EP1741300A2 - RESEAU DE TELECOMMUNICATION COMPORTANT PLUSIEURS RESEAUX PRIVES SUPERPOSES ; AUTOCOMMUTATEUR POUR LA MISE EN ŒUVRE DE CE RESEAU ; ET CENTRE D'APPELS D'URGENCE - Google Patents
RESEAU DE TELECOMMUNICATION COMPORTANT PLUSIEURS RESEAUX PRIVES SUPERPOSES ; AUTOCOMMUTATEUR POUR LA MISE EN ŒUVRE DE CE RESEAU ; ET CENTRE D'APPELS D'URGENCEInfo
- Publication number
- EP1741300A2 EP1741300A2 EP05747060A EP05747060A EP1741300A2 EP 1741300 A2 EP1741300 A2 EP 1741300A2 EP 05747060 A EP05747060 A EP 05747060A EP 05747060 A EP05747060 A EP 05747060A EP 1741300 A2 EP1741300 A2 EP 1741300A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- network
- exchange
- pbx11c
- pbx21a
- networks
- 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.)
- Withdrawn
Links
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- 238000004891 communication Methods 0.000 description 8
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Classifications
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- 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
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/009—Arrangements for interconnection between switching centres in systems involving PBX or KTS networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2242/00—Special services or facilities
- H04M2242/04—Special services or facilities for emergency applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13072—Sequence circuits for call signaling, ACD systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13176—Common channel signaling, CCS7
-
- 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
- H04Q2213/1325—Priority service
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/1337—Operator, emergency services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13384—Inter-PBX traffic, PBX networks, e.g. corporate networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13396—Signaling in general, in-band signalling
Definitions
- the invention relates to: a telecommunications network comprising several superposed private networks; a PABX, and an emergency call center, for the implementation of this network.
- the private networks considered are generally corporate networks.
- a corporate network is often a set of switches connected to each other. Each switch offers specific services according to a specific implementation and is based on specific protocols.
- Each terminal of this network has access to certain services according to an authorization table located in the terminal's automatic branch exchange, this table or a portion of a table being specific to this terminal.
- an authorization table located in the terminal's automatic branch exchange, this table or a portion of a table being specific to this terminal.
- any terminal on this network can activate all of the services on each of the exchanges in the network under consideration, provided that its own performance, routing rules, and the configuration data of the exchanges .
- the activation, by a terminal attached to a first automatic branch exchange, of the services offered by a second automatic branch exchange of the same corporate network is made possible by the transmission of information, according to signaling protocols, on links connecting the various automatic branch exchanges of the company network.
- the protocol used is often specific to a switch manufacturer.
- the links which connect the various automatic exchanges of the same network can be made physically in different ways, by:
- the terminals of a corporate network are each identified by a directory number which belongs to a numbering plan specific to this network. In the same network, each directory number is unique.
- this second PABX is searched for in a routing table that designates a signaling link to link the first and second PABX to send signaling information to the second.
- the signaling protocols used within the first and second corporate networks are different from Q.931, and they can be different from each other.
- the numbering plans for corporate networks are completely independent, so much so that the same number can be assigned to both equipment from a first corporate network and other equipment from a second company network.
- the combination of the two numbering plans, in the event of interconnection of two independent enterprise networks, would pose a call routing problem. This meeting is therefore not possible, except by making a new single and common numbering plan corresponding to a merger of the two networks to form a single network, which in most cases turns out to be impossible.
- Document US 6,650,632 describes a system for interconnecting two corporate networks via a public network.
- a basic telephone link carries the signaling messages that can be supported by the signaling protocol used in the public network considered.
- Each of these corporate networks has a gateway to create an auxiliary connection to transmit signaling messages that are not supportable by the signaling protocol used in the public network.
- This auxiliary connection is completely independent of the basic telephone link. For example, it goes through the public Internet.
- this known system does not deal with the problem of independent numbering plans. This system therefore requires that the two networks have the same numbering plan. This system cannot therefore be used to make two private networks which already exist and which are independent collaborate, ie for which it is practically impossible to merge their respective numbering plans into a single numbering plan.
