and used there as a direct or indirect lighting.

In other embodiments, the light source may also be an infrared LED 5 , as a halogen lamp 5 or as an energy-saving lamp 5 or the like may be formed.

This being the first replaceable electronic module 4 with the network connection 2 coupled, the LED can 5 via the network connection 2 be supplied with electrical energy. This can z. B. electrical energy according to the Power-Over-Ethernet standard to the LED 5 be transmitted.

If the electrical energy is transmitted according to the PoE standard 802.3af, a maximum power of 15.4 watts can be divided into four power classes. If the electrical energy is transmitted according to the PoE standard 802.3at, a maximum power of 25.5 watts can be divided into five power classes.

Because the LED 5 via the network connection 2 with the network 3 can be paired out of the network 3 Data to the LED 5 be transmitted. The LED 5 is also suitable for transmitting or outputting this data. This can be z. B. by a modulation of the light which the LED 5 radiates, happened.

This can be done by the LED 5 z. B. clocked at a predetermined frequency, so on and off. This happens especially with a frequency that is so high that the human eye can not perceive flicker.

The LED 5 can z. B. be modulated with a frequency that is above 1 GHz, in particular at 3 GHz or 10 GHz.

The LED 5 but can also be modulated such that only the brightness or intensity of the emitted light is varied, so that this variation can be detected by a receiver. This has the advantage that the average light intensity is higher than when switching on and off.

The LED 5 can z. B. can be used to transfer data from a server in a room. There may be different receivers in the room that can receive and evaluate this data stream.

For example, the data stream may comprise a channel in which video data and audio data are transmitted. This video data can be both from a stationary device, such as a receiver of a stereo or a TV, but also from mobile devices, such. As smartphones or tablet PCs are received. In an embodiment, multiple channels may also be arranged in the data stream that have different data. For example, multiple audio or video streams can be transmitted simultaneously.

In one embodiment, the individual channels in the data stream are time multiplexed or frequency multiplexed.

2 shows a block diagram of an embodiment of a network access device according to the invention 1 ,

The network access device 1 has a quadrangular housing, which has a mounting interface 67 that has four mounting holes 67 each of which is located in a corner of the housing. Other housing types are also possible.

The cradle 6 (not explicitly shown) is in the embodiment of 2 as a contact ring 15 educated. The contact ring 15 has 16 insulation displacement contacts 16 - 31 on. There are 8 insulation displacement contacts 16 - 23 evenly over the left half of the contact ring 15 distributed. The other 8 insulation displacement contacts 24 - 31 are even over the right half of the contact ring 15 distributed. In 2 are the insulation displacement contacts 16 - 23 and the insulation displacement contacts 24 - 31 each surrounded by a dashed line, denoted by the reference numerals 2 and 10 Marked are.

In the in 2 illustrated embodiment form the insulation displacement contacts 16 - 23 the first network connection 2 and the insulation displacement contacts 16 - 23 form the second network connection 10 , The insulation displacement contacts 16 - 31 can directly with the individual wires of z. B. Ethernet network cables are connected. The arrangement of insulation displacement contacts 24 - 31 thus allows a very simple coupling of the network access device 1 with the network 4 ,

In 2 are also a variety of plug contacts 32 - 47 shown. The plug contacts 32 - 39 are even over the left half of the contact ring 15 radially outside the insulation displacement contacts 16 - 23 distributed. The plug contacts 40 - 47 are even over the right half of the contact ring 15 radially outside the insulation displacement contacts 24 - 31 distributed.

Further, each one of the insulation displacement contacts 16 - 31 with one of the plug contacts 23 - 47 coupled. In 2 is each an insulation displacement contact 16 - 31 with the corresponding plug contact 32 - 47 coupled, starting from the center of the contact ring 15 in about on through the respective insulation displacement contact 16 - 31 lying straight line. In other embodiments, other interconnections and arrangements of the IDC contacts 16 - 31 and the plug contacts 32 - 47 possible.

In a further embodiment, the receiving device 6 be formed differently. For example, the receiving device 6 Have rows of terminal contacts, in which contacts or contact rails of the replaceable electronic modules can be inserted. Other embodiments are also possible.

3 shows a block diagram of an embodiment of a network access device according to the invention 1 ,

Unlike the network access device 1 out 1 rejects the Network access device 1 of the 3 an energy supply interface 70 on that with an external electrical energy source 71 and with the two interchangeable electronic modules 4 and 11 is coupled to provide them with electrical energy. The power supply interface 70 can z. B. as a socket, for. B. a socket for a hollow connector, be formed.

In a further embodiment, z. B. also only one of the replaceable electronic modules 4 and 11 with the power supply interface 70 be coupled.

Furthermore, the network access device 1 a second network connection 10 on. The cradle 6 also has a second receiving area 12 on.

Furthermore, the first replaceable electronic module 4 a program-controlled device 50 and a first network interface coupled thereto 51 on. The program-controlled device 50 is also with the LED 5 , with a receiving device 52 and with a power supply 65 coupled.

