AU2018200088B2

AU2018200088B2 - Elevator systems and methods

Info

Publication number: AU2018200088B2
Application number: AU2018200088A
Authority: AU
Inventors: Barry Andrews
Original assignee: Romteck Australia Pty Ltd
Current assignee: Romteck Australia Pty Ltd
Priority date: 2017-01-04
Filing date: 2018-01-05
Publication date: 2022-12-15
Anticipated expiration: 2038-01-04
Also published as: WO2018127826A2; AU2018200088A1; AU2017100270A4

Abstract

In one preferred form of the present invention, there is provide a computer implemented elevator emergency telecommunications method comprising the automated process of: (a) using a communications controller to process emergency requests; the emergency requests originating from at least one elevator; (b) in response to one or more of the emergency requests, informing of a required emergency management action using a cellular transmitter; (c) retrieving location data from a location store; and (d) making location information from the location data available for the emergency management action; the location information concerning the location of each elevator or groups of elevators from which emergency requests originated. 1/6 1:1g.1 10 EMERGENCY INITIATE 14 60 122 60 3 000000 2 000000 000000 28 28 28 28- 16 ~16 ~16 20 E 61 ...16 18 26 26 26 <18 ->18 -x18

Description

1/6 1:1g.1 10

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ELEVATOR SYSTEMS AND METHODS FIELD OF THE INVENTION

[0001] The present invention relates to elevator systems and methods.

BACKGROUND To THE INVENTION

[0002] Elevator emergency telephone systems are typically used in commercial buildings. The present invention seeks to provide several systems and methods in relation to such elevator emergency telephone systems.

[0003] It is against this background and the problems and difficulties associated therewith that the inventor(s) has developed the present invention. The present invention may also find application in domestic elevator emergency telephone systems.

SUMMARY OF THE INVENTION

[0003A] In one aspect there is provided a communications controller for processing emergency requests, the controller comprising: a PSTN communications interface comprising a plurality of line connectors connected to elevator emergency telephone lines; a cellular communications interface comprising a cellular transmitter and a DTMF receiver; a battery power supply configured to provide backup power to the cellular communications interface; and a processer configured to: process data relating to an emergency call received via a line connecter of the PSTN communications interface from an elevator; generate an emergency SMS message based on the processed data; and cause the cellular communications interface to transmit the SMS from the communications controller to a remote emergency call centre, thereby connecting the emergency call to the emergency call centre, wherein the emergency SMS message comprises a call request, and wherein the communications controller is further configured to receive a DTMF request from the emergency call centre in response to said call request, wherein the communications controller is retrofitted to an existing distribution frame wiring of a direct wired connection from one or more elevator telephones to a public switched telephone network (PSTN).

[0003B] The communications controller may be configured to provide a gateway between a PSTN communications network associated with the elevator emergency telephone lines and a cellular communications network associated with the emergency call centre.

[0003C] The communications controller may further be configured to connect a call centre call received via the cellular communications interface to an elevator via a line connector of the PSTN communications interface.

1A

[0003D] The processor may further be configured to determine elevator location data based on the line connector that the emergency call is received on. The communications controller may further comprise a message generator configured to generate audio location messages for transmission via the cellular communications interface. The message generator may generate audio location messages based on the determined elevator location data, and by combining stored audio recordings. The generated audio location messages may be transmitted via the cellular communications interface in response to a received DTMF request.

[0003E] In another aspect there is provided a method for connecting an emergency call from an elevator telephone to a remote emergency call centre, wherein the elevator telephone is directly wired to a public switched telephone network (PSTN), the method comprising: processing data relating to an emergency call received via a line connecter of a PSTN communications interface from the elevator; identifying the elevator from which the emergency call originated; generating an emergency SMS message based on the processed data, wherein the emergency SMS message comprises a call request; transmitting the SMS from a communications controller retrofitted to an existing distribution frame wiring connecting the elevator telephone and the PSTN to the emergency call centre; receiving a DTMF request from the emergency call centre in response to said call request; and in response to the received DTMF request doing at least one of: generating and transmitting an audio location message to the emergency call centre; and connecting, via a line connector of a PSTN communications interface, a call centre call received via a cellular communications interface.

