Abstract: A system for unified communication, according to one embodiment of the present invention, comprises a CAS communicatively coupled to a client. The CAS comprises a server communicatively coupled to a CAS application and a number of service providers. The server receives from the client a CAS message encoded in a CAS format and including a request for a unified communication service. The server communicates with the CAS application to determine a service type for the request. The server sends the request to one of the number of service providers. The server sends a reply message to the client.

Abstract: A unified communication server or Client Application Server (CAS) comprises a client communication module, a status determination module, an operation determination module, an object manager, and a permissions module. The CAS enables communication between a client device and a plurality of communication services. The CAS receives requests for services from the client devices. The CAS interacts with a plurality of service providers offering different functionality and responds to requests or provides listings of available services in a unified manner despite the service offerings and service providers being disparate. The present invention also includes a number of methods including a method for operating a unified communication server, a method for generating a list of possible operations, a method for determining the status of a user and a method for determining permissions of a user.

Abstract: A system for unified communication, according to one embodiment of the present invention, comprises a CAS communicatively coupled to a client. The CAS comprises a server communicatively coupled to a CAS application and a number of service providers. The server receives from the client a CAS message encoded in a CAS format and including a request for a unified communication service. The server communicates with the CAS application to determine a service type for the request. The server sends the request to one of the number of service providers. The server sends a reply message to the client.

Abstract: A system for providing enhanced history information across multiple clients comprises a call application server having a history system, a telephony system and a history cache. The call application server advantageously maintains a history records for each user of the system. The enhanced history system is particularly advantageous because regardless of the endpoint (e.g., phone, thin client, personal call manager or standalone IP phone) with which the user is interacting, the history information specifically for that user is delivered by the call application server to that endpoint. Furthermore, the call application server allows the user to access history information using end points which heretofore were unable to provide history functionality. Finally, the call application server makes the history records universal across all endpoints with which the user interacts, in contrast to prior art, which had limited call history information specific to a particular endpoint.

Abstract: A system for providing enhanced history information across multiple clients comprises a call application server having a history system, a telephony system and a history cache. The call application server advantageously maintains a history records for each user of the system. The enhanced history system is particularly advantageous because regardless of the endpoint (e.g., phone, thin client, personal call manager or standalone IP phone) with which the user is interacting, the history information specifically for that user is delivered by the call application server to that endpoint. Furthermore, the call application server allows the user to access history information using end points which heretofore were unable to provide history functionality. Finally, the call application server makes the history records universal across all endpoints with which the user interacts, in contrast to prior art, which had limited call history information specific to a particular endpoint.

Abstract: A system for providing enhanced history information across multiple clients comprises a call application server having a history system, a telephony system and a history cache. The call application server advantageously maintains a history records for each user of the system. The enhanced history system is particularly advantageous because regardless of the endpoint (e.g., phone, thin client, personal call manager or standalone IP phone) with which the user is interacting, the history information specifically for that user is delivered by the call application server to that endpoint. Furthermore, the call application server allows the user to access history information using end points which heretofore were unable to provide history functionality. Finally, the call application server makes the history records universal across all endpoints with which the user interacts, in contrast to prior art, which had limited call history information specific to a particular endpoint.

Abstract: A system for providing enhanced history information across multiple clients comprises a call application server having a history system, a telephony system and a history cache. The call application server advantageously maintains a history records for each user of the system. The enhanced history system is particularly advantageous because regardless of the endpoint (e.g., phone, thin client, personal call manager or standalone IP phone) with which the user is interacting, the history information specifically for that user is delivered by the call application server to that endpoint. Furthermore, the call application server allows the user to access history information using end points which heretofore were unable to provide history functionality. Finally, the call application server makes the history records universal across all endpoints with which the user interacts, in contrast to prior art, which had limited call history information specific to a particular endpoint.