The receiving device 52 is adapted to receive a data stream which is transmitted by means of modulated light. The light may have the same wavelength as the light that the LED 5 radiates. For example, mobile or stationary electronic devices may transmit data to the network access device by means of modulated light 1 transfer. To overlays between the modulated light of the LED 5 and to avoid the modulated light of the electronic devices, z. B. a time division multiplexing method can be used, in which the LED 5 and the mobile or stationary devices alternate with transmitting data.

Alternatively, the light of the mobile or stationary devices may have a different wavelength than the light of the LED 5 , For example, the mobile or stationary devices can transmit infrared light.

The energy supply 65 can z. B. a battery 65 be. Furthermore, the power supply 65 also a combination of a battery and a power generator, eg. As a solar cell to be.

The solar cell can z. B. produce in daylight electrical energy that is stored in the battery and is used when no external power source is present or this fails.

The second replaceable electronic module 11 has a second program-controlled device 56 on that with a network interface 57 is coupled. With the programmable device 56 coupled are also a network access interface 60 , a smoke sensor 55 and a motion sensor 55 ,

The network access interface 60 is as a wireless network access interface 60 trained and can z. B. provide access to a WIFI network, a WLAN network, a Bluetooth network or the like for stationary or mobile electronic devices.

For example, mobile or stationary electronic devices that can not transmit data using modulated light can send data to the network 3 transmitted over a Wi-Fi network, which from the network access interface 60 provided.

The network access interface 60 the second replaceable electronic module 11 can z. B. via the power supply interface 70 and the external electric power source 71 can be supplied with electrical energy. Alternatively, the network access interface 60 but also via the network interface 57 or the second network connection 10 over which the second replaceable electronic module 11 with the network 3 is coupled to be supplied with electrical energy. Likewise, all other components, in particular the LED 5 , the first replaceable electronic module 4 and the second replaceable electronic module 11 via the network connection 2 or the network connection 10 be supplied with electrical energy.

This can be done in the network 3 z. B. be provided a PoE injector. The PoE injector can z. B. be designed as a switch or hub, the electrical energy through the data lines of the network 3 provides. Alternatively, a separate PoE injector may be in the network 3 be provided, which provides this electrical energy.

The first replaceable electronic module 4 or the second replaceable electronic module 11 may each comprise an Ethernet transceiver or other suitable device adapted to separate the electrical energy from the actual data and the data of the program-controlled device 50 respectively. 56 provide.

Alternatively, electrical energy can be supplied to the replaceable electronic modules 4 and 11 be transmitted by means of optical fibers or wirelessly.

The program-controlled device 50 the first replaceable electronic module 4 can z. B. as a system on a chip, SoC, be designed, which specifically as a program-controlled device 50 for the modulation of light, z. B. is designed according to the LiFi standard. Alternatively, the program-controlled device 50 but also a general-purpose processor programmed to work in combination with the LED 5 and the network interface 51 Data from the network 3 output by means of modulated light.

The program-controlled device 50 can over the network interface 51 or also via the light of the LED 5 provide a configuration interface. This configuration interface can, for. B. be configured as an HTTP page that can be viewed or operated with a standard web browser. About the configuration interface can z. B. the type and frequency of the modulation of the light of the LED 5 and the like.

The program-controlled device 56 the second replaceable electronic module 11 can z. As a general purpose processor 56 be trained, over the network interface 57 with the network 3 or with computers in the network 3 communicated.

The program-controlled device 56 may be configured via the network access interface 60 to provide a WLAN network or the like. Furthermore, the network access interface 60 z. B. also provide a DHCP server.

To the operation of the second program-controlled device 56 To configure, the program-controlled device 56 as well as the first programmable device 50 the first replaceable electronic module 4 have a configuration interface, the z. B. can be configured as an HTTP page.

Alternatively, for the configuration of programmable devices 50 and 56 a configuration program is provided, which has a suitable protocol with the program-controlled devices 50 and 56 communicates to configure it.

The program-controlled device 56 may also be the data of the smoke sensor 55 and the motion sensor 55 to a server in the network 3 hand off.

The program-controlled device 56 may additionally or alternatively also be designed to a signal of the smoke detector 55 or the motion sensor 55 z. B. by e-mail, instant messaging, SIP call or the like to forward to a given recipient. For example, an alarm from the smoke detector 55 z. For example, by e-mail to an e-mail address of the fire department, at the same time to an e-mail address of the owner of the property in which the network access device 1 is installed, and the like sent.

At the same time or alternatively, a previously recorded message z. B. via a VoIP call or a SIP call to an emergency call center. In the previously recorded message z. For example, the address of the property can be stored in spoken form, in which the network access device 1 located. Instead of a previously recorded message, the program-controlled device 56 also have a program for converting text to speech. Thus, by a simple configuration of the text, the announcement can be changed without a recording function would be necessary.

Although the present invention has been described above with reference to preferred embodiments, it is not limited thereto, but modifiable in a variety of ways. In particular, the invention can be varied or modified in many ways without deviating from the gist of the invention.