[0004] According to another aspect there is provided a computer-implemented elevator emergency telecommunications method comprising the automated process of: using a communications controller to process emergency requests; the emergency requests originating from at least one elevator; in response to one or more of the emergency requests, informing of a required emergency management action using a cellular transmitter; retrieving location data from a location store; and making location information from the location data available for the emergency management action; the location information concerning the location of each elevator or groups of elevators from which emergency requests originated.

[0005] Preferably the at least one elevator comprises a plurality of elevators and the method includes: (a) using a communications controller to process emergency requests; the emergency requests originating from the elevators; and (b) in response to each emergency request, informing of a required emergency management action using the cellular transmitter.

[0006] Preferably making the location information, from the location data, available for the emergency management action comprises providing one or more audio messages detailing the location of each elevator from which an emergency request originated.

[0007] Preferably making location information available for an emergency management action comprises providing an audio message detailing the location of each elevator from which emergency requests originated during a predetermined interval.

[0008] Preferably the method includes deleting audio messages in response to operator deletion requests.

[0009] Preferably the method includes recording the audio messages in the store of audio messages with each recorded message corresponding to an associated elevator.

[0010] Preferably the method includes, in response to DTMF tone requests from emergency operators, playing the audio messages detailing the location of each elevator from which the emergency requests originated.

[0011] Preferably the location information comprises the elevator number, the address of the building and the location of the elevator relative to the building.

[0012] Preferably the method includes ensuring that the cellular transmitter is able to wirelessly transmit in response to each emergency request with the use of a battery power supply backup during a power outage.

[0013] Preferably the battery power supply backup is provided to run for a period of 12 hours before the cellular transmitter is unable to function.

[0014] Preferably the method includes providing the communications controller with a plurality of line connectors; each line connector for connecting to a conventional PSTN elevator telephone line from each elevator.

[0015] Preferably the method includes connecting a telephone call made to the cellular transmitter through the communication controller to an elevator from which an emergency request has originated.

[0016] According to another aspect there is provided a computer-implemented elevator emergency telecommunications system comprising: a communications controller for processing emergency requests; the emergency requests originating from at least one elevator; a cellular transmitter for use in informing of a required emergency management action in response to one or more of the emergency requests; a location data provider for retrieving location data from a location store; and a location informer for making location information from the location data available for the emergency management action; the location information concerning the location of each elevator or groups of elevators from which emergency requests originated.

[0017] Preferably the at least one elevator comprises a plurality of elevators.

[0018] Preferably the location informer is configured to provide one or more audio messages detailing the location of each elevator from which the emergency requests originated.

[0019] Preferably the location informer is configured to provide one or more audio messages detailing the location of each elevator from which the emergency requests originated during a predetermined interval.

[0020] Preferably the system includes a remover for deleting audio messages in response to operator deletion requests.

[0021] Preferably the system includes a recorder for recording the audio messages in the store of audio messages, with each recorded message corresponding to an associated elevator.

[0022] Preferably the system includes a responder for responding to DTMF tone requests from emergency operators, the responder for playing the audio messages detailing the location of each elevator from which the emergency requests originated.

[0023] Preferably the location information comprises the elevator number, the address of the building and the location of the elevator relative to the building.

[0024] Preferably the system includes a battery power backup supply for allowing the cellular transmitter to wirelessly transmit in response to each emergency request during a power outage.

[0025] Preferably the battery power backup supply is provided to run for a period of at least 12 hours.

[0026] Preferably the communications controller includes a plurality of line connectors; each line connector for connecting to a conventional PSTN elevator telephone line from each elevator.

[0027] Preferably the communications controller is able to connect a telephone call made to the cellular transmitter through the communication controller to an elevator from which an emergency request has originated.

[0028] It is to be recognised that other aspects, preferred forms and advantages of the present invention will be apparent from the present specification including the detailed description, drawings and claims.

BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to facilitate a better understanding of the present invention, several preferred embodiments will now be described with reference to the accompanying drawings, in which:

Figures 1 to 6 provide several views of a method according to a first preferred embodiment of the present invention; and

Figure 7 provides a view of a system according to a second preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] It is to be appreciated that each of the embodiments is specifically described and that the present invention is not to be construed as being limited to any specific feature or element of any one of the embodiments. Neither is the present invention to be construed as being limited to any feature of a number of the embodiments or variations described in relation to the embodiments.

[0031] Referring to Figures 1 to 5 there is shown a computer-implemented elevator emergency telecommunications method 10. The method 10 accords with a first preferred embodiment of the present invention and is considered to provide several advantages and/or differences over existing systems.

[0032] At block 12, the method 10 includes using a communications controller 14 to process emergency requests 16, where the emergency requests 16 originate from at least one elevator 18.

[0033] In this embodiment, the at least one elevator 18 comprises a plurality of elevators 18 that form part of a monitored elevator system 20. The elevator system 20 is monitored by an emergency call centre 22 having a number of service operators 24. The emergency requests 16 comprise telephone call requests initiated using a respective telephone 26 located within each corresponding elevator 18.

[0034] The communications controller 14 advantageously comprises a single unit located at one location for communicating with each of the elevator telephones 26. The telephones 26 comprise standard PSTN telephones 26 and are connected by a standard distribution frame (intermediate or main) by standard PSTN lines 28 to the communications controller 14.

[0035] At block 30, after receiving an emergency request 16, the method 10 includes informing the call centre 22 of required emergency management action 32 using a cellular transmitter 34 that forms part of the communications controller 14. The call centre 22 is informed of a required emergency management action 32 by virtue of the message 36. The cellular transmitter 34 comprises a cellular modem. In this embodiment the cellular modem has a SIM card.

[0036] More specifically, in the embodiment, informing of the required emergency management action 32 comprises sending one or more mobile telephone SMS messages to the emergency call centre 22. In other embodiments informing of the required emergency management action 32 comprises sending information over mobile-data broadband (using the cellular transmitter 34).

[0037] Advantageously, in both cases the method 10 does not require the use of a PSTN telephone service traditionally associated with copper telephone lines. Retrofitting the communications controller 14 to an existing emergency elevator PSTN notification system is readily accommodated. The telephones 26 comprise conventional PSTN telephones connected by conventional PSTN lines via the distribution frame to the communications controller 14. Thus in the described sense, the method 10 advantageously comprises receiving the emergency requests 16 from conventional PSTN elevator telephones 26.

[0038] At block 38 the method 10 includes retrieving location data 40 from a location store 42. The location store 42 forms part of the communications controller 14. In other embodiments the location store 42 may be a remote location store.

[0039] At block 38 the method 10 includes making location information 44 from the location data available for the emergency management action 32by storing in an advisory store 46. With this embodiment the location information 44 concerns the location of each elevator 18. In other embodiments the location information 44 concerns groups of elevators (not shown) from which emergency requests 16 originated.

[0040] Embodiments in which the location information 44 concerns groups of elevators 48, may be particularly suited to large elevator installations. Generally however preferred embodiments have location information 44 that details the location of each elevator 18 uniquely.

[0041] In this embodiment, the location data 40 comprises elevator number, building address and elevator position data (relative to the building) for each elevator 18. The location data for a specific elevator might comprise elevator number 20, 16 Mount Street West Perth, Western Australia 6005, adjacent front entrance. In other embodiments making location information from the location data could comprise providing a location key or indicator from which further location data is manually or automatically determined.

[0042] At block 34, making the location information 44, available for the emergency management action 32 comprises providing one or more audio messages 48 detailing the location of each elevator 18 from which the emergency requests 16 originated.

[0043] In the method 10 the audio messages 48 are referenced in an advisory store 46 as a number of audio message references 50. In response to a request by an operator 24, a message generator 52 accesses the advisory store 46 to provide the audio messages 48.

[0044] In operation, the call centre service operator 24 makes a request for information via the communications controller 14. The audio messages 48 are generated by the message generator 52 and are provided to the call centre service operator 24 via the cellular transmitter 34.

