Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q3/00—Selecting arrangements
  • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
  • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
• • 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
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L63/00—Network architectures or network communication protocols for network security
  • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
  • H04Q2213/13093—Personal computer, PC
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
  • H04Q2213/13106—Microprocessor, CPU
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
  • H04Q2213/13175—Graphical user interface [GUI], WWW interface, visual indication
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
  • H04Q2213/13199—Modem, modulation
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
  • H04Q2213/13204—Protocols
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
  • H04Q2213/13209—ISDN
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
  • H04Q2213/1322—PBX
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
  • H04Q2213/13339—Ciphering, encryption, security
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
  • H04Q2213/13389—LAN, internet
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
  • H04Q2213/13405—Dual frequency signaling, DTMF

Definitions

• the invention relates to a system for implementing telephone services inside one or more telephone installations comprising several telephone terminals managed by at least one private branch exchange. It also relates to a control unit of a switch and a CTI server.
• the invention applies to the services offered by systems called CTI, in other words to Telephone and Computer Coupling systems.
• a private branch exchange is also known by the name of PABX, abbreviation from the Anglo-Saxon abbreviation Private Automatic Branch Exchange.
• telephone terminal means any equipment or telephone set allowing access to the switched telephone network (PSTN).
• PSTN switched telephone network
• FIG. 1 shows a diagram of a system offering telephone and computer coupling services according to a recent state of the art.
• Telecommunications equipment 11A, 11B, 11C is also available on this site. (for example IT) linked by a telecommunications network to a voice telecommunications server and / or to a WEB server 50.
• An authorized user consequently holding a secret code for access to the services rendered by the CTI server 30 can request these services via the devices 11A or 11B if he is on the site in which the PABX 20 is installed but also from the outside from an 11C device allowing access to the CTI server through the voice server and / or the WEB site 50.
• a CTI link generally respects a standard market protocol, but this protocol is adapted and interpreted differently from one manufacturer to another. On the other hand, this link evolves for a given PABX with the different versions of the PABX.
• CTI server must propose management systems (or drivers in Anglo-Saxon literature) by model and by version of PABX. Managing a CTI server therefore becomes difficult and updates are frequent.
• CTI links do not always support the call forwarding function and the CTI server controls only one PABX at a time.
• the computer equipment 30 is connected to a remote server making it possible to offer telecommunications services.
• connection between the computer equipment 30 and the server 50 is carried out through a computer network on which the communication protocol used is the TCP / IP protocol.
• the present invention therefore aims to offer CTI services (telephone and computer coupling) fully secure at low cost on any telephone installation and without the need to use PABX of recent generation.
• CTI services can be rendered using a single CTI server on one or more different telephone installations via an interface linked to each telephone installation.
• the invention also makes it possible to reduce the costs in the case where PABXs of recent generation are available since it is not necessary with the system proposed by the present invention to use a CTI link, a link which is particularly expensive. .
• the subject of the invention is therefore a system for implementing telephone services on one or more telephone installations themselves comprising several telephone terminals managed by one or more private branch exchanges, mainly characterized in that it includes computer equipment for server type accessible by a computer network, and one or more interfaces capable of transmitting signaling control signals corresponding to the service (s) requested to control one or more exchanges, these interfaces being therefore connected to telephone lines of the exchanges.
• Telephone service orders sent by the server are call forwarding or automatic callbacks or services related to incoming calls.
• the telephone service requested can be the programming of call forwardings from a station of a PABX.
• Call forwarding is an automatic forwarding of calls intended for a telephone terminal of an installation, to another terminal of this installation or to a terminal outside this installation.
• the requested telephone service can be the automatic call back from a terminal of the caller in order to put it in contact with a called terminal.
• the caller's terminal can be a terminal internal or external to a telephone installation and the called terminal can be a terminal internal or external to this telephone installation.
• the control of the interfaces connected to the automatic exchanges by the CTI server is secured by an authentication procedure or by encryption of the messages sent.
• the invention also relates to a telecommunications server (CTI), mainly characterized in that it is connected to one or more automatic exchanges
• PABX by means of a computer link through at least one interface connected by telephone lines to (x) said exchanges, in order to control this or these exchanges to obtain telephone services, said exchanges may be of different technology.
• the interface or interfaces are capable of generating signals corresponding to telephone service commands received from the server.
• the invention also relates to a control unit of a PABX mainly characterized in that it uses telephone lines of the PABX to convey signals corresponding to telephone service commands.
• This member includes an interface capable of transmitting signaling control signals on the telephone lines of at least one automatic branch exchange.
• the controller is connected to a telecommunications server by a computer link to receive telephone service orders from this link.
• the interface includes one or more analog or digital modems and a coupler making it possible to connect this or these modems to the computer link.
• the interface is in the form of boxes and this interface is secure.
• the telephone lines connecting the interface to a PABX are analog or digital.
• Signaling control signals are DTMF or ISDN or voice signals.
• the system proposed by the invention allows fully secure access to a telecommunications service on PABX using an economical interface including analog modems or digital, connected on some analog or digital channels (ISDN lines) of the PABX.
• This interface is controlled via the IP protocol in fully secure mode. It makes it possible to make the remote forwarding functions of the stations which are in the installation and which are controlled by the PABX, also the automatic callback function via for example a WEB server remote from the PABX, etc.
