WO2005046264A1 - Procede pour etablir une communication - Google Patents

Procede pour etablir une communication Download PDF

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Publication number
WO2005046264A1
WO2005046264A1 PCT/EP2004/052510 EP2004052510W WO2005046264A1 WO 2005046264 A1 WO2005046264 A1 WO 2005046264A1 EP 2004052510 W EP2004052510 W EP 2004052510W WO 2005046264 A1 WO2005046264 A1 WO 2005046264A1
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WO
WIPO (PCT)
Prior art keywords
telecommunication
network
telecommunications
data
message
Prior art date
Application number
PCT/EP2004/052510
Other languages
German (de)
English (en)
Inventor
Frank Kowalewski
Holger Schmidt
Original Assignee
Siemens Aktiengesellschaft
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
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2005046264A1 publication Critical patent/WO2005046264A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to a method for establishing a communication connection from a first telecommunication device via a telecommunication network to a second telecommunication device, and in particular relates to a method in which, when the call is signaled in the second telecommunication device, data objects, which for example
  • Contain images or sounds of the user of the first telecommunication device are played.
  • a telecommunications subscriber in particular when establishing a telephone connection if he knows the identity of the caller before answering or accepting the call.
  • the called telecommunications subscriber can use various devices to display the caller identification, for example in the form of the name and the telephone number of the caller.
  • a database is provided in the telecommunication device of the called telecommunication subscriber, for example in the form of an electronic telephone book, in which telephone numbers and associated names, but also an image of the respective name, are stored.
  • the telecommunications device of the person called can determine the associated name and the picture of the caller in the database and, in addition to the telephone number and the name, can also display the picture of the caller.
  • a further disadvantage of a method according to this method turns out that the caller himself has no influence on the picture stored and displayed in the telecommunication device of the call recipient.
  • the settings for the display and the selection of the picture are with the call recipient, whereby the caller can neither force the display of a certain picture nor update the displayed picture or can also send the call recipient a current picture.
  • a method for establishing a communication connection (in particular a telephone connection) from a first telecommunication device of a first telecommunication subscriber via a telecommunication network to a second telecommunication device of a second telecommunication subscriber according to a first aspect of the invention is created.
  • a data object of the first telecommunications subscriber is first stored on a data provision component. This can be done in many conventional ways of data transmission, for example by sending an e-mail or message according to the MMS (Multimedia Messaging Service) from the first telecommunication subscriber to the operator of the data provision component so that the operator opens a data object stored in the e-mail the data provision component stores.
  • MMS Multimedia Messaging Service
  • the data provision component or its operator can then send a confirmation message back to the first telecommunications network, which contains a reference (information) that specifies the address of the storage location.
  • a connection establishment message is now sent from the first telecommunication device to the telecommunication network together with the reference, which indicates the data object stored in the data provision component.
  • the telecommunication network signals to the data provision component that the data provision component should transmit the stored data object of the first telecommunication subscriber to the telecommunication network.
  • the data provision component transmits the data object requested by the telecommunications network to the telecommunications network.
  • the telecommunications network then transmits a call signaling message to the second telecommunications device, the transmitted data object being provided in the call signaling message.
  • the transmitted data object can then be played back by the second telecommunication device, in particular an image of the first telecommunication subscriber contained in the data object can be displayed on the second telecommunication device.
  • the second telecommunication subscriber can accept the call by corresponding operation (pressing an accept button) on the second telecommunication device and thus allow a communication connection, such as a telephone connection, to be established.
  • the telecommunications network can have a first subnetwork which is assigned to the first telecommunications device and a second subnetwork which is assigned to the second telecommunications device, the two subnetworks being connected to one another via a switching component, a so-called “gateway” ,
  • the first and the second subnetwork and also the entire telecommunications network can be designed as a mobile radio network which operates according to the GSM or UMTS standard.
  • the first and the second telecommunication device can be designed as a mobile radio device, a cell phone or as a computer with a corresponding radio module.
  • the switching component is designed to carry out the method steps mentioned above in the telecommunication network, in particular the step of signaling the data provision component and the step of transmitting the call signaling message to the second telecommunication device.
