NL1038635C2

NL1038635C2 - Soundproof communication booth access system.

Info

Publication number: NL1038635C2
Application number: NL1038635A
Authority: NL
Inventors: Hein Marnix Erasmus Franken
Original assignee: Franken
Priority date: 2011-03-04
Filing date: 2011-03-04
Publication date: 2012-09-05

Description

Soundproof communication booth access system 5 FIELD OF THE INVENTION

The invention relates to the field of communication, and more specifically to a communication booth. In particular, the invention relates to a soundproof communication booth access system. The invention further relates to a soundproof communication booth for 10 use in the communication booth access system. The invention further relates to a method for accessing a communication booth.

Herein, communication comprises speech communication, video communication, and/or data communication in general. The communication is made with from the communication booth through a wired or wireless communication network.

15

BACKGROUND OF THE INVENTION

Over the years, telephone devices are used both in private and in public. In the past, outdoor telephone booths were created at particular locations to provide access for everyone 20 to make a phone call. Such telephone booths consist of an open structure where a wired telephone device is provided which can be used against a payment, either in coins or using debit or credit cards.

In addition, mobile phones (cell phones) are commonly used. The use of mobile phones does not depend on a particular location. The primary function of a mobile phone is 25 social: it enables the user to communicate with others. At the same time using a mobile phone can be profoundly asocial, especially to people in the immediate vicinity of the phone user. A mobile phone may be integrated in a so-called smart phone comprising a computer with network communication facilities. Mobile devices may communicate through telecommunication networks like the GSM, UMTS, LTE, Internet and other networks.

30 Mobile phones used in public places and other congested areas such as railway station, bus station, airport, restaurant, shopping centre, etc have a significant drawback regarding privacy and civil acceptance. People in the vicinity always hear the conversation. It is normally not desirable for a caller to reveal the contents of their conversations to everyone near them. Conversely, many people in public environment feel disturbed when a person 35 nearby is carrying on a loud private conversation on a mobile. At the same time, the person making the call in public may feel hindered to speak freely about private items.

1038635 -2-

In addition to the disturbance issues, certain environments can cause poor acoustic performance to mobile users. Because of the design of most mobiles, a lot of unwanted background noise can be transmitted through the device microphone during conversations. Windy days, loud traffic, concerts etc. can make it difficult or impossible to converse through a 5 mobile.

Therefore, a need exists to increase the user experience of mobile phone conversations in congested areas from the points of view of 1) the person making the call; 2) the public in general in the vicinity of the person making the call; and 3) the person at the other end of the line.

10 A similar need exists for persons using other types of electronic communication equipment, such as personal computers or smart phones, having a display screen showing information having a private character. The person using the communication equipment may wish other people not to see the information on the display screen, while the other people may wish not to be confronted with information not intended for them.

15

SUMMARY OF THE INVENTION

It would be desirable to provide a private space to a person using communication equipment.

20 To better address this concern, in a first aspect of the invention a soundproof communication booth access system is provided, comprising, comprising a soundproof door for accessing the soundproof booth; a locking device for locking or unlocking the door; and a locking control system configured to control the locking device to lock or unlock the door. The locking control system comprises: a receiving device for receiving an access code, and a 25 validator for checking the access code received by the receiving device. The locking control system is configured to perform the following operations: if the validator validates the access code, the locking control system controls via the control unit the locking device to unlock the door, and if the validator does not validate the access code, the control unit controls the locking device to lock the door.

30 According to the invention, a soundproof communication booth which may provide, with door closed, a sound reduction of at least 14 dB(A) in the audible frequency range 50-7.000Hz between interior and exterior of the communication booth and vice versa, can only be accessed after providing a valid access code to the locking control system, through the receiving device. The receiving device and/or the validator may be located at or in the 35 communication booth, or in its vicinity, but may also be part of a wireless communication system or a computer system coupled thereto.

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When a user wishes to use a soundproof communication booth, which is currently unused, the user will find the door of the communication booth closed and locked. To unlock the door for it to be opened by the user, the user is to generate a valid access code, and provide it to the locking control system. Once the user is in the communication booth, the user 5 may make or continue his mobile telephone call. The user may also, if available, connect any communication equipment to be used to a wired or wireless interface provided at the communication booth, as well as AC power to load the batteries.

