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WO2009039576A1 - Système, appareil et procédé de communication - Google Patents

Système, appareil et procédé de communication Download PDF

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Publication number
WO2009039576A1
WO2009039576A1 PCT/AU2008/001426 AU2008001426W WO2009039576A1 WO 2009039576 A1 WO2009039576 A1 WO 2009039576A1 AU 2008001426 W AU2008001426 W AU 2008001426W WO 2009039576 A1 WO2009039576 A1 WO 2009039576A1
Authority
WO
WIPO (PCT)
Prior art keywords
telephony device
call
telephone
telecommunications
interface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/AU2008/001426
Other languages
English (en)
Inventor
Antonio Cantoni
Hooi Lit Ng
John Frank Siliquini
Kent Gibson
Kevin Alston Fynn
Stephan Bettermann
Steven Antony Ivandich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THEBUZZ CORP Pty Ltd
Original Assignee
THEBUZZ CORP Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2007905239A external-priority patent/AU2007905239A0/en
Application filed by THEBUZZ CORP Pty Ltd filed Critical THEBUZZ CORP Pty Ltd
Publication of WO2009039576A1 publication Critical patent/WO2009039576A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/42314—Systems providing special services or facilities to subscribers in private branch exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
    • H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/1225—Details of core network interconnection arrangements
    • H04M7/123—Details of core network interconnection arrangements where the packet-switched network is an Internet Protocol Multimedia System-type network