[0045] The messages 48 inform the call centre service operator 24 of the location of each elevator 18 from which the emergency requests 16 originated. The time and date of the emergency request is also provided in the corresponding audio message 48.

[0046] The audio message references 50 are automatically removed from the advisory audio message store 46 after a predetermined interval has lapsed. In the present embodiment the predetermined interval is 12 hours. Thus if an emergency request has been made from an elevator 18, the method 10 will make the audio message 48 available to the call centre service operator 24 for a period of 12 hours before the corresponding reference 50 is deleted. The call centre service operator 24 may also manually remove the reference from the advisory store 46 before the 12 hour period has lapsed.

[0047] At block 54 the method 10 includes deleting audio message references 50 from the audio message store 46 in response to operator deletion requests. The requests are made by the call centre service operator 24 who telephones the communications controller 14 via the transmitter 34 and follows a series of prompts to obtain the audio messages 48. The call centre service operator 24 subsequently removes the audio messages 48 by making the removal requests.

[0048] At block 56 the method 10 includes recording the audio location data 40 in the location store. This is achieved by following voice prompts, and providing the audio location data 40 for an elevator 18 using a microphone (the microphone forming part of the communications controller 14). In this manner custom data can be readily entered.

[0049] At block 58, the method 10 includes playing audio messages 48 detailing the location of each elevator 18 from which the emergency requests 16 originated. Playing the audio messages 48 is performed in response to DTMF tone requests from an emergency operator.

[0050] For example after being informed of a required emergency management action 32, a call centre service operator 24 is able to call a telephone number associated with the cellular transmitter 34 and press DTMF tone '1'. The audio messages 48 are then played in response to the receipt of telephone key pad sequences (i.e.DTMF tones) made by an emergency operator'.. The audio messages 48 each contain the location information 44 in terms of an audio representation of the corresponding elevator number, the address of the building and the location of the elevator relative to the building. DTMF tones are otherwise known as dual tone multi frequency tones.

[0051] It is considered that the gradual rollout of various national fibre optic broadband networks may suffer from the possible disadvantage of the power supply being less secure than the presently existing copper line PSTN. Advantageously, the method 10 includes ensuring that the cellular transmitter 34 is able to wirelessly transmit in response to each emergency request 16 using a battery power supply 6(See Figure 1). With a high emergency call load, the battery power supply is able to run for a period of at least 12 hours (and preferably 24 or 48 hours) before operation of the method 10 fails. In this manner various embodiments will advantageously operate during a power outage. By using a cellular transmitter 34, several advantages are provided over known VOIP technology associated with national broadband networks such as the NBNTM in Australia.

[0052] At block 62, the method 10 includes connecting a telephone call from the call centre service operator 24 where the communication is made via the cellular transmitter 34 to the communication controller 14 to an elevator 18 from which an emergency request 16 originated. In the method 10, the communications controller 14 responds with a pre-recorded voice message that requests the call centre service operator 24 to enter the lift number they wish to contact. The call for service operator 24 then uses the number key pad on their phone to select the lift number in order to generate a ring tone request. In response to the request, the communications controller 14 subsequently routes the voice call to the associated elevator 18.

[0053] As shown in Figure 6, the communications controller 14 is provided with a plurality of line connectors 64. Each line connector 64 is provided for connecting a conventional PSTN based elevator telephone line from each elevator 18 in association with a distribution frame (main or intermediate).

[0054] The method 10 is considered to provide an approach in which the call centre service operator 24 is informed of emergency calls from elevators 18 using a cellular modem. Advantageously by simulating a PSTN service the existing emergency telephone equipment and wiring from each elevator 18, can be used in the method 10.

[0055] Location information 44 is referenced in an advisory store 46 with the call operator 24 being able to access the location information 44 upon a series of DTMF tone requests. The method does not require a single unit per elevator as the communications controller 14 can be advantageously retrofitted to the existing distribution frame wiring typically associated with a direct wired connection from the elevator telephones to the PSTN.

[0056] The call centre service operator 24 is able to determine the location of elevators by accessing the audio messages 48 as described above. The audio messages 48 comprise preprogramed digital voice messages that are collectively stored in the single communications controller 14. The operator receiving an emergency notification is able to perform an interrogation that is responded to by sending digital voice message that uniquely identifies the calling elevator telephone.