In an embodiment, the message comprises a user identification code, e.g. to facilitate billing of the use of the communication booth to an account indicated beforehand by the user. 10 In another embodiment, the booth is provided with a reader for reading data from an

Integrated Circuit, IC, chip card, wherein the reader is configured to generate the access code and supply the access code to the receiving device. For such communication, Near Field Communication, NFC, may be used. In particular in public transport, the use of IC chip cards to gain a valid access to different modes of public transport is common, and the same IC chip 15 card can be used in the communication booth access system according to the present invention. The IC chip card, having NFC communication capability, may be an anonymous IC chip card, or a personal(ized) IC chip card. In such configuration, the locking control system may be in or at or in the vicinity of the booth, but may also be remote from the booth.

In an embodiment, the reader is further configured to generate a booth code and 20 supply the booth code to the receiving device. Thus, a use of a particular booth may be registered. The same booth code may be transferred to the IC chip card memory when communicating with the reader to gain access to the booth associated with the reader.

In another embodiment, the access system is configured for receiving an electronic message containing the access code. Such a message may be sent from a mobile device of 25 a user, where the user may compose and send such message through a wireless network to a predetermined destination using the SMS or a similar functionality provided on the mobile device. The message is received in the wireless network and via the Central Application redirected to the locking control system coupled to the wireless network through appropriate interfaces. The access code may also be sent in a message originating from a dedicated 30 application (“App”) running on the user’s mobile device, and activated by the user.

In an embodiment, the booth carries a readable booth code, and the message comprises the booth code. When seeking access to a communication booth, the user may be prompted to insert the booth code into the message sent to the receiving device of the locking control system. The locking control system may then determine the communication booth and 35 its associated actual locking device to actuate on a validation of the access code (and the booth code). It is noted that other methods of determining the actual locking device to be actuated on receipt of a valid access code may be used. An example of such method is the -4- inclusion of location coordinates of the mobile device in the message sent to the receiving device. After comparison of the location coordinates with known communication booth location coordinates, the locking control system may determine which communication booth door the user is seeking to unlock. Location coordinates of a mobile device having a 5 positioning functionality (e.g. by using the Global Positioning System, GPS) can be automatically determined in the mobile device and inserted in the message. This may also ensure that the user actually is located at the communication booth to be opened.

In an embodiment, the message comprises a user identification code, e.g. to facilitate billing of the use of the communication booth to an account indicated beforehand by the user. 10 In an embodiment, when the locking control system unlocks the door, a timer is started to determine a use time of the booth. The user may have be provided with a limited or an unlimited use time of the booth.

In an embodiment, the locking control system is configured to lock the door at a predetermined time after start of the use time. After the locking control system has 15 determined that a valid access code has been provided, and the door of the communication booth has been unlocked, a predetermined time interval may be provided for the user to enter the booth and close the door again. Once in the booth, the user wishes to enjoy privacy, and this is provided when the locking control system locks the door again. This will prevent other people from entering the booth. When the opening of the door by the locking device from the 20 outside of the communication booth is controlled by the locking control system, and the opening of the door by the locking device from the inside of the communication booth is hand operated, the user can leave the booth at any time, while other people are prevented from entering the booth.

In an embodiment, the communication booth access system further comprises a 25 presence sensor associated with the booth, wherein the locking control system is configured to lock the door at a predetermined time after lapse of an allowed use time when the presence detector indicates no presence of a user in the booth. This feature will prevent, when no user is present in the booth, other people from entering the booth.

In an embodiment, the communication booth access system further comprises a 30 presence sensor and an alarm associated with the booth, wherein the locking control system is configured to set off the alarm after lapse of an allowed use time when the presence detector indicates a presence of a user in the booth. In this way, the rightful user is alerted that a standard time interval, or a time interval which was determined by a prepayment, has lapsed. The alarm will bring the user in the booth in an uncomfortable position, in particular 35 when the alarm is noticeable from the exterior of the booth, such that the user will be urged to leave the booth as soon as possible. The alarm may also make any telephone conversation difficult or impossible. The alarm may also be activated at another location to alert a booth -5- manager, who may then approach the booth to assess the situation and take proper measures.