- the object of the invention is to allow two private networks to collaborate, to provide certain precisely defined services, while preserving the independence of their numbering plans, and the independence of all their services. not affected by this collaboration.
- the services concerned are those which are of common interest, in particular commercial, for a plurality of private networks.
- different vehicle manufacturers use common parts or sub-assemblies to build vehicles of different brands.
- the engine which is an essential element.
- Certain engines are studied and manufactured by a “motorist” company independent of the automobile manufacturers, even if there can be particular financial links.
- the society " engine manufacturer ” has its own telecommunications network, as do the various car manufacturers. It is desirable that a repairer in a workshop of one of the car manufacturers can call a correspondent of the company "engine manufacturer” during a difficult repair, or even have direct access to a technical database of the company "engine manufacturer” .
- All these networks at the lowest level (Car manufacturers) therefore need to communicate to a higher level (The "motorist" company) of this hierarchy.
- the communications between these two levels usually pass through a conventional telephone link of the public telecommunications network. This has the consequence that communications benefit from less rich services than those provided in each of the corporate networks, respectively of the engine manufacturer and the automobile manufacturers. It is also desirable to have a repairman from a first manufacturer communicate with a counterpart from a second manufacturer (Two networks of the same level), for example to solve a common technical problem concerning an engine, by benefiting from richer services than those available in the public network.
- the network according to the invention is also applicable in the field of emergency call centers. An emergency call center is used to receive all emergency telephone calls made in a given region.
- the line number of the calling terminal is sent by the public network to the call center.
- a separate signaling network and a protocol called CAMA Centralized Automatic Message Accounting
- CAMA Centralized Automatic Message Accounting
- the call center uses a database to determine the location of the calling terminal, from its line number.
- An emergency call center can itself include a private network of the corporate network type, offering advanced services for calls within this private network.
- the auto-switch connecting the calling terminal provides, in addition to the services of sending the number and automatic location of a calling user, additional services such as: activation, by an operator of the emergency call center, consultation call, maintenance of a call even after the request for release by the requester, consultation of a directory inside the corporate network, automatic call back, intrusion into a communication, the location of a terminal (which has not called) on request from an emergency call center, to find a person likely to be in a dangerous situation, consultation of the internal directory of the company, by the staff of the emergency call center, the remote control of alarm devices, in the company, by the staff of the emergency call center, - the broadcasting of a message alarm on all telephone sets of the entity reprise.
- additional services such as: activation, by an operator of the emergency call center, consultation call, maintenance of a call even after the request for release by the requester, consultation of a directory inside the corporate network, automatic call back, intrusion into a communication, the location of a terminal (which has not called) on request from an emergency
- the object of the invention is to propose a method making it possible to remedy this limitation.
- the object of the invention is a telecommunications network comprising several business networks, these business networks having respectively independent numbering; characterized in that it comprises at least one enterprise network having at least one first automatic branch exchange comprising a first gateway ensuring in particular dial translation, and comprising at least one other corporate network having at least one second automatic branch exchange comprising a second gateway providing in particular a number translation; in that these two gateways are connected by a link, and in that these two gateways and this link are capable of transporting specific signaling for the corporate network.
- a first independent private network has a private numbering plan PNP1
- a second private network has a private numbering plan PNP2
- these numbering plans PNP1 and PNP2 have identical numbers to designate different terminals.
- two terminals belonging respectively to these two networks, are designated by the same number 4321.
- Each of these two terminals is called within its own network by dialing the numbers 4321.
- a number translation intervenes for a call from the first network to the second network, and vice versa.
- the terminal designated by the number 4321 in the second network is called from the first network, it is designated, until the exit from the first network, by a number which is outside the numbering plan of the first network, for example 64321 so that the routing of the call is possible without error through the first network.
- a user of the first network therefore dials 64321 on the keypad of a telephone terminal.
- the call establishment request is routed to a PABX which allows access to the public network and which includes a number translation gateway, according to the invention.
- a PABX which allows access to the public network and which includes a number translation gateway, according to the invention.