  • the data supply component can be arranged in a based on an Internet protocol network that ver with the switching component ⁇ is prevented, so that for example a transmission of a data can ten Beneficis performed from the data supply component to the telecommunication network or the switching component a http protocol.
  • the reference information has a Uniform Resource Identifier (URI) which specifies the storage location of the data object of the first telecommunications subscriber.
  • URI Uniform Resource Identifier
  • the first telecommunication device can be in a communication session according to the SIP protocol, while the second telecommunication device communication device is not in such a communication session.
  • the network or the switching component thus serves as an interface between a SIP telecommunications device and a non-SIP telecommunications device.
  • the first telecommunication device sends a so-called "INVITE" message to the telecommunication network or the switching component as a connection establishment message in order to indicate that a communication connection is to be established with the second telecommunication device.
  • the INVITE message also contains the reference information on the data object stored on the data provision component.
  • the telecommunications network After requesting the data object from the data provision component and sending the data object to the second communication device, the telecommunications network, in particular the switching component, can then send a preliminary confirmation message to the first telecommunication device, which indicates that the desired connection setup, for example, to the second telecommunication subscriber from the second telecommunication device. is signaled wisely by ringing the bell.
  • the data object can have multimedia contents such as image information, sound information or also text information.
  • a telecommunication arrangement which comprises a first and a second telecommunication device and a telecommunication network.
  • the first telecommunication device is designed to establish a communication connection, in particular a telephone connection, to the second telecommunication device via the telecommunication network according to a method described above according to the second aspect of the invention.
  • first a connection setup message with a data object assigned to the first telecommunication subscriber is sent to the telecommunication network in order to initiate the establishment of a communication connection, in particular a telephone connection, to the second telecommunication device.
  • a data object can have, for example, multimedia data, which include an image file, a sound file or a text file, etc.
  • the telecommunications network then stores the transmitted data object on a data provision component connected to the telecommunications network, such as a data server.
  • reference information is also determined which indicates the storage location of the data object, ie on which data provision component or in which memory area the data object is stored there.
  • a call signaling message is transmitted from the telecommunication network to the second telecommunication device, the (determined) reference information being provided in the call signaling message.
  • the reference information can have, for example, a "Uniform Resource Identifier" (URI). Since the reference information is now available in the second telecommunication device, the latter can itself decide on the further procedure. On the one hand, it can decide to accept the call of the caller (first telecommunication subscriber) without knowing its data object, in particular its picture, and to directly establish a communication connection, such as a telephone connection.
  • URI Uniform Resource Identifier
  • the call recipient (second telecommunication subscriber) would like to transfer the caller's data object to his telecommunication device, in which case he uses the reference information to determine the data provision component (ie the reference information is used to determine which data provision component or in which memory area there) signals that the data provision component does the first tele— data object assigned to communication participants is to be transmitted to the second telecommunications device.
  • the data preparation component transmits the data object to the second telecommunication device so that the latter can receive and play the data object.
  • the term “play” in relation to an image or text contained in the data object means that these are displayed and, with regard to sound information or a ring tone stored in the data object, means that this is made audible by the second telecommunication device.
  • the method just described makes it possible for both the caller and the called telecommunication subscriber to have control over the data object provided by the caller.
  • the second telecommunication subscriber If the second telecommunication subscriber has now played the data object of the first telecommunication subscriber, in particular, has its picture displayed, he can decide to accept the call from the first telecommunication subscriber and to establish a communication connection or (bidirectional) voice connection to the latter.
  • the telecommunication network has a first subnetwork to which the first telecommunication device is assigned and a second telecommunication network to which the second telecommunication device is assigned, the two subnetworks being connected to one another via a switching component, a so-called “gateway” are.
  • the two subnetworks but also the entire telecommunications network, can be designed as a mobile radio network which operates, for example, according to the GSM (Global System for Mobile Communication) standard or the UMTS (Universal Mobile Telecommunications system) standard.
  • GSM Global System for Mobile Communication
  • UMTS Universal Mobile Telecommunications system
  • the switching component is designed to carry out the steps of the telecommunications network listed above (such as the step of storing the data object and transmitting a call signaling message).