In an embodiment, the communication booth access system further comprises a presence sensor and an alarm associated with the booth, wherein the locking control system 5 is configured to set off the alarm when the presence detector indicates a presence of a user in the booth while no valid access code has been received by the receiving device. The alarm will bring the person in the booth in an uncomfortable position, in particular when the alarm is noticeable from the exterior of the booth, such that the user will be urged to leave the booth as soon as possible. The alarm may also be activated at another location to alert a booth 10 manager, who may then approach the booth to assess the situation and take proper measures.

In an embodiment, the booth is provided with a reader/writer for communication with an IC chip card containing data representing a prepaid amount, and wherein the timer is started and stopped by the IC chip card communicating with the reader/writer to determine an 15 amount to be withdrawn from the IC chip card. If the booth is in a public place, in particular at a train station, an IC chip card already available for travelling by public transport can be used to gain easy access to the communication booth, where the time used can be paid for proportionally by checking in with the IC chip card when accessing the booth, and checking out with the IC chip card on leaving the booth.

20 In another aspect of the present invention, a communication booth, which is adapted for the communication booth access system of the present invention, is provided.

In an embodiment, the communication booth comprises a breakable structure close to the locking device, wherein in case of emergency a person from outside can break the structure and reach his hand through to open the door from the inside of the communication 25 booth. If for any reason the user of the communication booth, who is inside the communication booth, is unable to open the door to leave the communication booth, another person from outside the booth can help the user.

In an embodiment, the booth comprises sidewalls, and wherein at least part of at least one of the sidewalls and the door is transparent. This allows a visual inspection of the 30 conditions inside the booth from outside the booth.

In an embodiment, the booth is provided with a door-closing device, which may comprise a spring, forcing the door to its closed position. The door-closing device ensures that the door, if a person does not actuate it, will take its closed position such that the locking device may lock or unlock the door.

35 In an embodiment, the communication booth comprises heating and ventilating means to create a comfortable atmosphere inside the booth. The booth may further comprise a seat -6- for the user to take a comfortable position, and/of a shelf for the user to place items on, such as a communication device, a bag, a notepad, etc.

In another aspect of the present invention, there is provided a use of the communication booth according to the invention in a communication booth access system according to the 5 invention for making a telephone call through a radio network.

In a further aspect of the present invention, a method for accessing a communication booth comprising a door for accessing the booth is provided. The method comprises: providing an access code to a receiving device; checking the access code received by the receiving device; and, if the access code is validated, controlling a locking device for 10 unlocking the door, and if the access code is not validated, controlling the locking device for locking the door.

These and other aspects of the invention will be more readily appreciated as the same becomes better understood by reference to the following detailed description and considered in connection with the accompanying drawings in which like reference symbols designate like 15 parts.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 depicts a perspective and partly diagrammatic and schematic view of an 20 embodiment of a soundproof communication booth access system in accordance with the present invention.

FIG. 2 depicts a perspective and schematic view of an embodiment of a control unit of a communication booth.

FIG. 3 depicts a perspective and schematic view of a controllable locking device.

25

DETAILED DESCRIPTION OF EMBODIMENTS

For the following explanation, it is assumed that a user has acquired a personal OV Chip card (public transport IC chip card), or a mobile phone with personal NFC OV Chip card 30 functionality. The card contains payment data representing sufficient money on the card to make a transaction. Further it is assumed that a plurality of communication booths at various locations is exploited by an organisation. On the exploitation organisation’s website a description of the soundproof communication booth access system, its terms and conditions of usage, tariffs and user initiation procedure will be described.

35 Fig. 1 depicts a soundproof communication booth 20 having a soundproof door 24 which can be opened, closed, locked and unlocked (when in closed position). When the door is in an open position, it is urged to a closed position by a door-closing device, which is -7- illustrated by a spring 21. The booth 20 comprises a lighting device 26 for lighting the booth 20. A seat 22 is provided, as well as a heating device 23 under the seat. A shelf 27 is provided. The lighting device 26 and the heating device 23 can be switched on and off as desired by a booth manager, or by the booth managing system settings, as far as required by 5 exterior lighting and climate conditions.

The booth 20 may be located at a public place like a railway station, bus station, airport, restaurant, shopping centre, etc. The booth 20 may also be located in a public transport vehicle, such as a train, a tram, a metro, a bus, an airplane, a ship, etc.