LIST OF REFERENCE NUMBERS

1

Network access device

2

first network connection

3

network

4

first exchangeable electronic module

5

light source

6

cradle

7

first recording area

10

second network connection

11

second exchangeable electronic module

12

second recording area

15

Kontaktierring

16-31

Insulation displacement contact

32-47

plug contact

50

first program-controlled device

51

first network interface

52

receiver

55

sensor

56

second program-controlled device

57

second network interface

60

Network access interface

65

power supply

67

Mounting interface

70

Power supply interface

71

energy

Claims (13)

Modular network access device ( 1 ) with at least one first network connection ( 2 ), for coupling the network access device ( 1 ) to a network ( 3 ), with a first replaceable electronic module ( 4 ), which is a light source suitable for data transmission ( 5 ), with a receiving device ( 6 ), which at least one first receiving area ( 7 ), which is adapted to the first replaceable electronic module ( 4 ) and the first interchangeable electronic module ( 4 ) with the at least one first network connection ( 2 ), characterized in that the receiving device ( 6 ) a contact ring ( 15 ) with a plurality of electrical insulation displacement contacts ( 16 - 31 ), which with individual electrical lines of the at least one first network connection ( 2 ) or the at least one second network connection ( 10 ) and the electrical insulation displacement contacts ( 16 - 31 ) on the contact ring ( 15 ) are arranged such that all insulation displacement contacts ( 16 - 31 ), each one of the first network connections ( 2 ) or one of the second network connections ( 10 ), are arranged side by side. Network access device according to claim 1, with at least one second network connection ( 10 ), for coupling the network access device ( 1 ) to at least one network ( 3 ); with at least one second replaceable electronic module ( 11 ), wherein the receiving device ( 6 ) for every second exchangeable electronic module ( 11 ) a second recording area ( 12 ), which is adapted to the respective second replaceable electronic module ( 11 ) with at least one of the second network connections ( 10 ) to couple. Network access device according to claim 2, characterized in that the contact ring ( 15 ) for each insulation displacement contact ( 16 - 31 ) a with this electrically coupled plug contact ( 32 - 47 ), wherein the plug contacts ( 32 - 47 ) are adapted to the at least one first replaceable electronic module ( 4 ) and / or the at least one second replaceable electronic module ( 11 ) to contact electrically. Network access device according to one of the preceding claims, characterized in that the light source ( 5 ) is adapted to emit light of a wavelength visible to the human eye, and / or is adapted to emit infrared light, the light source ( 5 ) as LED ( 5 ) and / or as a halogen lamp ( 5 ) and / or as energy saving lamp ( 5 ) is trained. Network access device according to one of the preceding claims, characterized in that the at least one first replaceable electronic module ( 4 ) a first program-controlled device ( 50 ), which is adapted to the light, the light source ( 5 ) modulates. Network access device according to claim 5, characterized in that the at least one first exchangeable electronic module ( 4 ) a first network interface ( 51 ), which at least with the first network connection ( 2 ), and the first program-controlled device ( 50 ) is adapted to the light which the light source ( 5 ) radiates based on the first network interface ( 51 ) to modulate received data. Network access device according to one of the preceding claims, characterized in that the at least one first replaceable electronic module ( 4 ) a receiving device ( 52 ), which is adapted to receive modulated light and the first program-controlled device ( 50 ) for demodulation, the first program-controlled device ( 50 ) is adapted to the demodulated data via the first network interface ( 51 ) forward. Network access device according to one of the preceding claims 2 and 3, characterized in that the at least one second replaceable electronic module ( 11 ) at least one sensor ( 55 ) for detecting a physical quantity. Network access device according to claim 8, characterized in that the at least one second exchangeable electronic module ( 11 ) a second program-controlled device ( 56 ) and a second network interface ( 57 ), wherein the second network interface ( 57 ) with the second program-controlled device ( 56 ) and one of the second network connections ( 10 ) and wherein the second program-controlled device ( 56 ) is adapted from the sensor ( 55 ) measured data ( 58 ) and via the corresponding second network interface ( 10 ) forward. Network access device according to one of the preceding claims 8 and 9, characterized in that the sensor ( 55 ) as a fire sensor ( 55 ) and / or gas sensor ( 55 ) and or Temperature sensor ( 55 ) and / or humidity sensor ( 55 ) and / or motion sensor ( 55 ) and / or camera ( 55 ) is trained. Network access device according to one of the preceding claims 2 to 3 and 8 to 10, characterized in that the at least one second replaceable electronic module ( 11 ) a network access interface ( 60 ), having. Network access device according to one of the preceding claims 2 to 3 and 8 to 11, characterized in that at least one of the replaceable electronic modules ( 4 . 11 ) via its own energy supply ( 65 ); and / or that at least one of the replaceable electronic modules ( 4 . 11 ) via a respective network connection ( 2 . 10 ) can be supplied with electrical energy. Network access device according to one of the preceding claims, characterized in that the network access device ( 1 ) an attachment interface ( 67 ) designed to connect the network access device ( 1 ) to attach to a wall and / or ceiling and / or to couple with provided in the wall and / or ceiling space cables.

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