- the call establishment request crosses this gateway, to reach the second private network via a public network, the number 64321 is translated by the gateway into a number 4321 which will be perfectly usable for routing in the second network.
- the terminal 4321 of the first network is designated, until the exit from the second network, by a number which is outside the numbering plan of the second network, for example 74321 so that the routing of the call is possible at through the second network.
- the number 74321 is translated into a number 4321 by a number translation gateway, located at the outlet of the second network. Thanks to this number translation, the two corporate networks can communicate without having to go through the basic telephone service for reasons of incompatibility of the respective numbering plans of the two corporate networks. They can therefore collaborate to provide services of the corporate network type, provided that they can exchange signaling supporting such services. There may still be a problem: If the two corporate networks use different signaling protocols, they cannot directly exchange signaling signals.
- said gateways and the link are capable of transporting specific signaling for the corporate network.
- the network is characterized in that at least one of said gateways provides information transcoding functions between the signaling protocol used in the corporate network to which it belongs, and the signaling protocol used on the link, and vice versa.
- the network thus characterized makes it possible to communicate first and second private, independent networks, using different internal signaling protocols, and possibly incompatible with the crossing of a public network.
- the first private network uses the QSIG protocol while the second private network uses the PSS1 protocol of the H.245 standard. Under these conditions, they could not communicate directly.
- the gateways located at the ends of the link then ensure a signaling protocol transcoding in both directions.
- a third signaling protocol on the link between the two networks for example the standardized SIP protocol (Session Initiation Protocol) which can be transmitted over a public network.
- SIP protocol Session Initiation Protocol
- Each private network can thus keep its own signaling protocol, and the common signaling protocol is only used to cross the public network.
- the SIP protocol allows a wide variety of services, and it is particularly well suited to the transmission of information over the Internet.
- the signaling information of the first network is transcoded according to the SIP protocol before being transmitted on the link connecting the two networks.
- the signaling information of the second network in accordance with PSS1 protocol of the H.245 standard, are transcoded according to the SIP protocol before being transmitted on the link connecting the two networks.
- the signaling information of the second network in accordance with PSS1 protocol of the H.245 standard, are transcoded according to the SIP protocol before being transmitted on the link connecting the two networks.
- PSS1 protocol of the H.245 standard are transcoded according to the SIP protocol before being transmitted on the link connecting the two networks.
- the QSIG protocol At the entrance to the first network, they are transcoded according to the QSIG protocol.
- one of the two networks uses the same protocol (SIP for example), as the protocol used on the link connecting the two networks, while the other network uses a different protocol.
- SIP Session Initiation Protocol
- the first network does not require protocol transcoding in its gateway while the other network performs protocol transcoding in its gateway.
- the network is characterized in that the first exchange is configured with data and routing rules authorizing, for this first exchange, access to at least one service offered by this second exchange.
- the network is characterized in that the second exchange is configured with data and routing rules authorizing, for this first exchange, access to at least one service of this second exchange.
- the network is characterized in that the second exchange is configured with data and routing rules authorizing, for this second exchange, access to at least one service of this first exchange.
- the network is characterized in that the first exchange is configured with data and routing rules authorizing, for the second exchange, access to at least one service offered by this first exchange.
- the network is characterized in that the first PABX is configured with data and routing rules prohibiting, for all other enterprise networks of the first level, access to all of its services via the second level.
- the network thus characterized makes it possible to maintain the independence of private networks, while allowing them to collaborate for precisely defined services.
- the network according to the invention can consist of an emergency call center and several corporate networks, located in an area served by this center.
- the emergency call center benefits from richer services, because the terminal's PABX caller is transformed into a virtual node of the network of the emergency call center, at least for certain predetermined services in agreement with the company owning this switch:
- the home switch of the calling terminal is connected to the PABX of the emergency call center, by a link capable of transporting the signaling of a corporate network, that is to say allowing the transmission of richer signaling than can transmit a telephone link of base in a public network; and on the other hand, it is able to overcome the lack of consistency of the numbering plans, thanks to the numbering translation carried out by the two gateways.