For the following description reference is made to Figures 1,2 and 3. Standing before 10 a locked booth 20 with booth code e.g. 0021, a user may hold his OV Chip card 01 against an OV Chip card reader 28 mounted to the booth 20. The reader may be connected to a station or depot computer, hereafter called the station computer 29a. This can either be a local buffer, sending data only once a day to a Central Application 29b, or be directly connected to a Central Application 29b sending all digital messages real-time. The Central Application may 15 manage a plurality of booths 20.

The station computer 29a receives a “0021” reservation NFC request comprising a user ID from the user’s OV Chip card 01 and a time-stamp from the OV Chip card reader 28. The station computer checks (a) the OV Chip card 01 balance; (b) black lists for fraud, and (c) 20 whether the user has accidentally made also a reservation for another booth.

When the codes for access are all validated, the station computer 29a sends one or more signals to the communication unit 39 of a control unit 30 (locking control unit), so that the control unit 30: (a) may switch a presence detector 33 off; (b) change colour of display from RED indicator 35 to GREEN indicator 31; (c) start a display clock 36; (d) switch relay 37 25 to trigger an electromagnet 48 to open (pull in) an electronic lock 44 by the connecting axis 47 for a preset time e.g. 10 seconds.

In case of low temperatures (e.g. below 12 degrees Celsius), the control unit 30 switches on with relay 38 the heating device 23 with a temperature control with a preset value. In case of darkness, the control unit 30 switches on with relay 34 the lighting device 26. 30 Next, the user pulls the door 24 open with a fixed handle 41 and steps into the booth 20. The spring 21 closes the soundproof door behind the user and lets the door 24 rest against isolation material 46. Ventilation of the booth 20 is made possible by air vents 25. The lock 44 moves by a spring out in a space 45 (resting position, locked) after the relay 37 has cut off the current to the electromagnet 48 after a preset time, ensuring privacy for the user.

35 The user takes his own mobile phone 10 to call in private using the network coverage of 2G/3G or 4G operators in that area, or optionally via a soft client over Wi-Fi or another type -8- of network. The display clock 36 shows the time length of the session in minutes and seconds.

For comfort, the user can sit on the bench 22, and may put items on shelf 27. The user may load the battery of his mobile phone / laptop by using the AC power connector 50.

5 When the user wants to leave the booth 20, the user collects his belongings, opens the door 24 using handle 43 connected to, and unlocking the lock 44, and steps out of the booth 20. This might take place while the user is still talking in his mobile phone 10 in order to catch his train, in case of an emergency, or when the user has ended his phone call.

Stepping out of the door 24, the user watches the door close and lock again. The user 10 then holds his OV Chip card 01 again in front of the OV Chip card reader 28. The station computer 29a receives a (second) “0021” NFC request with the user ID from his OV Chip card and a time-stamp from the OV Chip card reader 28. The station computer 29a: a) Checks at which time, as evidenced by a previous time-stamp, the same OV Chip card has logged in to this booth 20; 15 b) Calculates the length of the occupancy (use time) of the booth 20; c) Calculates the amount of money that must be subtracted from the amount of money stored for the OV Chip card; d) May produce a billing line for a monthly invoice of the communication booth access system by the Central Application 29b; 20 e) Sends a signal to the control unit 30 to freeze the display to the use time e.g. 04:29 (so the user can make a note); switches the lights from GREEN indicator 31 to RED indicator 35; switches off the lighting and heating; may switch on the presence detector 33. After a preset time the display clock 36 switches to 00:00.

The station computer 29a may send all billing information in regular intervals to the 25 Central Application and may receive an update from a central blacklist of user ID’s barred from use of the soundproof communication booth access system.

In case of use of an anonymous (prepaid) OV Chip card mode the display clock 36 may alternate the display of the length of the use time with the remaining use time based on the actual amount of money stored in the memory of the OV Chip card 01. When the amount 30 has reached zero, the control unit 30 switches from GREEN indicator 31 to RED indicator 35 and activates the presence detector 33 and possibly an visual and/or audible alarm 38 after a preset time, e.g. 15 seconds, if by then a person is still detected by the presence detector 33 to be present in the booth 20.

Standing before a locked booth 20 with readable booth code 32 e.g. 0021, a user may 35 send with his mobile phone 10 a preset SMS (Short Message Service) script to open the booth: e.g. “start0021” to the number of the exploitation organisation. The SMS message is received by the Central Application 29b, managing a plurality of booths 20, comprising a user -9- ID from the user’s SIM card and a time-stamp from the SMS. The Central Application 29b checks (a) the Users balance; (b) black lists for fraud, and (c) whether the user has accidentally made also a reservation for another booth.