[0057] Thus it will be appreciated that there is provided a computer-implemented elevator emergency telecommunications method 10 in which there are provided a plurality of elevators 18. The method 10 includes: (a) using a communications controller 14 to process emergency requests

16; the emergency requests 16 originating from the elevators 18; and (b) in response to each emergency request 16, informing of required emergency management action 26 using a cellular transmitter 34; (c) retrieving location data 40 from a location store 42; and (d) making location information 44 from the location data 40 available for the emergency management action 26; the location information 44 concerning the location of each elevator 18 from which the emergency requests 16 originated. In this embodiment informing of required emergency management action 26 comprises sending an SMS or email to an operator requesting that the operator call a number for retrieving details of the emergency requests 16 and the location information 44.

[0058] Referring to Figure 7 there is shown a computer-implemented elevator emergency telecommunications system 66 according to a further preferred embodiment of the present invention. The system 66 comprises a communications controller 68 for processing emergency requests 70 originating from at least one elevator 72. A cellular transmitter 74 is provided for use in informing of required emergency management action 76 in response to one or more of the emergency requests 70.

[0059] A location data provider 78 is provided for retrieving location data 80 from a location store 82. A location informer 84 is provided for making location information 86 from the location data available for the emergency management action 76 with the location information 86 concerning the location of each elevator from which emergency requests 70 originated. The location information 86 comprises the elevator number, the address of the building and the location of the elevator relative to the building. The location information in the system 66 comprises a store of audio messages 88.

[0060] The location informer 84 is configured to provide the audio messages 88 detailing the location of each elevator 72 from which the emergency requests 70 originated during a predetermined interval.

[0061] The system 66 includes a remover 90 for deleting audio messages in response to operator deletion requests. A recorder 92 is provided for recording the audio messages in a store of audio messages 94, with each recorded message corresponding to an associated elevator 72.

[0062] A responder 96 is provided for responding to DTMF tone requests from emergency operators. The responder 96 is configured for playing the audio messages 88 detailing the location of each elevator 72 from which the emergency requests 70 originated.

[0063] A battery power backup supply 98 is provided for ensuring that the cellular transmitter 74 is able to wirelessly transmit in response to each emergency request 70. The battery power backup supply 98 is provided to run for a period of 12 hours before the system 66 is unable to function (assuming an average load).

[0064] The communications controller 68 includes a plurality of line connectors 100. Each line connector 100 is provided for connecting to a conventional PSTN elevator telephone line from each elevator 72.

[0065] The communications controller 68is able to connect a telephone call via the cellular transmitter 74 to an elevator 74 from which an emergency request 70 originated. This is achieved by following DTMF tone requests.

[0066] In a further example, four lifts all share the one cellular modem. The operator receives an emergency call from one of the lifts but does not know which one. In this case the operator uses their telephone key pad to send a predetermined sequence of numbers and/or symbols e.g. #1.

[0067] Each key press sends DTMF tones to the cellular modem which is then received by the communications controller. The communications controller includes a DTMF receiver that decodes these tones and plays the relevant voice message that identifies the lift from where the call originated. In this embodiment, the controller knows which lift since it knows which one of the four PSTN lines is active. From the voice message the operator can identify and record from which lift the call originates.

[0068] If the caller or operator should hang up, or the call is lost for some reason, the operator can regain communications with the previous caller by calling the cellular number associated with the communications controller. The communications controller will answer the call and use a voice message to ask the operator to enter the number of the lift they wish to connect to (i.e. one to four) the operator then presses the relevant sequence of numbers and or symbols on their telephone key pad e.g. #1 for lift one, #2 for lift two etc. The communications controller then connects the operator to the selected lift.

[0069] In terms of a number of advantages of the preferred embodiments described, it will be appreciated that several of the embodiments described provide a Lift Emergency Telephone

Service that does not specifically require the use of a PSTN telephone service traditionally associated with copper telephone lines.

