Patent ID: 8489134

Claim:
An apparatus, comprising: a first communication resource manager located in a first domain and operable to interact with a second communication resource manager located in a second domain, wherein the first communication resource manager is configured to: determine to establish a link for multicasting between users in the first domain and users in the second domain based on presence data of at least one user in the first domain and at least one user in the second domain; determine an application to be used in a communication session over the link; allocate a bandwidth level to be used for the link to accommodate the application; increase the bandwidth level for the link based on a change in the application and based on an identification of additional presence data for additional users that have joined the communication session, wherein the communication resource managers each includes respective trunking element that is automatically configured to select a transcoding based on available bandwidth; adjust the bandwidth level based on a determination which of the additional users and the users in the first and second domains can transmit data simultaneously during the communication session; detect an absence of active users in the first domain and the second domain; and tear down the link based on the absence; wherein the link is a satellite communication link.