• incoming services incoming calls
• incoming calls incoming calls
• the interface can be used on a large ma ority of market PBXs without requiring the user client of the installation to buy CTI links which are often expensive. Thanks to the use of this interface, functions such as programming the forwarding of telephone sets in the installation managed by the PABX, automatic call back to a caller's terminal to put it in contact with a called terminal, as well as management of incoming calls can be carried out remotely for a moderate cost.
• a CTI server can control one or more interfaces, each of which is connected to one or more PABXs.
• FIG. 1 shows a telephone and computer coupling system according to the prior art for the implementation of telephone services according to the invention
• Figure 2A shows a system for the implementation of telephone services according to l invention according to the present invention
• FIG. 2B shows a system according to the invention set up and illustrating a telephone installation in more detail
• FIG. 3 shows the detail of the construction of an interface 300.
• a control member 300 allows, as illustrated in FIG. 2A, to control one or more automatic switches 20 from telephone lines L1,... Ln. It is connected for this to a telecommunications server 40 (CTI server) by a computer link In.
• CTI server telecommunications server 40
• the server can be connected to several organs 300 by computer links.
• this member is a computer telephone coupling interface (CTI) 300 produced in the form of boxes which are connected to the automatic switch 20 by one or more analog or digital telephone lines L1. , Ln available on this PABX and by a computer network to a computer equipment of the remote CTI server type 40.
• CTI computer telephone coupling interface
• connection between the CTI server 40 and the interfaces 300 is preferably secure.
• the connection is made secure for example by performed by any known encryption algorithm.
• the exchanges are carried out according to the TCP / IP protocol.
• the interface 300 is able to configure the PABX to allow the programming service of remote forwarding from a telecommunications terminal or telephone set of the installation, managed by this PABX
• the interface generates, for example, a DTMF sequence (Dual Tone Multifrequency), or an ISDN sequence, or a voice sequence, corresponding to the command signals received from the CTI server to program the PABX according to the service requested.
• DTMF sequence Dual Tone Multifrequency
• ISDN sequence ISDN sequence
• the interface 300 is therefore connected on a few analog (or digital) channels VI to Vn of the PABX 20.
• the remote server 40 controls one or more interfaces 300 according to the secure IP protocol by a conventional technique which was mentioned above.
• the command parameters that will be sent in the case of this function will be the number of the extension to be returned (managed by the PABX), the telephone number of the return, the confidential code of the extension of the user entitled to the service, the PABX extension code and PABX forwarding codes.
• the CTI server 40 controls an interface so that the latter first calls the requester, then it makes a consultation call to call the requested number, then it performs either a transfer or a conference call.
• the interface can be silent and it can also stop calls since it is master of the line.
• This service can advantageously be used to request online services in the case of a remote meeting, for example by sending DTMF codes during communication.
• This system can also be used to render incoming services on incoming calls, allowing these calls to be assigned to a number, or a list of internal or external numbers to the PABX. This assignment can be done dynamically, via the interface and the CTI server. The digital lines connected to the interface can make this service even faster and more efficient.
• Another service can be the use of this interface in order to synchronize the forwarded requests programmed for a telephone number on the intelligent network of an operator and for the extension of this same user on PABX for internal calls to the PABX or the PABX network.
• the interface 300 therefore comprises, as has been said, a set of one or more analog and / or digital modems 301 connected respectively to one or more analog or digital lines Ll-Ln connected to the PABX.
• This or these modems are connected to a standardized RS232 coupler 302 including a processor 303 capable of decrypting the messages received or of encrypting the messages sent, thus ensuring a secure computer-type link in order to connect the interface to the CTI server.
• the user If the user is on the site of the telephone installation, he will request this return, for example from the telecommunications equipment 11A or 11B at his disposal which allows him to access a WEB site or a voice server . In the case where the user is outside the installation site, then he can pass his request from an external telecommunications equipment giving him access to the WEB site or to the voice server 50.
• the user must communicate his identification, the number of the extension he 'wishes to send back, the extension number to which calls will be forwarded, his confidential code to verify that it is an authorized person, and confirm his request.
• the CTI server receiving this request through the WEB site 50 transmits secure control signals (encrypted or certified) on the TCP / IP link for the interface 300.
• secure control signals include: the extension code of the PABX extension, the number of the extension to be returned, the confidential code of the user on the PABX, the code or command to return, the return number, the line hang-up command analog used by the interface.
• the interface generates a corresponding DTMF or voice sequence for configuring the PABX.
• the CTI server will control the interface by sending it the following commands: - the number of the caller (user), detection of the caller's answer, make a consultation call with the number of the called party, hanging up or transfer of the line used by the interface.
• the caller is in communication with the called party.

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Physics & Mathematics (AREA)
• Astronomy & Astrophysics (AREA)
• General Physics & Mathematics (AREA)
• Computer Networks & Wireless Communication (AREA)
• Telephonic Communication Services (AREA)
• Sub-Exchange Stations And Push- Button Telephones (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=9544584

Family Applications (1)

Country Status (7)

Families Citing this family (6)

Citations (1)

Family Cites Families (8)

• 1999
  • 1999-04-19 FR FR9904905A patent/FR2792480B1/fr not_active Expired - Fee Related
• 2000
  • 2000-04-18 AU AU41260/00A patent/AU4126000A/en not_active Abandoned
  • 2000-04-18 CA CA002370526A patent/CA2370526A1/fr not_active Abandoned
  • 2000-04-18 EP EP00920835A patent/EP1172012A1/de not_active Withdrawn
  • 2000-04-18 JP JP2000613208A patent/JP2002542742A/ja active Pending
  • 2000-04-18 US US10/031,245 patent/US7177411B1/en not_active Expired - Fee Related
  • 2000-04-18 WO PCT/FR2000/001012 patent/WO2000064198A1/fr active Application Filing

Patent Citations (1)

Non-Patent Citations (1)

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