When the codes for access are all validated, the Central Application 29b sends one or 5 more signals to the communication unit 39 of a control unit 30, so that the control unit 30: (a) may switch a presence detector 33 off; (b) change colour of display from RED indicator 35 to GREEN indicator 31; (c) start a display clock 36; (d) switch relay 37 to trigger an electromagnet 48 to open an electronic lock 44 by the connecting axis 47 for a preset time e.g. 10 seconds.

10 In case of low temperatures (e.g. below 12 degrees Celsius), the control unit 30 switches on the heating device 23 with a temperature control with a preset value. In case of darkness, the control unit 30 switches on the lighting device 26.

Next, the user pulls the door 24 open with a fixed handle 41 and steps into the booth 20. The spring 21 closes the soundproof door behind the user and lets the door 24 rest 15 against isolation material 46. Ventilation of the booth 20 is made possible by air vents 25. The lock 44 closes electronically falling in a space 45 after the relay 37 has cut off the current to the electromagnet 48 after a preset time, ensuring privacy for the user.

The user takes his own mobile phone to call in private using the network coverage of 2G/3G or 4G operators in that area, or optionally via a soft client over Wi-Fi or another type of 20 network. The display clock 36 shows the time length of the session in minutes and seconds.

When the user wants to leave the booth 20, the user sends a SMS message “stop” to the organisation, collects his belongings, opens the door 24 using handle 43 connected to, 25 and unlocking the lock 44, and steps out of the booth 20.

Stepping out of the door 24, the user watches the door close and lock again. The Central Application 29b receives a (second) SMS request “stop” with the user SIM card and records the time-stamp. The Central Application 29b: a) Checks at which time, as evidenced by a previous time-stamp, the same SIM card has 30 logged in to this booth “0021 ”; b) Calculates the length of the occupancy (use time) of the booth; c) Calculates the amount of money that must be subtracted from the user balance; d) May produce a billing line for a monthly invoice of the communication booth access system by the central office application; 35 e) Sends a signal to the control unit 30 to freeze the display to the use time e.g. 04:29 (so the user can make a note); switches the lights from GREEN indicator 31 to RED indicator 35; -10- switches off the heating; may switch on the presence detector 33. After a preset time the display clock 36 switches to 00:00.

As explained above, a soundproof communication booth access system comprises a soundproof communication booth, which has a soundproof door for accessing the booth. The 5 system comprises a locking device for locking or unlocking the door; and a locking control system configured to control the locking device to lock or unlock the door. The locking control system comprises a receiving device for receiving an access code, and a validator for checking the access code received by the receiving device. If the validator validates the access code, the locking control system controls the locking device to unlock the door. If the 10 validator does not validate the access code, the locking control device controls the locking device to lock the door.

As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. Therefore, specific structural and 15 functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure. Further, the terms and phrases used herein are not intended to be limiting, but rather, to provide an understandable description of the invention.

20 The terms "a" or "an", as used herein, are defined as one or more than one. The term plurality, as used herein, is defined as two or more than two. The term another, as used herein, is defined as at least a second or more. The terms including and/or having, as used herein, are defined as comprising (i.e., open language, not excluding other elements or steps). Any reference signs in the claims should not be construed as limiting the scope of the 25 claims or the invention.

The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

The term coupled, as used herein, is defined as connected, although not necessarily directly, and not necessarily mechanically.

30 A single processor or other unit may fulfil the functions of several items recited in the claims. The processor may be a local or a remote processor.

The terms program, software application, and the like as used herein, are defined as a sequence of instructions designed for execution on a computer system. A program, computer program, or software application may include a subroutine, a function, a procedure, an object 35 method, an object implementation, an executable application, an applet, a servlet, a source code, an object code, a shared library/dynamic load library and/or other sequence of instructions designed for execution on a computer system.

1038635

Claims

An access system for a sound-insulated communication space, comprising: a sound-insulated communication space with a sound-insulated door to enter the space; a lock mechanism to lock and unlock the door; and a lock management system configured to operate the lock mechanism to close or unlock the door, the lock management system comprising: a receiving device to receive the access code; an assessment mechanism to validate the access code, wherein, if the assessment mechanism evaluates the access code positively, the lock management system instructs the lock mechanism via the control unit to unlock the door, and if the assessment is negative, the lock management system via the control unit instructs the lock mechanism to keep the door closed.

