Abstract: A system, method and computer readable medium for presence driven communication contacts of presentities in a presence server in a presence system comprises searching a relational directory for a sought individual, scanning the relational directory for at least one individual associated with the sought individual, determining a presence state of the sought individual, and discovering a presence state of the associated individual if the sought individual is unavailable.

Abstract: Scalable presence distribution system and method are described. In one embodiment, a presence distribution system comprises a plurality of presence servers and a centralized management function for coordinating registration of a presentity with one or more of the plurality of presence servers.

Abstract: A dynamic contact list management (DCLM) method and system operable in a communications network environment. In one embodiment, upon receiving a communication request from an originating party over a first network towards a networked party, a query is generated for determining and locating an IM address associated with the originating party. Upon establishing presence awareness between the originating party and the networked party, the IM address of the originating party is added to a contact list database associated with the networked party. The IM address, which is persistent at least for the duration of a first communication session established responsive to the communication request, may be used for engaging in a second communication session between the parties.

Abstract: Apparatus, and an associated method, for paging a mobile station operable in a WLAN. Logical layer-2 paging is provided pursuant to a tracking agent protocol. A tracking agent is provided that tracks the location at a logical layer-2 logical level. A paging cache is maintained that identifies logical layer-2 paging areas in which the mobile station is most recently associated. When a communication session is initiated, a page is broadcast throughout the layer-2 logical layer paging area in which the mobile station is indicated to be positioned.

Abstract: An IPTV system architecture has an IPTV system and an edge service router connected to the IPTV system. The IPTV system is configured for facilitating delivery of IPTV content dependent upon commands formatted in accordance with a communications protocol supported by the IPTV system. The edge service router is coupled to the IPTV system and includes an IPTV Gateway apparatus. The IPTV Gateway apparatus is configured for receiving commands issued by IPTV subscriber networking devices for affecting IPTV content delivered thereto, for translating the commands from a format in accordance with a communications protocol not supported by the IPTV system to the supported communications protocol, and for providing the translated commands to the IPTV system.

Abstract: In a network having one or more Audio Video Bridging (AVB) devices, non-AVB bridges are detected by transmitting a maintenance message, such as a unicast linktrace message, from one AVB device such as a residential gateway to another AVB device such as a set-top box or IPTV. AVB devices in the path provide replies indicating whether the port on which the linktrace message was received is connected to a non-AVB bridge. The disclosure has utility in diagnostics problems with IPTV in a network.

Abstract: Traffic through a bridge or other network device is directed in a manner that enables link aggregation and other layer-2 protocols to operate fully, even though the device may have as few as a single bidirectional link, with the remaining links being unidirectional. The protocol stack logic of the network device includes shim logic that receives traffic and processes it to determine to where it is to be directed.

Abstract: A method, system, and computer readable medium of inserting advertisement media content into an Internet Protocol Television (IPTV) system comprises providing media content to a user comprises receiving a first multicast stream containing a first media content at a set top box, displaying the first media content on a display, transmitting a unicast request from the set top box to a remote location in response to a television channel change operation, receiving a second multicast stream containing a second media content at the set top box in response to the unicast request, the second multicast stream including at least one I-frame, and displaying the second media content on the user's display in real-time in response to receiving the at least one I-frame.

Abstract: A method, computer readable medium, and system for advertisement and content distribution are provided. Supplementary content is synchronized with advertisement slots, or commercial intervals, of a program stream and distributed via separate multicast group addresses. The program content is distributed via an alternative multicast group address during commercial intervals. Ports associated with respective users are mapped or otherwise associated with multiple multicast group addresses in a forwarding table thereby allowing distribution of supplementary content, or alternatively the program content, during commercial intervals.

Abstract: A presence system enables retrieval of calendar presence information of presentities from calendar servers using a calendar agent and calendar interfaces to the calendar servers. Each calendar server maintains calendar schedule information for one or more of the presentites. The calendar agent is operable to generate queries for the calendar schedule information to the calendar servers via a respective calendar interface for each calendar server. The calendar agent is further operable to receive calendar schedule information from the calendar servers via the respective calendar interfaces, and to convert the received calendar schedule information into calendar presence information. Each calendar interface is configured to communicate with the calendar agent via a first protocol and to communicate with a respective one of the calendar servers via a respective second protocol.

Abstract: A diversification route (Connection-B) is generated after establishing a first path (Connection-A) through the network (10) between an ingress client node (12) and an egress client node (14) through a first ingress network element (16) within the optical network. Information identifying the first network element is passed by the ingress client node (12) to a second network element (18) in the network. Information identifying the first path and desired diversity type is passed from the second network element (18) to the first network element (16). In response to receiving the information identifying the first path, an entity list associated with the first path is passed from the first network element (16) to the second network element (18). The second path (Connection-B) is established responsive to the information associated with the first path (Connection-A).