  • the data provision component is arranged in a network based on an Internet protocol, which is connected to the switching component.
  • the data object it is possible for the data object to be transmitted from the switching component to the data supply component via the "Hyper Text Transfer Protocol" (http).
  • the second telecommunication device is in a communication session according to the "Session Initiation Protocol" SIP during the establishment of the connection, with the aid of which interactive multimedia communication sessions can be initiated and controlled.
  • SIP Session Initiation Protocol
  • telephone calls with additional transmission of data objects, such as multimedia information can be initiated.
  • the telecommunications network or the switching component can send a so-called SIP "INVITE" message to the second telecommunications device as a call signaling message in order to invite it to a communication session.
  • the reference information relating to the storage location of the data object of the first telecommunication subscriber is also inserted into the INVITE message.
  • the data object can now be requested from the second telecommunication device using the reference information.
  • Such data transmitted before the actual communication session is also called “early data” or “early media” in connection with SIP.
  • a communication link can also be set up between a telecommunications device that does not support the SIP protocol and a telecommunications device that supports the SIP protocol.
  • the first and / or second telecommunication device is designed as a mobile radio device, mobile telephone or a computer, such as a PDA (Personal Digital Assistant) or organizer, with a radio module.
  • a mobile radio device mobile telephone or a computer, such as a PDA (Personal Digital Assistant) or organizer, with a radio module.
  • PDA Personal Digital Assistant
  • a telecommunication arrangement which comprises a first and a second telecommunication device as well as a telecommunication network.
  • the first telecommunication device is designed to establish a communication connection, in particular a telephone connection, to the second telecommunication device via the telecommunication network according to a method described above.
  • FIG. 1 shows a block diagram of a telecommunication arrangement to explain the establishment of a communication link between two telecommunication devices which are in a communication session in accordance with the SIP protocol;
  • FIG 2 is a flowchart of the establishment of a communication link between the telecommunications devices shown in Figure 1;
  • FIG. 3 shows a block diagram of a telecommunication arrangement according to a first embodiment of the invention to explain the establishment of a communication link between a telecommunication device that supports the SIP protocol and a telecommunication device that does not support the SIP protocol.
  • FIG. 4 shows a flowchart to illustrate the establishment of a communication connection of the telecommunication devices shown in FIG. 3;
  • FIG. 5 shows a block diagram of a telecommunication arrangement according to a second embodiment of the invention to illustrate the establishment of a communication link between a telecommunication device that does not support the SIP protocol and a telecommunication device that supports the SIP protocol;
  • FIG. 6 shows a flowchart to explain the establishment of a communication connection between the telecommunication devices shown in FIG. 5.
  • Interactive multimedia communication sessions can be initiated and controlled using the SIP protocol.
  • communication connections such as telephone connections or telephone calls with additional transmission of multimedia information
  • SIP protocol a first subscriber can invite a second subscriber to a session or "session" with the so-called SIP message "INVIIE”.
  • the second subscriber can then accept the invitation (in order to have the communication connection established, such as a telephone call), by replying with the so-called SIP message "200-OK".
  • the "200-OK" message can already be used to transmit data objects, such as multimedia data.
  • Such data is also referred to as "early data” or "early media”.
  • the early data can also be image data or images that are assigned to or represent the caller.
  • a special form of transmission of data objects consists in the transmission of reference information or image reference information which refer to the location at which the actual image content can be found or is stored.
  • the SIP protocol also supports the option of sending the objects or contents by reference information instead of transporting the actual data objects or image contents via the SIP protocol. This mechanism is called "Content Indirection".
  • the telecommunication devices can be, for example, cell phones.
  • the telecommunication devices can be, for example, cell phones.
  • 1 shows a block diagram of the most important components when establishing the communication connection from a first mobile telephone T1 to a second mobile telephone T2, both of which support the SIP protocol.
  • a SIP message "INVITE” which is transmitted from the calling mobile phone T1 to the called mobile phone T2, also transmits a reference BR to an image of a telecommunications subscriber assigned to the first mobile phone T1.
  • the second mobile telephone 12 in the connection establishment phase requests the image content or the image associated with the reference by means of a message BA actual image from a data provision component in this case an image server BS, and receives the image BI by means of a message ZN.