An access system for a sound isolated communication space according to claim 1, wherein the receiving device is configured to receive an electronic message J 20 with an access code.

An access system for a sound isolated communication space according to claim 2, wherein the message is a message generated by a user's mobile phone. 25

An access system for a sound isolated communication space, according to claim 2 or 3, wherein the space contains a readable space code or number and wherein the message contains this space code.

An access system for a sound isolated communication space, according to any one of the preceding claims, wherein the message contains a user identification code.

An access system for a sound isolated communication space according to any one of the preceding claims, wherein the space is equipped with a reader to read data from an IC 35 chip card including the user identification code, the reader being configured to generate the access code and send it to the receiving device with the identification code. 1038635 -12-

A sound-insulated communication space access system according to claim 6, wherein the reader is further configured to generate and transmit the code of the space to the receiving device. 5

An access system for a sound isolated communication space, according to any one of the preceding claims, wherein a clock is started to measure the usage time in the cell as soon as the lock management system unlocks the door via the control unit and the lock mechanism. 10

A sound-insulated communication room access system according to claim 8, wherein the lock management system is configured to close the door after a preset time after the start of the use of the room, to prevent unwanted persons from entering the room during the use. 15

A sound-insulated communication room access system according to claim 8, further comprising a presence sensor associated with the room, wherein the lock management system is configured to close the door after a preset time after the start of permitted use when the presence sensor 20 indicates that no person is present in the room.

11. A sound-insulated communication room access system according to claim 8, further comprising a presence sensor and an alarm associated with the room, wherein the lock management system is configured to trigger the alarm after a preset time when the presence sensor indicates that a person is present in the room, after the allowed user time has elapsed.

12. A sound-insulated communication space access system according to claim 8, further comprising a presence sensor and an alarm associated with the space, wherein the lock management system is configured to trigger the alarm after a preset time when the presence sensor indicates that a person is present in the room, while no valid access code has been received by the lock management system.

A sound-insulated communication space access system according to claim 8, wherein the space is provided with a reader / writer for communication with an IC chip card which contains data indicating an amount of prepaid money, and wherein a clock is started and stopped by the IC chip card, communicating with the reader / writer, to determine the amount of money that is debited from the IC chip card.

14. A sound isolated communication space adapted for the access system of the sound isolated communication space for each of the preceding claims.

A sound-insulated communication space according to claim 14, wherein with the door closed the communication space realizes a sound intensity reduction of at least 14 dB (A) in the audible frequency range of sound of 50-7,000 Hz from outside the space to inside and vice versa.

16. A sound-insulated communication space according to claim 14 or 15, wherein unlocking the door is controlled from outside by the lock management system which unlocks the lock through the control unit through which the user can open the door, and unlocking the door takes place manually with the door handle from the inside.

17. A sound-insulated communication space as claimed in claim 16, which comprises a removable structure near the lock, wherein in an emergency a person on the outside of the space can smash the structure to be able to manually open the door through the door. .

A sound-insulated communication space according to claims 14 to 17, wherein the space comprises side walls and at least a part of at least one of the side walls being transparent. 25

A sound-insulated communication space according to claims 14 to 18, wherein the space is provided with a door closing mechanism which pushes the door back from an open position to a closed state.

A sound-insulated communication space according to claim 19, wherein the door closing mechanism comprises a spring.

21. A sound-insulated communication space according to claims 14 to 20, wherein the space is provided with heating, lighting, ventilation means and a socket for charging a mobile device. -14-

A sound-insulated communication space according to claims 14 to 21, wherein the space comprises a seat.

A sound-insulated communication space according to claims 14 to 22, wherein the space comprises a shelf or small table.

The use of the access system for a sound-insulated communication space, according to any one of the preceding claims, for conducting a telephone conversation via a radio network. 10

A method for entering the door of a sound isolated communication space, the method comprising: Providing an access code to a receiving device; Validating the access code received by the receiving device; and if the access code is validated, instruct the lock mechanism to unlock the door, and if the access code is not validated, the lock mechanism must keep the door closed. 20 1038635