Abstract: The present invention relates to a photocatalyst nanomaterial comprising a solid substrate and a metal oxide/oxyhydroxide arranged on the solid substrate forming a coating having a thickness comprised between 1 nm and 1 micrometer and having an amorphous structure. The invention also relates to a nanometric coating which comprises the described photocatalyst material and metallic nanoparticles, as well as to the method for obtaining the catalyst material, to the use of the catalyst material as a photocatalyst in the ultrafast synthesis of metallic nanoparticles, and to the use of the nanometric coating in the manufacture of optical sensors, biocidal coatings and elimination of reactive oxygen species.

Abstract: A method for processing messages by a device of a Voice over IP (VoIP) network. The method includes, following receipt of a message initiating a VoIP call coming from a terminal: determining whether the message contains a public telephone identity allocated to a user by the VoIP network; if so, triggering setting-up the VoIP call with a recipient of the message; otherwise: setting up a VoIP channel between the terminal and a voice server hosted by the device; obtaining, by the server via this channel, an authentication code of a user of the terminal; if the authentication code is associated at VoIP network level with a public telephone identity allocated by the network to a user, providing to the terminal the public telephone identity and authentication data associated at VoIP network level with this identity for making VoIP calls and being authenticated to the VoIP network.

Abstract: A method is provided of managing calls in a voice over IP network, and is performed by a SIP proxy. The method includes receiving a registration request issued by a voice over IP terminal to register with the SIP proxy, obtaining from a database the address of at least one voice over IP platform associated with the voice over IP terminal, registering the SIP proxy with a said voice over IP platform, and sending a request to a number portability server suitable for managing incoming calls to said voice over IP terminal, the request requesting the server to associate the telephone number of the voice over IP terminal with a routing prefix associated with the voice over IP platform.

Abstract: A method for processing messages by a device of a Voice over IP (VoIP) network. The method includes, following receipt of a message initiating a VoIP call coming from a terminal: determining whether the message contains a public telephone identity allocated to a user by the VoIP network; if so, triggering setting-up the VoIP call with a recipient of the message; otherwise: setting up a VoIP channel between the terminal and a voice server hosted by the device; obtaining, by the server via this channel, an authentication code of a user of the terminal; if the authentication code is associated at VoIP network level with a public telephone identity allocated by the network to a user, providing to the terminal the public telephone identity and authentication data associated at VoIP network level with this identity for making VoIP calls and being authenticated to the VoIP network.

Abstract: A method for updating a database of a Voice over IP network by a gateway of a local network allowing access to the VoIP network. The method includes: receiving a message to initiate a VoIP call on the VoIP network coming from a terminal connected to the local network; determining a hardware identifier of the terminal from an IP address on the local network contained in the message; if the identifier is paired in the database with a telephone identity, transferring the message to the VoIP network; otherwise: setting up a VoIP channel between the terminal and a voice server hosted by the access gateway; obtaining by the voice server, via this channel, an authentication code of a user of the terminal; if the code is associated with a telephone identity allocated by the VoIP network, updating the database by pairing the identifier of the terminal with this telephone identity.

Abstract: A method is provided of managing calls in a voice over IP network, and is performed by a SIP proxy. The method includes receiving a registration request issued by a voice over IP terminal to register with the SIP proxy, obtaining from a database the address of at least one voice over IP platform associated with the voice over IP terminal, registering the SIP proxy with a said voice over IP platform, and sending a request to a number portability server suitable for managing incoming calls to said voice over IP terminal, the request requesting the server to associate the telephone number of the voice over IP terminal with a routing prefix associated with the voice over IP platform.