- an emergency call center receives an urgent call from a private network belonging to a company
- the call center branch exchange routes the call to a human operator with whom the calling user is going converse.
- This operator is provided with at least one telephone terminal and possibly other equipment such as a PC.
- the operator of the emergency call center may have to activate additional services available on the company's PBX: for example, establish a three-way conference with another user on the corporate network. appellant.
- the emergency call center sends the necessary commands, on the signaling link, established by the company's PABX during the emergency call. These commands are intended to search for someone in the directory of the private network, to call this third party, and to conference them.
- a second object of the invention is a switch for a company network, characterized in that it comprises:
- - means for connecting it to another automatic branch exchange of another corporate network, via a tunnel link through a public network; - And a gateway ensuring in particular a translation of numbering.
- a third object of the invention is an emergency call center comprising at least one such switch.
- FIG. 1 shows functionally a first example of a network according to the invention.
- FIG. 2 schematically represents a second example of a network according to the invention, in which there are three emergency call centers.
- the example shown in FIG. 1 is a telecommunications network made up of two levels: A lower level L1 made up of two business networks PN11 and PN12.
- the P 11 network includes three interconnected PBX11a, PBX11b, PBX11c switches.
- the PN12 network includes three interconnected PBX12a, PBX12b, PBX12c switches.
- a higher level L2 consisting of a single PN21 corporate network comprising:
- PBX11a Three virtual PBX11a ', PBX11b', PBX11c 'PBXs which actually belong to the PN11 corporate network of the lower level L1. They are interconnected with each other, as in the PN11 network.
- the switch PBX11c ' is connected to the PBX21a switch via a virtual link T4' which is the image of a real link T4, a tunnel link between the PBX21a and PBX11c switches via a public telecommunications network not shown.
- a PBX12c 'virtual PBX which actually belongs to the PN12 corporate network of the lower level L1, and which is connected to the PBX21c PBX by a virtual link T5' which is the image of a real link T5, tunnel link between the PBX21c and PBX12c exchanges via a public telecommunications network not shown.
- Each link between corporate networks, such as T4 or T5 is a corporate network route, which can be achieved through a public network by:
- a tunnel link is usually used to connect two remote sites of the same company, via the public network.
- the tunnel link guarantees the authenticity and confidentiality of voice signals and other data during the crossing of the public network. It also makes it possible to transmit rich signaling, using inter alia the QSIG protocol which is a standardized signaling protocol for corporate networks.
- each private network PN11, PN12, PN21 comprises at least one gateway which in particular ensures dialing translation.
- the PBX21a and PBX11c switches each include software means constituting a gateway for establishing the T4 link; and the PBX21c and PBX12c switches each include software means constituting a gateway for establishing the T5 link.
- the translation of the numbering is necessary to allow correct routing of the calls, despite the fact that the numbering plans of the different networks PN21, PN11, PN12 are independent. Indeed, two terminals belonging to two independent private networks (PN21 and PN11 for example) can have two identical numbers, respectively in the numbering plans of the networks to which these terminals belong.
- a second necessary condition for satisfactory collaboration between several independent private networks is a control of the access rights to the services that each is likely to provide.
- a PABX is configured with various tables, managed by software. For example: tables of directories, categories, authorization / prohibition of access to services, routing, etc.
- Each node, of the same corporate network includes all or part of these tables. All nodes on the same network offer substantially the same services. Access to each service is authorized or prohibited terminal by terminal, in the tables of the automatic branch exchange of the terminal considered.
- a terminal requests the establishment of a call, or requests a service
- software is executed in the node to which this terminal is attached.
- This software authorizes or not the requested action, depending on the content of the tables of this node.
- the second node performs the requested action without making any checks using its own software and its own tables. For example, if a user connected to a first node on a corporate network requests the establishment of an international call, and if this first node does not have a direct connection to the public network, he must route the request to call to a second node of this corporate network, which has a direct link with the public network.
- the first node checks in its tables that this user has the right to request the establishment of an international call, and it determines that the call must be routed via the second node. A request to establish an international call is then sent to the second node. The second node receives this request and establishes a path to the public network without making any additional verification of the rights that this user has.
