SIP-based session control among a plurality of multimedia devices

A method for providing media delivery services comprising:

• receiving a session initiation protocol invitation from a first multimedia device to request a media stream, the invitation further comprising a first private communications address for communicating with the first multimedia device;
• communicating the session initiation protocol invitation to a multimedia content server via a communications network;
• receiving a session initiation protocol update from the multimedia content server via the communications network to access the media stream from a second multimedia device having a second private communications address;
• communicating the session initiation protocol invitation from the first multimedia device to the second multimedia device;
• wherein communicating the session initiation protocol invitation is performed by a residential gateway, wherein the residential gateway forwards the session initiation protocol invitation to a source, the source responding with the second private communications address, the residential gateway forwarding the session initiation protocol invitation to the first multimedia device for transmission to the second private communications address of the second multimedia device;
• receiving a session initiation protocol confirmation from the second multimedia device to communicate the media stream, the confirmation further comprising a communications identifier for identifying the media stream;
• and
• communicating the media stream from the second multimedia device to the private communications address of the first multimedia device;
• wherein the multimedia content server is a multicast source;
• wherein communicating the session initiation protocol invitation to the multicast source via the communications network comprises translating the session initiation protocol invitation to an internet group management protocol join and communicating the internet group management protocol join to the multicast source via the communications network and wherein receiving a session initiation protocol update from the multicast source via the communications network comprises receiving an internet group management protocol update via the communications network, the update further comprising the second private communications address of the second multimedia device.