Abstract: A diagnostic tool for identifying priority errors within a data network is realized using a priority trace data packet. The priority trace data packet is originated at an originating node of interest and terminated at a terminating node of interest. At various intermediate network nodes along the data path between the originating and terminating nodes, the priority trace packet is inspected to determine the current priority value of the priority trace packet. The current priority value is stored in a priority trace field that can be analyzed by a network management node to identify one or more sources of priority errors.

Abstract: Apparatus, and an associated method, for facilitating performance of multi-media, and other communication, services at an Ethernet network. A bridge provides communication control operations at the Ethernet network. Audio-video bridge domains are defined at the network. Service discovery messages generated by communication devices of a particular domain are forwarded only to other communication devices of the same domain. Redefinition and reconfiguration of the domains is made, as needed, all best to facilitate performance of the communication service.

Abstract: A method and an Ethernet local area network are described herein in which the Ethernet local area network is configured to enable a talking device (e.g., microphone) to send a media stream to one or more listening devices (e.g., speakers). In one embodiment, the method for configuring the Ethernet local area network includes the following steps: (1) providing a user of a talking device with a “relevant” catalog which contains information including positional information about one or more listening devices; (2) allowing the user to interface with the “relevant” catalog so they can select at least one of the listening device(s); (3) enabling the talking device to send a subscribe-request message to the selected listening device(s) requesting that the selected listening device(s) subscribe to the talking device; (4) and sending a media stream from the talking device to the selected listening device(s).

Abstract: Precision Time Protocol (PTP) emulation service for a data communication network of a type that is adapted to support circuit emulation services (CES). The PTP emulation service enables seamless PTP-style clock synchronization over such a network using any combination of legacy switches, PTP boundary switches and PTP switches. The PTP emulation service is delivered through the expedient of external PTP emulation devices that are associated with legacy switches and PTP boundary switches.

Abstract: An operation is performed for executing a plurality of first-level queries. Execution of each first level query determines if a respective type of operational condition exists within a network. If needed due to the quantity of first-level queries, the first-level queries are executed in a sampled manner such that less than all of the first-level queries are applied to a specified collection of network elements of the network during each one of a plurality of instances of executing the first-level queries being performed and such that all of the first-level queries are applied to the specified collection of network elements in accordance with a prescribed query execution timeframe. An operation is performed for executing a second-level query in response to one of the first-level queries determining that the respective type of operational condition exists within the network.

Abstract: Disclosed herein are techniques by which a Layer-2 entity determines whether a mobile terminal requesting association or reassociation therewith determines whether the requesting mobile terminal shall continue using its current IP address or whether it requires a new IP address. The Layer-2 entity makes this determination based upon an examination of the contents of the association or reassociation request message received thereby. Contained in the association or reassociation reply message returned by the Layer-2 entity shall either be an instruction, to the mobile terminal, to continue using its current IP address or a new IP address to be used, by the mobile terminal in place of its current IP address.

Abstract: Apparatus, and an associated method, for facilitating registration of a mobile node with a home agent. Dormant mode operation of the mobile node is supported. Message generators positioned at the mobile node generate appropriate messages for a UMTS and a WLAN network. The messages include indicia identifying the home agent associated with the mobile node. Apparatus positioned at separate network portions of the communication system form registration proxies for performing the registration of the mobile node with the home agent.

Abstract: A hierarchical wireless network is comprised of two levels, a first level configured for wired coupling to an IP network and comprised of a gateway configured for wired coupling to the IP network, a WiARP server and a data store; and a second level, wired to the first level by a distribution system, and comprised of at least two access points, each configured for wireless association with a respective plurality of mobile stations and having a WiARP proxy residing therein. For each mobile station associated with the second level, the WiARP server maintains an IP address of the mobile station and a MAC address for the access point with which the mobile station is associated. Conversely, each WiARP proxy maintains, on behalf of the associated access point, IP and MAC addresses for each mobile station associated therewith.

Abstract: A lightpath segmentation system and method for use in a GMPLS network is described. In one embodiment, lightpaths are divided into segments according to the distribution of the wavelength-converter-equipped optical switches, or nodes, within a WDM network. As the number of hops within the segment increases, a lightpath segmentation probability increases. When a wavelength-converter-equipped node receives an LSP Request message, it calculates the LPSP and, if the LPSP exceeds a threshold, the node sets up a lightpath between itself and the ingress node or a previous upstream wavelength-converter-equipped node, if the lightpath has already been segmented.