[0070] With PSTN telephone technology the telephone is typically connected via an umbilical cable from the lift to the Main Distribution Frame (MDF) and optionally via an Intermediate Distribution Frame (IDF). This umbilical also contains cables to facilitate power for the lift lighting, the lift controls, position sensors, floor feedback indicator, video monitoring and other services.

[0071] As would be apparent, the systems and methods of the embodiments will advantageously operate during a power outage. This is considered to be distinguished, among other things from digital voice technology that operates over conventional broadband networks (i.e. voice over IP technology).

[0072] Among other configurations, by providing the preferred systems and embodiments that convert a call which would otherwise use a PSTN service to one that uses a cellular telephone service, it is possible to provide embodiments that appear to be a regular PSTN service as far as the elevator emergency telephone is concerned.

[0073] As described various systems and methods convert a call to a cellular based one by using a cellular modem. By simulating a PSTN service the existing Emergency Telephone equipment and wiring etc. can be used without substantial modifications. Installation occurs by removing the existing PSTN connection and wiring it directly to a preferred unit.

[0074] In circumstances where there are multiple lifts, and hence multiple Emergency Telephones, in a building, several preferred embodiments do not specially require a single unit per lift. These preferred embodiments allow a number of lifts to be connected to a single cellular modem as described in relation to the embodiment of Figure 1.

[0075] When a call is made from an Emergency Lift this is generally to a Call Service Provider. When the call is received, the Call Service Provider is able to determine the location of the lift by decoding caller line identification data. When multiple Emergency Phones are connected to a single cellular modem it is necessary to identify from which lift the call originated. Advantageously preferred embodiments are able to determine from which lift Telephone the call originated using a respective pre-programmed digital voice message that is included in the unit that identifies the location of the lift from which the call originated to the Call Service Provider.

[0076] The CLI is used to indicate to the Call Service provider that multiple Emergency Lift Telephones are connected to the one cellular modem (i.e. from either manual or electronic records). Advantageously the operator taking the call is able to interrogate the unit with the unit responding by sending the digital voice message that uniquely identifies the calling Telephone.

[0077] The preferred method of interrogation is for the operator to use the number key pad on their telephone to send DTMF tones e.g. #1, that will be decoded by the unit. Since the unit knows which telephone originated the call the appropriate voice message can be played. The interrogation can be initiated at any time the call is active.

[0078] The Call Centre is also advantageously able to call back to a specific lift that they have previously been in contact with. In which case the operator will ring the cellular phone number associated with the group of lifts. The unit answers the call with a pre-recorded voice message that requests the operator to enter the lift number they wish to contact. The operator will use the number key pad on their phone to generate a ring tone on the required telephone and subsequently route the voice call to the selected telephone.

[0079] As would be apparent, various alterations and equivalent forms may be provided without departing from the spirit and scope of the present invention. This includes modifications within the scope of the appended claims along with all modifications, alternative constructions and equivalents.

[0080] The systems and methods are computer implemented and automated. The computer implementations include the use of electronics components that provide processing of signals The use of microprocessors and computer memory is preferred with possibly various input and output interfaces provided by the system.

[0081] The computer data information may be provided in the form of encoded data instructions, data signals, data structures, program logic for server side operation, program logic for client side operation. Devices could be provided in distributed systems.

[0082] It is to be appreciated that systems, components, facilities, interfaces and so forth can be provided in several forms. Systems, components, facilities, interfaces and so forth may be provided as hardware, software or a combination thereof. The present invention may be embodied as an electronics device, computer readable memory, a personal computer and distributed computing environments.

[0083] In addition the present invention may be embodied as: a number of computer executable operations; a number of computer executable components; a set of process operations; a set of systems, facilities or components; a computer readable medium having stored thereon computer executable instructions for performing computer implemented methods and/or providing computer implemented systems; and so forth. In the case of computer executable instructions they preferably encode the systems, components and facilities described herein. For example a computer-readable medium may be encoded with one or more facilities configured to run an application configured to carry out a number of operations forming at least part of the present arrangements. Computer readable mediums preferably participate in the provision of computer executable instructions to one or more processors of one or more computing devices.