- the node requesting an action performs authorization and / or access prohibition checks, while the recipient node does not carry out checks.
- verifications are carried out by the recipient node and / or by an intermediate node.
- the PBX21a PBX of the PN21 network is configured with data and routing rules authorizing, for the PBX11c PBX, of the lower level L1, access to at least one service offered by the network.
- PN21 of higher level L2, and prohibiting, for the PBX11c, access to all the other services of the PN21a network.
- the corporate network PN21 belongs to a “motorist” company, while the corporate networks PN11 and PN12 belong to two car manufacturers respectively.
- a repairman in a workshop of one of the car manufacturers has a telephone terminal connected to the PABX PBX11c, and he wishes to establish a call with the telephone terminal of an expert from the "motorist" company, connected to the PBX21a PABX.
- the repairer dials the expert's extension call number using a number format specific to the PN11 company network.
- the PBX11c PABX using its software and its various tables, checks that the terminal of this repairer has the right to establish a call to the PN21 network of the "motorist" company. Then it determines that the call must be routed to the PBX21a PABX via the T4 link.
- the gateway integrated into the PBX11c PABX translates the number in the format corresponding to the numbering plan of the PN21 destination network.
- the PBX21a PABX receives this call setup request. It checks, using its software and its various tables, that the terminal of this repairer and / or the PBX11c automatic switch has the right to establish a call with the terminal of the expert requested; and finally he establishes the call.
- the PBX11c switch of the PN11 network, of the lower level L1 is configured with data and routing rules authorizing, for the PBX21a switch, of the upper level L2, access to at least a service offered by this PBX11c PABX.
- an expert from the “motorist” company wishes to establish a call with a repairer in a workshop of one of the car manufacturers, whose terminal is attached to the PABX PBX11c.
- the expert dials the repairer's terminal call number according to a number format specific to the PN21 company network of the "motorist" company.
- the PBX21a PABX using its software and its various tables, verifies that the terminal of this expert has the right to establish a call with the PBX11c PABX from the car manufacturer, and determines that it is necessary to route the call to the PBX11c PABX via the T4 link.
- the gateway integrated into the PBX21a PABX translates the number in the format corresponding to the numbering plan of the PN11 recipient network.
- the PBX11c PABX receives this call request. It checks, using its software and its various tables, that the terminal of this expert and / or the PBX21 automatic branch exchange has the right to establish a call with the requested terminal; and finally he establishes the call. 3)
- the PBX21a PBX of the PN21 network is configured with data and routing rules prohibiting, for the other PN12 corporate network of the first level L1, access to all the services of the PN11 network, via the upper level L2, to keep the PN11 and PN12 networks completely independent.
- a repairer in a workshop of an automobile manufacturer has a telephone terminal attached to the PBX12c switch, and he would like to establish a call with a repairer in a workshop of another automobile manufacturer connected to the PBX11c switch, in passing through the PN21 company network of the "motorist" company.
- the PBX21c PABX receives this call request. It checks, using its software and its various tables, whether the PBX12c PABX has the right to establish a call with the PBX11c PABX. He notes that he does not have this right, and therefore refuses to establish the appeal.
- the PBX21a PBX of the PN21 network is configured with data and routing rules authorizing, for the PN12 corporate network of the lower level L1, access to at least one service of the network.
- PN11 from the lower level L1, to authorize certain exchanges between the different networks of the lower level L1, via the upper level L2.
- a repairer in a workshop of one of the automobile manufacturers has a telephone terminal attached to the PBX12c branch exchange. He wishes to establish a call with a repairer in a workshop of another automobile manufacturer, having a telephone terminal attached to the PBX11c PABX via the PN21 corporate network of the "motorist" company.
- the PBX21c PABX receives this call request.
- the PBX12c PABX has the right to establish a call with the PBX11c PABX. Finally he establishes the call.
- the gateways integrated into the PBX12, PBX21c, PBX21a, PBX11c switches ensure the necessary number translations.