  • a data provision component in this case an image server BS
  • the first cell phone T1 invites the second cell phone T2 by means of the SIP message "INVITE" to set up a communication connection or to set up a communication session.
  • the first cell phone T1 indicates that it supports "Content Indirection”.
  • a reference BR to an image to be displayed on the second mobile phone is also transmitted as part of the "early media”.
  • the URI could be: "http: Wwww.mysite.
  • the second mobile telephone T2 uses an image request message BA with the aid of the transmitted reference BR to request the image from the data provision component or the image server BS.
  • the image BI is requested via http (Hyper Text Transfer Protocol) from the web server of the data preparation component BS with the Internet address: "w .my ite.org" and the second one by means of a delivery message ZN Mobile phone T2 is sent.
  • the image BI is then shown on a display (not shown) of the mobile telephone T2, so that the telecommunication subscriber assigned to the second mobile telephone T2 can see the call image of the first telecommunication subscriber and thus knows who the call is coming from.
  • an acoustic signal in the form of a so-called ring tone is also emitted by the second mobile telephone T2, which is also intended to acoustically inform the second telecommunications subscriber that the first telecommunications subscriber a call comes in.
  • the second cell phone T2 answers the INVITE invitation message with the provisional response (“Provisional Response”) 180-R, which indicates that the second cell phone is “ringing”.
  • the telecommunication subscriber of the second mobile telephone T2 can now decide whether or not to accept the call from the first subscriber.
  • the second telecommunication subscriber or the second cell phone T2 accepts the call and confirms this with the SIP response 200-OK, which the second cell phone sends to the first cell phone.
  • the first mobile telephone T1 now also confirms the receipt of the 200-OK message with the ACK message.
  • FIGS. 3 and 4 in which a method for establishing a communication connection according to a first embodiment of the present invention is described.
  • FIG. 3 a block diagram of the essential components for establishing a communication connection between two telecommunication devices, in particular mobile telephones T1 and T2, is shown.
  • a telephone connection (as a communication connection) is now to be set up from a first telecommunication device T1 in the form of a cell phone via a telecommunication network (represented here by the components GW, TN1, TN2) to a second telecommunication device T2 in the form of a cell phone ,
  • the telecommunications network in this case comprises two subnetworks, the first subnetwork TN1 being assigned to the first mobile telephone T1 and the second subnetwork TN2 being assigned to the second mobile telephone T2.
  • the two subnetworks are finally connected to one another via a switching component or a "gateway" GW.
  • a data provision component here in the form of an image server BS, which is located in one on one internet protocol-based network and is connected to the gateway GW, for example, via an http protocol.
  • the first mobile phone T1 is in a communication session according to the SIP protocol or supports the SIP protocol, while the second mobile phone T2 does not support the SIP protocol.
  • the mobile telephone T2 is not able to support the "content direction" mentioned above, but is able to do so in a different way, for example by means of instantaneous message (s) ("instant message”) To receive images or data objects.
  • s instantaneous message
  • image or image data is chosen here only as an example and can generally refer to data objects which can generally contain multimedia content such as ringtones, texts or text files or images.
  • the first mobile telephone T1 now transmits a connection setup message via the first subnetwork TN1 to the gateway GW. This is done using the SIP message INVITE, for which purpose a corresponding INVITE message is sent from the first mobile phone to the gateway.
  • the SIP communication started by the first mobile phone T1 is not passed on directly to the mobile phone T2 through the telecommunication network, but this is converted by the gateway GW into a corresponding signaling of the second telecommunication network or Telephone network TN2 implemented by T2. Only the implemented signaling is then forwarded to the second cell phone T2 ben, while the SIP dialogs are only between the first mobile phone Tl and the gateway GW.
  • an image of the first telecommunication subscriber is also sent from the first mobile telephone T1 to the second mobile telephone T2 by means of "Content Indirection" or by means of a reference BR.
  • the gateway GW now processes the reference BR in order to request the corresponding image from the image server BS using this reference. This is done by means of the image request message BA, in response to which the image server BS sends the actual image or the actual image content BI to the gateway using an image delivery message BN (identified by a double arrow).