[0084] Computer executable instructions are preferably executed by one or more computing devices to cause the one or more computing devices to operate as desired. Preferred data structures are preferably stored on a computer readable medium. The computer executable instructions may form part of an operating system of a computer device for performing at least part of the preferred arrangements. One or more computing devices may preferably implement the preferred arrangements.

[0085] The term computer is to be understood as including all forms of computing device including electronics devices and distributed computing systems.

[0086] Components, systems and tasks may comprise a process involving the provision of executable instructions to perform a process or the execution of executable instructions within say a processor. Applications or other executable instructions may perform method operations in different orders to achieve similar results. It is to be appreciated that the blocks of systems and methods described may be embodied in any suitable arrangement and in any suited order of operation. Computing facilities, modules, interfaces and the like may be provided in distinct, separate, joined, nested or other forms and arrangements. Methods will be apparent from systems described herein and systems will be apparent from methods described herein.

[0087] There is no intention to limit the present invention to the specific embodiments shown in the drawings. The present invention is to be construed beneficially to the applicant and the invention given its full scope.

[0088] In the present specification, the presence of particular features does not preclude the existence of further features. The words 'comprising', 'including', 'or' and 'having' are to be construed in an inclusive rather than an exclusive sense.

[0089] It is to be recognised that any discussion in the present specification is intended to explain the context of the present invention. It is not to be taken as an admission that the material discussed formed part of the prior art base or relevant general knowledge in any particular country or region.

Claims

1. A communications controller for processing emergency requests, the controller comprising:

a PSTN communications interface comprising a plurality of line connectors connected to elevator emergency telephone lines;

a cellular communications interface comprising a cellular transmitter and a DTMF receiver;

a battery power supply configured to provide backup power to the cellular communications interface; and

a processer configured to:

process data relating to an emergency call received via a line connecter of the PSTN communications interface from an elevator;

generate an emergency SMS message based on the processed data; and

cause the cellular communications interface to transmit the SMS from the communications controller to a remote emergency call centre,

thereby connecting the emergency call to the emergency call centre,

wherein the emergency SMS message comprises a call request, and wherein the communications controller is further configured to receive a DTMF request from the emergency call centre in response to said call request,

wherein the communications controller is retrofitted to an existing distribution frame wiring of a direct wired connection from one or more elevator telephones to a public switched telephone network (PSTN).

2. The communications controller of claim 1, wherein the communications controller is configured to provide a gateway between a PSTN communications network associated with the elevator emergency telephone lines and a cellular communications network associated with the emergency call centre.

3. The communications controller of claim 1 or claim 2, wherein the processor is further configured to identify the elevator from which the emergency call originated and to determine elevator location data for the elevator based on the line connector that the emergency call is received on.

4. The communications controller of claim 3, further comprising a message generator configured to generate audio location messages for transmission via the cellular communications interface.

5. The communications controller of claim 4, wherein the message generator generates audio location messages based on the determined elevator location data, and by combining stored audio recordings.

6. The communications controller of claim 4 or claim 5, wherein the generated audio location messages are transmitted via the cellular communications interface in response to the received DTMF request.

7. The communications controller of any one of claims 3 to 6, wherein the communications controller is further configured to connect a call centre call received via the cellular communications interface to an elevator via a line connector of the PSTN communications interface in response to the received DTMF request selecting the identified elevator.

8. A method for connecting an emergency call from an elevator telephone to a remote emergency call centre, wherein the elevator telephone is directly wired to a public switched telephone network (PSTN), the method comprising:

processing data relating to an emergency call received via a line connecter of a PSTN communications interface from the elevator;

identifying the elevator from which the emergency call originated;

generating an emergency SMS message based on the processed data, wherein the emergency SMS message comprises a call request;

transmitting the SMS from a communications controller retrofitted to an existing distribution frame wiring connecting the elevator telephone and the PSTN to the emergency call centre;

receiving a DTMF request from the emergency call centre in response to said call request; and

in response to the received DTMF request doing at least one of:

generating and transmitting an audio location message to the emergency call centre; and

connecting, via a line connector of a PSTN communications interface, a call centre call received via a cellular communications interface.