- the PBX11c switch of the PN11 network, of the lower level L1 is configured with data and routing rules prohibiting, for the other corporate network PN12 of the lower level L1, l access to all its services via the higher level L2, to guarantee that the PN11 and PN12 networks remain completely independent.
- a repairman in a workshop of one of the car manufacturers. II has a terminal connected to the PBX12c PABX. He wishes to establish a call with a repairer in a workshop of another automobile manufacturer having a telephone terminal attached to the PBX11c switch, via the PN21 corporate network of the "motorist" company.
- the network PN21 accepts to transmit the call establishment request to the PBX11c.
- the PBX11c PABX receives this call request. It checks, using its software and its various tables, that the PBX12c PABX has the right to establish a call with this PBX11c PABX.
- the PBX11c PBX notices that it does not have this right, so it refuses to make the call.
- the invention can be applied to emergency call centers.
- emergency call centers have a particularity: In the same private network, an emergency call launched on a site A, for example by dialing number 112, must reach a call center PSAPa, while qu '' an emergency call launched on site B, by dialing the same number 112, must reach a PSAPb call center; each of the PSAPa and PSAPb centers having a different number in the numbering plan (type E164) of the public network.
- the home exchange of the terminal calling on site A translates the number 112 dialed at site A into a first number of type E164.
- the PABX of the connecting terminal of the calling site on site B translates the number 112 dialed on site B into a second number of type E164.
- FIG. 2 schematically represents a second example of a network according to the invention, in which there are three emergency call centers PSAP1, PSAP2, PSAP3.
- the PSAP1 emergency call center serves a geographic area Z1 in which three PN 1, PN12, PN13 corporate telecommunications networks are located.
- the emergency call centers PSAP1, PSAP2, PSAP3 themselves constitute a network, by links not shown.
- Each emergency call center is a network of the corporate network type, comprising mainly a PABX, such as the PBXO PABX of the PSAP1 center.
- PABX such as the PBXO PABX of the PSAP1 center.
- the public network (not shown) can be analog or digital.
- Each corporate network PN11, PN12, PN13 includes at least one automatic branch exchange.
- the corporate network P 11 includes three PBX11a, PBX11b, PBX11c switches.
- the automatic exchanges of the corporate network PN11, of the corporate network PN12, and of the corporate network PN13 are configured to be virtual nodes of the corporate network of the center PSAP1. Therefore, the posts telephone services (not shown) from the PSAP1 center not only benefit from the services provided by the PBXO PBX from the PSAP1 center, but they can also benefit from certain services provided by the PBX11a, PBX11b, PBX11c exchanges from the PN1 corporate network. They can also benefit from certain services provided by the automatic exchanges (not shown) of the PN12 and P 13 enterprise networks.
- the PBXO switch in the emergency call center is configured with data and routing rules so that it does not compromise the independence of the corporate networks PN1, PN2, PN3.
- the list of services to which the PBXO PABX has the right to access is limited, and predetermined in agreement with the companies owning the PN1, PN2, PN3 company networks.
- each PBX11a, PBX11b, PBX11c switch is configured with data and routing rules authorizing access to at least one service offered by this switch, but prohibiting access to other services, for any other switch which does not belong to the same PN11 corporate network. It is the same in the other business networks PN12, and PN13.
- the PBXO PABX is connected to the PBX11a PABX by a T1 link, tunnel type, supported by a public telephone network.
- Software means constituting a gateway are integrated into the PBXO automatic switch, at the end of the link T1, in particular for translating a numbering.
- a gateway is integrated into the PBX11a switch, at the end of the T1 link, in particular for dialing translation.
- the PBX11a and PBX11c exchanges are served by the PSAPO emergency call center while the PBX11b exchange on the same PN11 network is served by the PSAP3 call center, for reasons of geographic proximity, for example.
- the PBX3 is connected to the PBX11b by a T6 link, of tunnel type, supported by a public telephone network.
- Software means constituting a gateway are integrated into the PBX3 auto-switch, at the end of the T6 link, in particular for dialing translation.
- a gateway is integrated into the PBX11 b auto-switch at the end of the T6 link, in particular for dialing translation.