Definitions

  • This invention relates to a system, apparatus and method for establishing telephone calls between telephony devices, for example, using a combination of Public Switched Telephone Network and Voice over Internet Protocol technologies.
  • VoIP Voice over Internet Protocol
  • VoIP Voice over Internet Protocol
  • a source telephony device and a destination telephony device over a telecommunications network, the method comprising:
  • a private branch telephony device servicing a plurality of source telephony devices, the said interface interfacing with the private branch telephony device via branch telephone lines, and a telecommunications network providing at least two telephone lines for the private branch telephony device,
  • the method further comprises detecting an off-hook condition on the said branch telephone line of the private branch telephony device in response to the initiation of a telephone call at the source telephony device.
  • the method further comprises capturing call data inputted at the source telephony device to initiate the telephone call.
  • the method further comprises transmitting the call data inputted at the source telephony device to a call server using the available telecommunications channel to thereby establish a telecommunications call leg prior to bridging the said one telephone line and the said branch telephone line of the private branch telephony device.
  • routing communication between the source telephony device and the destination telephony device comprises establishing a destination call leg from the call server to the destination telephony device using the call data transmitted on the available telecommunications channel.
  • routing communication between the source telephony device and the destination telephony device further comprises bridging the telecommunications call leg and the destination call leg.
  • the method comprises, in addition to using the available telecommunications channel to transmit the call data inputted at the source telephony device, transmitting the call data to the call server on the telecommunications channel via at least one media gateway.
  • accessing an available telecommunications channel on one of said at least two telephone lines comprises accessing an existing free telecommunications channel.
  • accessing an available telecommunications channel on one of said at least two telephone lines comprises establishing a new free telecommunications channel.
  • the method further comprises providing the private branch telephony device as a private branch telephone exchange.
  • the method further comprises detecting an on-hook condition on said branch telephone line in response to termination of the telephone call, and terminating the destination call leg to terminate communication between the source telephony device and the destination telephony device.
  • the interface is operable to access an available telecommunications channel on one of said at least two telephone lines and to bridge the one telephone line and a branch telephone line of the private branch telephony device, and
  • the call server is operable to route communication between the source telephony device and the destination telephony device.
  • the interface is operable to detect an off-hook condition on the said branch telephone line of the private branch telephony device in response to the initiation of a telephone call at the source telephony device.
  • the interface is operable to transmit the call data inputted at the source telephony device to the call server using the available telecommunications channel to thereby establish a telecommunications call leg, prior to bridging the said one telephone line and the said branch telephone line of the private branch telephony device.
  • the call server is operable to establish a destination call leg from the call server to the destination telephony device using the call data transmitted on the available communications channel.
  • the call server is operable to bridge the telecommunications call leg and the destination call leg.
  • the call server is operable to receive call data on the telecommunications channel via at least one media gateway.
  • the interface is operable to access an available telecommunications channel on one of said at least two telephone lines by accessing an existing free telecommunications channel.
  • the interface is operable to access an available telecommunications channel on one of said at least two telephone lines by establishing a new free telecommunications channel.
  • the private branch telephony device comprises a private branch telephone exchange.
  • an interface for a telecommunications system for establishing communication between a source telephony device and a destination telephony device over a telecommunications network, wherein
  • the interface is operable to:
  • a private branch telephony device servicing a plurality of source telephony devices, the said interface interfacing with the private branch telephony device via branch telephone lines, and the telecommunications network which provides at least two telephone lines for the private branch telephony device, access an available telecommunications channel on one of said at least two telephone lines, and
  • the interface is operable to detect an off-hook condition on the said branch telephone line of the private branch telephony device in response to the initiation of a telephone call at the source telephony device.
  • the interface is operable to capture call data inputted at the source telephony device to initiate the telephone call.
  • the interface is operable to transmit the call data inputted at the source telephony device to a call server using the available telecommunications channel to thereby establish a telecommunications call leg, prior to bridging the said one telephone line and the said branch telephone line of the private branch telephony device.
  • the interface is operable to access an available telecommunications channel on one of said at least two telephone lines by accessing an existing free telecommunications channel.
  • the interface is operable to access an available telecommunications channel on one of said at least two telephone lines by establishing a new free telecommunications channel.
  • the present invention provides a method, system and apparatus whereby users that are not necessarily directly connected to the Internet (and possibly connected via the PSTN only), may more simply, reliably and with reduced steps, use, for example, VoIP technology in order to reduce call tariffs than would otherwise have been the case if the PSTN were used directly.
