# US 9,882,939 B2 · System and method for providing multimedia services > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,882,939 B2 - Document ID: US9882939B2 - Status: Granted - Kind: B2 - Application number: 14/799,512 - Filed: 2015-07-14 - Published: 2016-01-28 - Granted: 2018-01-30 - Earliest claimed: 2005-09-29 - Assignees: Comcast Cable Communications, LLC - Applicants: Comcast Cable Communications, LLC - Inventors: Veeru N. Ramaswamy; Franklyn Athias - Web page: https://patentgrep.com/patent/US9882939B2 ## CPC - H04L 65/1016: IP multimedia subsystem [IMS] - H04L 65/1094: Inter-user-equipment sessions transfer or sharing - H04L 12/2856: {Access arrangements, e.g. Internet access (asynchronous transfer mode networks H04L12/5601; broadband local area networks H04L12/2801; optical access or distribution networks H04Q11/0067; access to open networks H04L12/5691; digital subscriber line end-user equipment and bit-level processing of data on a PSTN-based network H04M11/00; home network gateways H04L12/2834; wireless access networks H04W)} - H04L 65/1045: Proxies, e.g. for session initiation protocol [SIP] - H04L 65/1069: Session establishment or de-establishment - H04L 65/1073: Registration or de-registration - H04L 65/1104: Session initiation protocol [SIP] - H04L 65/1036: {at the edge} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A communications system and method is configured to provide multimedia services utilizing a signaling protocol such as a session initiated protocol (SIP), via a local access network. The method includes providing a local proxy having an internet protocol (IP) address, wherein the local proxy is integrated with the local access network. The method further includes providing a client device having a signaling protocol client, wherein the client device is coupled to a remote access network that is external to the local access network. Additionally, the method includes initiating a session by the client device accessing the IP address of the local proxy. ## Claims ### Claim 1 A method comprising: establishing a communication session with a device, wherein the device is located within a first network that is external to a second network, wherein the second network is a core network configured to transmit a multimedia service; authenticating the device at an authentication element, wherein the authentication element is located within a third network that is external to the first network and the second network; authorizing a user of the device at the second network at a request of the authentication element; and providing a service to the device from the second network. ### Claim 2 (depends on 1) The method of claim 1, wherein the authenticating the device comprises receiving a session initiation protocol (SIP) register message. ### Claim 3 (depends on 1) The method of claim 1, further comprising receiving a SIP invite message. ### Claim 4 (depends on 1) The method of claim 1, wherein the providing the service to the device comprises accessing the multimedia service transmitted by the second network. ### Claim 5 (depends on 1) The method of claim 1, wherein the authentication element is associated with an addressable identifier. ### Claim 6 (depends on 1) The method of claim 1, wherein the authentication element is associated with an internet protocol (IP) address. ### Claim 7 (depends on 1) The method of claim 1, wherein the device is a client. ### Claim 8 A communication system comprising: a computing device comprising an authentication element associated with an internet protocol (IP) address and configured to manage access to services; an authorization element within a core network, the authorization element configured to manage authorization of one or more users of one or more devices, wherein the authentication element is external to the core network; wherein the authentication element is further configured to authenticate at least one of the one or more devices and request authorization for the at least one authenticated device from the authorization element; and wherein a service is provided to the at least one authenticated device from the core network. ### Claim 9 (depends on 8) The system of claim 8, wherein the authentication element is further configured to relay messages according to a signaling protocol from the at least one authenticated device to a device of the core network. ### Claim 10 (depends on 8) The system of claim 8, wherein the authenticated device is configured to transmit a session initiation protocol (SIP) register message. ### Claim 11 (depends on 8) The system of claim 8, wherein the authenticated device is configured to transmit an SIP invite message. ### Claim 12 (depends on 8) The system of claim 8, wherein the authentication element is associated with an addressable identifier. ### Claim 13 A method comprising: receiving a request from a device through a first network that is external to a second network and a third network, wherein the device is located within the second network that is external to the first network; authenticating the device at an authentication element, wherein the authentication element is external to the third network, authorizing a user of the device at the third network at the request of the authentication element; and transmitting data to the authorized user of the device from the third network. ### Claim 14 (depends on 13) The method of claim 13, wherein authenticating the device comprises receiving a session initiation protocol (SIP) register message. ### Claim 15 (depends on 13) The method of claim 13, further comprising receiving a SIP invite message. ### Claim 16 (depends on 13) The method of claim 13, wherein the transmitting data to the authorized user further comprises initiating a multimedia session. ### Claim 17 (depends on 13) The method of claim 13, wherein the second network is a remote access network. ### Claim 18 (depends on 13) The method of claim 13, wherein the third network is a core network configured to transmit data relating to one or more multimedia services. ### Claim 19 (depends on 13) The method of claim 13, wherein the device is a client. ### Claim 20 (depends on 13) The method of claim 13, wherein the authentication element is associated with an addressable identifier.