  • the communication between the gateway GW and the image server BS takes place via http.
  • the image BI transmitted by the image server BS is now transmitted to the second mobile telephone T2 as part of a call signaling message AR.
  • the image BI is now on a excellent- direction of the second mobile telephone T2 are displayed during the awakening of attention associated with the second mobile phone second party a ringtone bring ⁇ plays.
  • the gateway answers the INVITE message shown above with the provisional response ("Provisional Response") 180-R to inform the caller that the image BI corresponding to the image reference BR has been transmitted to the second mobile phone or that it "rings" there.
  • the gateway GW transfers this call acceptance or confirmation into a SIP confirmation message 200-OK. sets and sends this message to the first mobile phone Tl. Finally, the first mobile telephone T1 confirms this message 200-OK again with the confirmation message ACK, so that now the communication connection or telephone connection between the first mobile phone and the second mobile phone is established.
  • FIGS. 5 and 6 a second embodiment of the invention for establishing a communication connection or telephone connection from a first mobile phone to a second mobile phone is shown. It is characteristic of this embodiment that, in contrast to the first embodiment, the first mobile telephone T1 does not now support the SIP protocol, while the second mobile telephone T2 supports the SIP protocol. It should again be mentioned that the first mobile telephone T1 is not able to support the "content direction" mentioned above, but in a different way, for example by means of an instantaneous message (s) (“instant message”) ”) is able to receive images or data objects.
  • s instantaneous message
  • FIG. 5 a block diagram with the essential components for establishing a communication connection according to the second embodiment is shown.
  • the telecommunication arrangement comprises a first telecommunication device in the form of a mobile telephone T1, which would like to set up a communication connection or telephone connection to a second telecommunication device in the form of a mobile telephone T2 via a telecommunication network (represented by the components GW, TN1, TN2).
  • a telecommunication network represented by the components GW, TN1, TN2.
  • the telecommunications network should have two
  • the gateway is provided with a data supply component or an image server BS verbun ⁇ , on the data objects, in particular images comprising overall stores are.
  • a connection setup message AR2 is first sent from the first mobile phone T1 to the gateway GW according to FIG.
  • the communication is not passed on directly from the first subnetwork TN1, which is assigned to the first mobile phone, directly to the second subnetwork TN2, which is assigned to the second mobile phone, but rather that Gateway GW serves as an interface and converts the signaling of the first subnet into a SIP signaling for the second subnet. SIP dialogs are then only conducted between the gateway GW and the second subnet or the second mobile phone.
  • the gateway After receiving the connection setup message AR2, which also contains an image BI of the telecommunication subscriber assigned to the first mobile telephone, the gateway converts the image into a SIP context or SIP signaling by using the image or sends the image content BI to the image server BS using an image storage message BSN.
  • the image server can be located in a network based on an Internet protocol, the image server BS being connected to the gateway GW via an http protocol. The image BI can then be sent to the image server via http and deposited or stored there.
  • the gateway GW uses an INVITE message to invite the second mobile phone T2 to a communication session or "session", ie the INVITE message represents a call signaling message sent to the second mobile phone T2 indicates that a first subscriber or his assigned first mobile phone T1 wants to establish a communication connection or telephone connection.
  • An image reference BR is also entered in the INVITE message. inserts that specifies the location at which the image BI associated with the image reference is stored (here as mentioned above with the image server BS).
  • the subscriber assigned to the second mobile phone T2 is given an acoustic signal by the second mobile phone, for example in the form of a ring tone, which is based on the incoming call points.
  • the second mobile telephone T2 now requests the image assigned to the image reference from the image server BS by means of an image request message BA using the image reference BR.
  • the image server BS transmits the image BI associated with the image reference to the second mobile telephone T2 by means of a delivery message ZN.
  • the image of the first telecommunications subscriber can thus be displayed to the second telecommunications subscriber as a call image by the second mobile telephone.
  • the playback of an acoustic signal such as a ring tone can be played back with the image BI either directly after the INVITE message has been received by the second mobile phone or after the delivery message ZN has been received.
