Abstract: A method for communicating using position information includes communicating on a first communication network at a first location using one or more first communication parameters of the first communication network and, upon moving from the first location to a second location, receiving position information identifying the second location. The method includes adjusting the one or more first communication parameters to one or more second communication parameters based on the second location and communicating on a second communication network at the second location using the one or more second communication parameters.

Abstract: Providing one or more virtual talk groups to an endpoint includes establishing one or more resources of a user endpoint. Demand of the one or more virtual talk groups is estimated, where the demand is placed on the one or more resources. Whether the one or more resources are capable of satisfying the demand is determined. At least a subset of the one or more virtual talk groups that may be presented to the user endpoint is established, if the one or more resources are not capable of satisfying the demand. At least the subset of the one or more virtual talk groups is provided to the user endpoint.

Abstract: A method for providing information about a push-to-talk communication session includes facilitating a push-to-talk communication session among a plurality of endpoints and receiving from a first endpoint of the plurality of endpoints a request for floor control comprising a request to transmit communications in the communication session. The method includes, in response to receiving the request for floor control, providing to the first endpoint a signal communication indicating a status message and that the first endpoint has been granted floor control in the push-to-talk communication session.

Abstract: Providing announcements for communication sessions includes facilitating the communication sessions among endpoints comprising a half-duplex push-to-talk endpoint. It is established that a trigger event has occurred at the half-duplex push-to-talk endpoint, where the trigger event indicates an activity status of the half-duplex push-to-talk endpoint. One or more announcements associated with the trigger event are identified. The one or more announcements are provided to at least a subset of the endpoints.

Abstract: A method for providing information about a push-to-talk communication session includes facilitating a push-to-talk communication session among a plurality of endpoints and receiving from a first endpoint of the plurality of endpoints a request for floor control comprising a request to transmit communications in the communication session. The method includes, in response to receiving the request for floor control, providing to the first endpoint a signal communication indicating a status message and that the first endpoint has been granted floor control in the push-to-talk communication session.

Abstract: Providing one or more virtual talk groups to an endpoint includes establishing one or more resources of a user endpoint. Demand of the one or more virtual talk groups is estimated, where the demand is placed on the one or more resources. Whether the one or more resources are capable of satisfying the demand is determined. At least a subset of the one or more virtual talk groups that may be presented to the user endpoint is established, if the one or more resources are not capable of satisfying the demand. At least the subset of the one or more virtual talk groups is provided to the user endpoint.