  • the present invention may additionally (or alternatively) be used to provide a telephony service that is of higher quality than existing VoIP services and/or provide a telephony service that has superior reliability features than existing VoIP services.
  • FIG 1 schematically illustrates an example of an existing telephone communication system arrangement where a Private Branch Exchange (PBX) is connected to four PSTN lines;
  • PBX Private Branch Exchange
  • FIG. 2 schematically illustrates the architecture and system components of a telephone communication system in accordance with an aspect of the present invention
  • Figure 3 schematically illustrates an embodiment of a configuration of the PTID apparatus, employed in the present invention, interfacing between the exiting PBX source telephony device and the PSTN shown in Figure 1 ;
  • Figure 4 schematically illustrates an embodiment of the resulting end-to-end communications between the source and destination telephony devices resulting from the use of the present invention.
  • the term 'telephony device' is used herein to describe any device or apparatus that communicates within telephony environments. Examples include fixed landline phones, Private Branch (telephony) Exchanges (PBX), cellular radio phones, cordless phones, internet phones or any other such devices.
  • PBX Private Branch
  • PBX Private Branch
  • cellular radio phones cellular radio phones
  • cordless phones cordless phones
  • internet phones internet phones or any other such devices.
  • PSTN line' is used herein to describe any type of analogue line or Integrated Services Digital Network (ISDN) channel that is used to make telephone calls via the PSTN.
  • ISDN Integrated Services Digital Network
  • the term 'telephone service provider' is used herein to describe any service provider of telephone termination services and includes traditional PSTN telecommunication companies and also includes VoIP service operators or providers.
  • SMB Small and Medium size Businesses
  • PSTN line connections to support telephony services amongst its employee staff.
  • An example of an existing arrangement that makes use of four PSTN lines and a Private Branch Exchange (PBX) is depicted in Figure 1.
  • the four PSTN lines 1 provide the (source) telephony devices 2 (which may be in the form of telephones) with telephone access to the PSTN 3.
  • the telephones 2 are connected to the PBX 4 via extension telephone lines 5.
  • PBX 4 controls the access of the telephones 2 to the PSTN 3.
  • the present invention may be used in the types of environment depicted in Figure 1.
  • FIG 2 illustrates an embodiment of the architecture and system components used in the present invention.
  • the telephone communication system 10 illustrated in Figure 2 comprises a call server 12, a multiline PSTN Telephony Interface Device (hereon referred to as PTID) 14, a branch telephony device which may be provided as a PBX system 4 and two media gateways 18 and 20.
  • PTID PSTN Telephony Interface Device
  • PBX media gateways
  • a PTID 14 is hardware or software, or a combination of hardware and software components, that interfaces between the source telephony device (for example a PBX 4,) and the PSTN 3, so as to operatively couple the PBX 4 and the PSTN 3. This is shown in Figure 3.
  • the interfacing of the PTID 14 with the PBX 4, or branch telephony device, and the PSTN 3 may be by any suitable means.
  • the PTID 14 may interface with the branch telephony device (PBX 4) via branch telephone lines (PBX lines 15).
  • the server 12 and the PTID 14 respectively comprise functional modules to perform the functions described herein.
  • the PTID 14 is used in the establishing and maintaining call connections initiated by the telephony devices.
  • the PTID 14 can establish and maintain multiple call connections for the telephony devices at the same time. This means that the present invention allows multiple calls on the telephony devices to be made simultaneously to multiple and unique call destinations.
  • the PTID 14 interfaces to the source telephony devices 2, via the PBX 4.
  • the PTID 14 is functional to detect, for example, the DTMF tones transmitted by a source telephony device 2, and to record in memory information inputted by a user of the source telephony device 2.
  • the information inputted by the user at a source telephony device 2 relates to the phone number of the destination telephony device 24 with which the user intends to establish a telephone communication.
  • the PTID 14 also interfaces to the PSTN 3 and is functional to establish regular telephone communication channels through the PSTN 3 to other telephony devices.
  • the PTID 14 is also functional to assist in the establishment of communications channel(s) between itself and the call server 12. This communications channel will be referred to as the PTID/Call Server Communications Channel ("PCSCC").
  • PCSCC PTID/Call Server Communications Channel
  • the PTID 14 is able to transmit and receive call information, via the PCSCC, to and from the call server 12.
  • the PTID 14 is able to transmit and receive such call information, for example, via the transmission or reception of DTMF tones or via modem data communications.
  • this is achieved by transmitting from the PTID 14 to the call server 12 the details of the phone number of the destination telephony device 24 with which the user, at the source telephony device 2, requires to establish a telephony communication.
  • the call server 12 uses this information and assists in establishing telephone communications between the source telephony device 2 and a destination telephony device 24.
  • the PCSCC is also used to support the end-to-end telephone communications between the source telephony device 2 and destination telephony devices 24.
  • An existing PCSCC is referred to as an active PCSCC if it is currently supporting an end-to-end communication between a source telephony device
  • An existing PCSCC is referred to as a free PCSCC, or a PCSCC that is available, if it is currently not supporting an end-to-end communication between a source telephony device 2 and a destination telephony device 24.
  • the PTID 14 may also have operative features that detect calls to and from local devices, i.e. other telephony devices, including a branch telephone or source telephone, in order to allow the source telephony device 2 to operate as it normally would.
  • the call server 12 under control of software, co-ordinates the establishment of telephone communications between telephony devices.
  • the call server 12 maintains a database which contains information regarding current call costs associated with multiple telephone service providers (including VoIP service providers).