  • Provisional Response 180-R is sent from the second mobile phone T2 to the gateway GW (as a confirmation of this that the second mobile phone has received the call signaling and that the second subscriber is informed, for example by an acoustic signal).
  • the gateway GW After the second subscriber has been informed of the call from the first subscriber, he can either accept or reject the call. If he decides to accept the call, he notifies the second cell phone T2 of this via a corresponding user interface, whereupon the second cell phone T2 accepts a call. gets 200-OK to the gateway. This (positive) answer is finally converted into a confirmation by the gateway GW, which is then forwarded to the first mobile telephone T1 in the form of an acceptance information message AA. Accordingly, the gateway GW also confirms the call acceptance message
  • the telecommunications network connecting the two mobile telephones T1 and T2 can operate, for example, in accordance with the GSM (Global System for Mobile Communication) standard or the UMTS (Universal Mobile Telecommunications System) standard ,
  • an image does not necessarily have to be stored in the first mobile phone (in the caller's mobile phone) and sent with a connection setup message to the telecommunications network or gateway GW, but that the call picture assigned to a caller or first subscriber can already be stored in the telecommunications network, in the case of a mobile radio network, for example in the HLR (Home Location Register) and from there via the gateway GW to an image server when a call is made or communication is established - Connection is transmitted.
  • HLR Home Location Register
  • the transmission of images or data objects from the called party to the caller can take place following an above-described method or as an independent method.
  • the called party can send a data object assigned to him in a message to the telecommunications network in response to a call signaling message from a caller, the data object then being sent through the telecommunications network is stored on a data provision component.
  • a response message (connection setup message) is transmitted from the telecommunications network to the caller, reference information being provided in the response message, which indicates the data preparation component on which the data object called is stored.
  • the data supply component is signaled from the caller or his telecommunication device using the reference information that the data supply component transmits the data object assigned to the called party to the second telecommunication device.
  • the data object is then transmitted from the data preparation component to the caller and played there or displayed (in the case of an image).
  • the called party can store a data object on a data provision component.
  • the called party or its telecommunications device In response to the call signaling message from the telecommunications network, the called party or its telecommunications device sends a message to the telecommunications network with image reference information which indicates the data object stored in the data preparation component. This signals the data providing component using the reference information that the data providing component transmits the stored data object to the telecommunications network. The data provision component then transmits the data object to the telecommunications network. Finally, a response message is transmitted from the telecommunications network to the caller, the transmitted data object of the called party being provided in this message. The transferred data object can then be played or displayed at the caller.
  • the basic idea of the two embodiments shown in FIGS. 3 to 6 is to create an architecture and signaling for call images, which are conventionally used by SIP protocol-supporting telephones via "content identification" "can now be exchanged between SIP-supporting phones and non-SIP-supporting phones.
  • the call picture of a non-SIP-supporting calling telephone is stored in the telecommunications network and a reference to the stored image is sent to the called SIP-supporting telephone.
  • a SIP-supporting telephone it is advantageous for a SIP-supporting telephone that it does not have to transmit the actual image content, even if the SIP-supporting telephone sends the image (in the form of a reference). This means that fewer transmission resources are required.
  • a very flexible way of providing images is permitted. Images can be provided according to all forms of supported URI (for example, the images can be provided via http).

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  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé pour établir une communication entre un premier appareil de télécommunication (T1) et un deuxième appareil de télécommunication (T2) par intermédiaire d'un réseau de télécommunication (GW). Selon invention, une architecture et une signalisation sont créées pour transmettre des images d'appel au deuxième appareil de télécommunication. Le procédé de l'invention est particulièrement adapté pour établir une communication avec transmission d'images d'appel entre des téléphones équipés pour des protocoles d'ouverture de cession (SIP) et des téléphones non équipés pour des protocoles d'ouverture de cession.
PCT/EP2004/052510 2003-11-10 2004-10-12 Procede pour etablir une communication WO2005046264A1 (fr)

Applications Claiming Priority (2)

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DE10352379A DE10352379A1 (de) 2003-11-10 2003-11-10 Verfahren zum Aufbauen einer Kommunikationsverbindung
DE10352379.0 2003-11-10

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