- a generic emergency number for example 112 in Europe, 911 in the USA
- this generic number is recognized by this PBX11c PBX; and this PBX11c PABX will read, from a routing table, a number from the public network numbering plan (of type E164) designating a predetermined emergency call center, which serves the geographical area where the PABX is located PBX11c. In this example, it is the PSAP1 center.
- the PBX11c PABX does not itself have a gateway to the public network.
- This call is routed first to the PBX11a PABX which provides access to the public network, and more specifically to the region where the PSAP1 center is located.
- the gateway integrated in the PBX11a automatic exchange performs a protocol conversion, but no number translation in this case, since the number called is now a number in the public network numbering plan, and not a number in the center's private network PSAP1.
- the call remains virtually within the corporate network of the PSAP1 center.
- a user of the PN11 corporate network dials a generic emergency number on a telephone set attached to the PBX11b PABX
- this generic number is recognized by this PABX; and this PABX will read, from a routing table, a number from the public network numbering plan (of type E164) designating a predetermined emergency call center, which serves the geographical area where the PBX11b PABX is located .
- the PSAP3 center The PBX11 b PABX itself has an access gateway to the public network, and more specifically to the region where the PSAP3 center is located. This call is therefore routed directly from the PBX11b PABX to the public network by the T6 link.
- the gateway integrated into the PBX11b switch performs protocol conversion, but no number translation in this case.
- the call remains virtually within the corporate network of the PSAP3 center.
- the other company networks PN12, PN13 are connected in a similar way to the PBXO switch by tunnel links T2 and T3; and the PBXO PBX of the emergency call center PSAP1 is configured to be a node of the corporate network PN12, and a node of the corporate network PN13, without compromising the independence of these three corporate networks.
- the PBXO switch of the PSAP1 emergency call center exchanges signaling messages with the PBXs of company networks, preferably according to the standardized QSIG signaling protocol.
- the signaling protocol is preferably transported in a tunnel link protocol through the public telephone network.
- the choice of this tunnel link protocol depends first of all on the possibilities of the public network. This is for example: the SUU3 protocol of the Q.931 standard for a public network of the Digital Integrated Services type, or the H.225 protocol for a public network of the Internet type, using the H.323 protocol family , or even the SIP protocol, for a public Internet type network, using the SIP protocol.
- this signaling protocol is encapsulated in a tunnel link protocol so that the content of the messages exchanged remains authentic and confidential despite passing through the public network.
- the tunnel link protocol can be Q.931, or SIP or H.323.
- the scope of the invention is not limited to a specific signaling protocol and tunnel protocol. Nor is it limited to a number of levels equal to two. Figure 1 represents only two levels but other combinations are possible. For example, it is possible to add additional levels (3, 4, ...., n) by considering that the second level in which the network PN21 is located may include other networks PN22, PN23, ...
- a level L3 for example comprising a network PN31
- the PN31 network could thus be connected to the PN21, PN22, PN11, PN1n networks by tunnel links T7, T8, ..., Tn (not shown).