  • the call server 12 also maintains a database relating to the quality and/or availability of the voice service being offered by telephone service providers (for example, VoIP service providers). This information is used to establish optimum service operating behaviour, for example, by choosing which telephone service provider to use for establishing call legs so as to minimise call costs or by choosing which telephone service provider to use for establishing call legs so as to maximise call quality.
  • the call server 12 can also keep databases storing additional information such as customer preferences related to calls that allow it to make decisions about setting up calls, for example, a preference to minimise call costs or a preference to maximise call quality.
  • the call server 12 is also functional to assist in the establishment of PCSCCs with the PTID 14.
  • the call server 12 is also functional to receive call details from the PTID 14, such as the phone number of the destination telephony device 24, via an established PCSCC or from the PTID 14 via the Internet.
  • After receiving call details from the PTID 14 (such as the phone number of the source telephony device 2), it is the function of the call server 12 to facilitate the end-to-end telephone communications establishment between the source telephony device 2 and the destination telephony device 24. This can proceed in a number of ways, depending on the preference of the user of this system.
  • the call could proceed at least in the following way:
  • the call server 12 initiates a call between itself and the subsequently acquired destination telephony device 24 using a specified telephone service provider.
  • the call server 12 is then functional to "bridge" the call leg 26 to the PTID 14 (using the previously established PCSCC) with the call leg 28 established to the destination telephony device 24, thereby creating end-to-end telephony communications between the source telephony device 2 and destination telephony device 24.
  • the "bridging" of call legs 26 and 28 in this way (between the source telephony device 2 and the destination telephony device24) enables the voice call between source and destination to be perceived as being direct.
  • the call server 12 under control of software, is operable to establish or tear down call legs as instructed by the PTID 14.
  • Phone calls made by the call server 12 can be via circuit switched network (e.g. the Public Switched Telephone Network (PSTN) 3) or they can be via the Internet (e.g. using Voice over Internet Protocol (VoIP) technology) or a combination of these and other technologies.
  • PSTN Public Switched Telephone Network
  • VoIP Voice over Internet Protocol
  • IP Internet Protocol
  • VoIP Session Initiation Protocol
  • H.323 Voice over Internet Protocol
  • DID Direct Inward Dialling
  • the PTID system supports the following interfaces:
  • N PSTN lines 1 The individual lines 1 are referenced as the f h PSTN line where 1 ⁇ i ⁇ N.
  • the PSTN lines 1 interface to the PSTN exchange 3.
  • the individual lines 5 are referenced as the f h PBX line where 1 ⁇ i ⁇ N.
  • the PBX lines 15 interface to the PBX 4 and the PTID 14 acts as the PSTN exchange for the PBX 4.
  • the destination telephony device 24 may be, for example, a fixed landline phone or a mobile (i.e. cellular) phone. It is assumed that the user of the source telephony device 2 has a PTID 14 suitably interfaced between the source telephony device 2 (typically via a PBX 4) and the PSTN 3.
  • Step 1 To make a telephone call, the user at the source telephony device 2 lifts the handset (or equivalent action) and dials the destination phone number in the usual way.
  • the PBX 4 detects this condition by detection of the off-hook condition of the source telephony device and proceeds to go off-hook on one of the free PBX lines 15 (say the f h line).
  • the PTID 14 is operable to detect the off-hook condition on the
  • the PTID 14 captures the call data inputted by the user, i.e. the DTMF digits dialled by the user on the I th PBX line 15, and records into memory the destination telephony device 24 phone number, N d dialled by the user at the source telephony device 2.
  • the PTID 14 will recognise if the number being dialled is not a bypass number.
  • Bypass numbers may include emergency (e.g. 000, 911 , etc) and other numbers such as, for example, free-call and local charge rate numbers (which may commence with digits such as 13x and 1800 ). If the number N d dialled is not a bypass number, the procedure continues from Step 3 below.
  • the PTID 14 seizes an unused /' 7 PSTN line 1 , transmits on that f PSTN line 1 the DTMF tones representing the digits already dialled by the user, then bridges the f h PBX line 15 and the/" PSTN line 1.
  • Step 3 If there is an existing free PCSCC (channel) on some /c" 7 PSTN line 1 , then the PTID 4 transfers the number N d being dialled to the call server 12 via DTMF tones on that PCSCC. This expedites the transfer of the number N d being dialled to the call server 12. If there is no existing free PCSCC (channel) then the PTID 4 initiates the process of establishing a new free PCSCC, i.e. a new available PCSCC to the call server 12. The establishment of new PCSCCs can be carried out, for example, in a way described in the section later herein titled Establishing a PCSCC .
  • the PTID 14 transfers the number N d being dialled to the call server 12 via DTMF tones on the /c" 1 PSTN line 1. It may also be possible to pass the number N d being dialled to the call server via other means, such as using the Internet and the Internet Protocol. Proceed to Step 4.
  • Step 4 Once the transfer of the number N d to the call server 12 is completed, the PTID 14 bridges the k" 1 PSTN line 1 with the /" PBX line 15 thereby connecting the user to the lt b PSTN line 1. This step facilitates the end-to-end telephone communications establishment between the source telephony device and the destination telephony device 24.
  • Step 5 When the call server 12 receives the number N d from the PTID 14 on a free PCSCC, or otherwise, the call server 12, based on the value of the number N d and any user profile information, will nominate a telephone service provider and proceed to establish the call to the telephone number N d of the destination telephony device 24 using the selected telephone service provider. This call establishes the destination call leg 28. The Call Server then bridges the PCSCC call leg 26 (which terminates on the U h PSTN line 1 at the PTID 14) with the destination call leg 28. In this way the source telephony device 2 and destination telephony device 24 perceive the call to be direct.
