Abstract: An application distributed amongst plurality of computing devices leverages an application programming interface that conforms to a representational state transfer architecture in order to provide resilient services to clients and adapt to a change in availability of devices. A proxy server routes communications between clients and servers, detects when a server becomes unavailable, and reroutes communications to a replacement server. A registration database on the proxy server records entries for clients, such that communications can be routed to active devices of a user.

Abstract: Techniques for remote presence subscription are described. In an embodiment, a technique may include presenting a view interface to a client, where the client user may select what kind of presence information, and for whom, they would like to receive. The techniques may further comprise receiving a selection of presence data through the view interface from the client; creating a view from the selection at a web service; translating the view into a request having a protocol useable by a presence server to retrieve information for the view; requesting and receiving the information for the view using the request; and providing the information for the view to the client. Other embodiments are described and claimed.

Abstract: Subscribers and endpoints of enhanced multimodal communication systems are enabled to direct call requests and escalations during an existing conversation based on capabilities of endpoints. A list of communication mode/endpoint identifiers are exchanged when a conversation is established, enabling the endpoints to direct requests to for particular communication modes to endpoints capable of facilitating the communication mode at any point during the conversation. Additional capabilities/endpoints are added to the list through updates during the conversation.

Abstract: Architecture that facilitates the formalization of contracts across multiple points of presence of a given user so that the multiple presence points can harmoniously publish presence. Enhanced presence publishing rules are formalized as a contract by all the endpoints of a given infoworker. An infoworker can signed on from different releases of software endpoints and to have a consistent presence experience. The infoworker can modify the publishing rules contract in a discoverable fashion by the other infoworker software endpoints. A container contract is provided having default container memberships (presence levels) and static publications. The rules associated with setting and verifying consistency of the default presence store container memberships (presence levels) is formalized. Additionally, the rules associated with making static publications at first time software endpoint registration and verifying consistency of the static publications at subsequent endpoint bootstrapping are formalized.

Abstract: An extensible communication framework is presented that provides a standard, reusable implementation of common code for adding new modes of communication to a unified communications application. The framework loosely couples the signaling and media plane of unified communications to enable the two planes to be separated onto different computer systems or processes and to allow application writers to extend only the portion where they want to add new functionality. Thus, the extensible communication framework provides flexibility without excessive complexity.