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Telephonic Communication Services (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0450766A FR2869491B1 (fr) | 2004-04-22 | 2004-04-22 | Reseau de telecommunication comportant plusieurs reseaux prives superposes ; autocommutateur pour la mise en oeuvre de ce reseau ; et centre d'appels d'urgence |
| PCT/FR2005/050269 WO2005107276A2 (fr) | 2004-04-22 | 2005-04-21 | Reseau de telecommunication comportant plusieurs reseaux prives superposes ; autocommutateur pour la mise en oeuvre de ce reseau ; et centre d'appels d'urgence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1741300A2 true EP1741300A2 (fr) | 2007-01-10 |
Family
ID=34944581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05747060A Withdrawn EP1741300A2 (fr) | 2004-04-22 | 2005-04-21 | RESEAU DE TELECOMMUNICATION COMPORTANT PLUSIEURS RESEAUX PRIVES SUPERPOSES ; AUTOCOMMUTATEUR POUR LA MISE EN ŒUVRE DE CE RESEAU ; ET CENTRE D'APPELS D'URGENCE |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20070165826A1 (fr) |
| EP (1) | EP1741300A2 (fr) |
| CN (1) | CN1961587A (fr) |
| FR (1) | FR2869491B1 (fr) |
| WO (1) | WO2005107276A2 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0604537D0 (en) * | 2006-03-07 | 2006-04-12 | Ghost Telecom Ltd | Method and apparatus of interfacing and connecting a wireless device(s) and specific application server(s) for location update(s), in-and out-going call(s)... |
| EP2840766B1 (fr) | 2013-08-21 | 2017-04-05 | Werner Blessing | Procédé de communication de confiance et système de communication permettant une communication de confiance |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5878127A (en) * | 1996-09-30 | 1999-03-02 | Sbc Technology Resources, Inc. | Method and apparatus for facilitating remote communications access to multiple locations within a telecommunications network |
| US6332022B1 (en) * | 1997-12-22 | 2001-12-18 | Nortel Networks Limited | Method and apparatus for routing emergency services calls in an intelligent network |
| US6453035B1 (en) * | 1998-03-02 | 2002-09-17 | Stentor Resource Centre Inc. | Method and apparatus for providing virtual private network services over public switched telephone network |
| US6650632B1 (en) * | 1998-06-30 | 2003-11-18 | Cisco Technology, Inc. | Feature transparency in a telecommunications network |
| US6687353B1 (en) * | 1998-12-11 | 2004-02-03 | Securelogix Corporation | System and method for bringing an in-line device on-line and assuming control of calls |
| FI109316B (fi) * | 1999-08-03 | 2002-06-28 | Nokia Corp | Menetelmä ja järjestelmä välittäjäpalvelun toteuttamiseksi tietoliikennejärjestelmässä |
| AU1779400A (en) * | 1999-12-01 | 2001-06-12 | Nokia Corporation | Signaling method and network element for a virtual private network |
| DE10031556A1 (de) * | 2000-06-28 | 2002-01-10 | Tenovis Gmbh & Co Kg | Verfahren zur Zugangsprüfung bei Einwahl über eine PSS1/QSIG-Leitung in eine Telekommunikationsanlage |
| DE10046320A1 (de) * | 2000-09-19 | 2002-04-04 | Siemens Ag | Verteiltes Kommunikationssystem |
| US6801607B1 (en) * | 2001-05-08 | 2004-10-05 | Mci, Inc. | System and method for preventing fraudulent calls using a common billing number |
| US6678357B2 (en) * | 2001-09-26 | 2004-01-13 | Siemens Information And Communication Networks, Inc. | Internet protocol (IP) emergency connections (ITEC) telephony |
| US7426218B1 (en) * | 2001-11-27 | 2008-09-16 | Verizon Business Global Llc | Communication systems and QSIG communications methods |
| US7248565B1 (en) * | 2002-05-16 | 2007-07-24 | Cisco Technology, Inc. | Arrangement for managing multiple gateway trunk groups for voice over IP networks |
| US6744859B1 (en) * | 2002-05-21 | 2004-06-01 | Intrado Inc. | System and apparatus for providing telephone communication between a caller and a special number call answering facility |
-
2004
- 2004-04-22 FR FR0450766A patent/FR2869491B1/fr not_active Expired - Fee Related
-
2005
- 2005-04-04 US US11/587,060 patent/US20070165826A1/en not_active Abandoned
- 2005-04-21 WO PCT/FR2005/050269 patent/WO2005107276A2/fr not_active Ceased
- 2005-04-21 EP EP05747060A patent/EP1741300A2/fr not_active Withdrawn
- 2005-04-21 CN CNA2005800178874A patent/CN1961587A/zh active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005107276A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2869491A1 (fr) | 2005-10-28 |
| CN1961587A (zh) | 2007-05-09 |
| WO2005107276A2 (fr) | 2005-11-10 |
| FR2869491B1 (fr) | 2006-08-18 |
| US20070165826A1 (en) | 2007-07-19 |
| WO2005107276A3 (fr) | 2006-05-18 |
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