  • Step 6 When the on-hook is detected on the f h PBX line 15 by the PTID 14, the PTID 14 transmits a DTMF sequence on the associated active PCSCC on the fd h PSTN line 1 that allows the call server to terminate the destination call leg 24 and generate a call detail record (CDR) for this call.
  • the DTMF sequence transmitted by the PTID 14 on the relevant active PCSCC could, for example, be either the "BBB*" or the "CCC * " DTMF sequences.
  • the PCSCC channel at this stage may or may not be terminated and could be used for subsequent new calls initiated by a source telephony device 2.
  • the procedure for keeping the PCSCC open or alternatively terminating this channel is described in the section Semi-Permanent PCSCC.
  • a free U h PBX line 15 is bridged to the f h PSTN line 1 , thereby transferring ringing and any Call ID (CID) information to the PBX 4.
  • the incoming call is then processed by the PBX 4 in the usual way.
  • Step L At the PTID 14:
  • the PTID 14 dials the call server 12 using NCS 9 on a seized f PSTN line 1 thereby requesting the call server 12 to call back the PTID 14 to facilitate the establishment of a PCSCC. Proceed to Step 2.
  • Step 2 At the Call Server 12:
  • the call server 12 Upon detecting an incoming call from the PTID 14 on NCS 3 , the call server 12 records the Caller ID (CID) of the source telephony device 2 into N 8 and signals "busy" (i.e. does not answer the call) and terminates the call from the PTID 14. If N s corresponds to an authorised user then the call server 12, based on the value of N s and any user profile information, will nominate a telephone service provider that will use to establish the PCSCC to the initiating PTID 14. The call server 12 will then call back the PTID 14 by making a call to the telephone number N 3 of the source telephony device 2 using the selected telephone service provider. This facilitates the establishment of the PCSCC. Proceed to
  • the PTID 14 that initiated the establishment of the PCSCC waits for "busy” or timeout on the/" PSTN line 1. After this, the PTID 14 then goes on-hook on the f h PSTN line 1 and waits for call server call back.
  • Step L At the PTID 14:
  • the PTID 14 notifies the call server 12 to initiate the establishment of a call back to the PTID 14 to facilitate the establishment of a PCSCC via the Internet and the Internet Protocol, whereby the PTID 14 signals via the Internet to the call server 12 the value of N 3 , N 3 being the telephone number of the PTID (i.e. the source telephony device telephone number) requesting the call back. Proceed to Step 2.
  • Step 2 At the Call Server 12:
  • N s that was received from the PTID 14 via the Internet corresponds to an authorised user
  • the call server 12 based on the value of N 3 and any user profile information, will nominate a telephone service provider that will use to establish the PCSCC to the initiating PTID 14.
  • the call server 12 will then call back the PTID 14 by making a call to the telephone number N 3 of the source telephony device using the selected telephone service provider. This facilitates the establishment of the PCSCC. Proceed to Step 3.
  • Step 3 At the PTID: The PTID 14 that initiated the establishment of the PCSCC waits for call server 12 call back. Proceed to Step VERIFY.
  • Step VERIFY At the PTID 14:
  • the call server 12 call back can occur on any k? h PSTN line 1 at the
  • the call server 12 call back call is detected and verified via the Caller ID (CID) of the call server 12 appearing on the /c" 1 PSTN line 1 OR, if no CID is available or CID detection is not possible, then it is assumed, immediately after requesting (either by the use of METHOD 1 or METHOD 2) a call back from the call server 12, that the next incoming call on any /c* PSTN line 1 is the call back call from the call server 12. In the latter case, the procedure for verifying the next incoming call is the call back from the call server 12 is as follows:
  • the PTID 14 answers the next incoming call on the /c" 7 PSTN line 1 assuming it is the call server 12 call back call. b. Once the /c" 7 PSTN line 1 is answered, the PTID 14 waits for a predetermined DTMF identification sequence from the call server 12 (for example, the DTMF sequence "BBB") c. IF no call server 12 identification DTMF sequence is detected THEN IF there is a free PBX line 15 (the m th PBX line) THEN
  • PCSCC semi-permanently "open" is advantageous for reducing the total call setup time by eliminating the need to establish new free PCSCCs every time a new call is initiated from a user at the source telephony device 2.
  • the feature could operate as follows:
  • the PTID 14 On the termination of a call through an active PCSCC, the PTID 14 signals the call server to keep the currently established PCSCC to remain open (and subsequently free).
  • the signalling message from the PTID 14 to the call server 12 for keeping the PCSCC open could be, for example, the DTMF sequence "BBB * ".
  • the call server 12 Upon recept of this signalling message from the PTID 14, the call server 12 will not terminate the PCSCC and the PCSCC becomes free and will be available by the call server 12 for receiving new values of the number A/ ⁇ from the PTID 14 and then subsequently establishing new end-to- end communications as described in the section previously herein titled Outgoing Calls.
  • the PTID 14 signals the call server 12 to terminate the currently established PCSCC.
  • the signalling message from the PTID 14 to the call server 12 for terminating the PCSCC could be, for example, the DTMF sequence "CCC*".
  • the call server 12 terminates the PCSCC.
  • algorithms can be implemented at the PTID 14 or at the call server 12 to ensure that there is a maximum amount of time that the PCSCCs are permitted to remain open. Once that permitted maximum amount of time elapses, the PCSCCs will be terminated if they are not active. Further, algorithms can be developed to ensure that there is a maximum number of PSTN lines 1 that are permitted to be used to support free PCSCCs. For example, the following algorithm could be used to ensure that a maximum of M (M ⁇ N) PCSCCs remain free at any one time and that individual PCSCCs do not remain open for more that T seconds:
  • PTID 14 signals the call server 12 to terminate this PCSCC
  • PTID 14 signals call server 12 to terminate this PCSCQ
  • PTID 14 signals call server 12 to keep this PCSCQ open
  • PTID 14 signals call server 12 to terminate this PCSCQ END IF
  • V (V ⁇ N) free PSTN lines 1 are left free for the reception of incoming calls:
  • PTID 14 signals call server 12 to terminate the oldest existing free PCSCC

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

Selon l'invention, une communication est établie entre un dispositif de téléphonie source (2) et un dispositif de téléphonie destinataire (24) sur un réseau de télécommunications en fournissant une interface (14) pour coupler un autocommutateur téléphonique privé (4) et le réseau de télécommunications. L'autocommutateur téléphonique privé (4) dessert une pluralité de dispositifs de téléphonie (2) par l'intermédiaire de lignes téléphoniques de branchement (5). Le réseau de télécommunications fournit au moins deux lignes téléphoniques (1) à l'autocommutateur téléphonique privé (4). L'une des lignes téléphoniques (1) donne accès à un canal de télécommunications disponible. Cette ligne téléphonique (1) et une ligne téléphonique de branchement (5) de l'autocommutateur téléphonique privé (4) sont pontées par l'interface (14). Une communication est acheminée entre le dispositif de téléphonie source (2) et le dispositif de téléphonie destinataire (24).
PCT/AU2008/001426 2007-09-25 2008-09-25 Système, appareil et procédé de communication Ceased WO2009039576A1 (fr)

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Application Number Priority Date Filing Date Title
AU2007905239A AU2007905239A0 (en) 2007-09-25 System, Apparatus and Method for Communication
AU2007905239 2007-09-25

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WO2009039576A1 true WO2009039576A1 (fr) 2009-04-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017130857A (ja) * 2016-01-22 2017-07-27 信一 宮城 通信方法，通信プログラムおよび通信装置

Citations (4)

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Publication number Priority date Publication date Assignee Title
US6275574B1 (en) * 1998-12-22 2001-08-14 Cisco Technology, Inc. Dial plan mapper
US20020188755A1 (en) * 2001-05-26 2002-12-12 Eung-Moon Yeom Routing service method in voice over internet protocol system
US20030072330A1 (en) * 2001-10-13 2003-04-17 Doo-Yong Yang Internet protocol telephony exchange system and call control method thereof
EP1551164A2 (fr) * 2003-12-31 2005-07-06 Alcatel Intégration basée client de systèmes PBX et de messagerie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6275574B1 (en) * 1998-12-22 2001-08-14 Cisco Technology, Inc. Dial plan mapper
US20020188755A1 (en) * 2001-05-26 2002-12-12 Eung-Moon Yeom Routing service method in voice over internet protocol system
US20030072330A1 (en) * 2001-10-13 2003-04-17 Doo-Yong Yang Internet protocol telephony exchange system and call control method thereof
EP1551164A2 (fr) * 2003-12-31 2005-07-06 Alcatel Intégration basée client de systèmes PBX et de messagerie

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017130857A (ja) * 2016-01-22 2017-07-27 信一 宮城 通信方法，通信プログラムおよび通信装置

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