Abstract: A method for providing congestion management within a virtual talk group includes facilitating communication within a virtual talk group between a plurality of endpoints of different communication networks. The method also includes monitoring a communication congestion level within the virtual talk group and tracking at least one priority characteristic for at least one endpoint of the plurality of endpoints within the virtual talk group. The method further includes detecting that the communication congestion level exceeds a congestion threshold and reducing the congestion level by executing at least one policy based on the at least one priority characteristic of the at least one endpoint.

Abstract: In one particular embodiment, surveillance information is determined from a surveillance system. The surveillance information provides information on an event being monitored by the surveillance system. It is determined if a virtual talk group should be created for the event. If so, the virtual talk group is created such that a plurality of users in the virtual talk group can communicate with each other in the virtual talk group.

Abstract: A method for managing a plurality of virtual talk groups includes forming a first virtual talk group associated with a first endpoint. The first virtual talk group includes the first endpoint and a second endpoint. The second endpoint is associated with a first function. The method also includes facilitating communications between the endpoints of the first virtual talk group. The method also includes, upon a change in a function of the first endpoint from the first function to a second function, receiving a request to add a third endpoint to the first virtual talk group. The third endpoint is associated with the second function. The method also includes adding the third endpoint to the first virtual talk group and removing the second endpoint from the first virtual talk group after the third endpoint has been added to the first virtual talk group for a first amount of time.

Abstract: A method for joining a virtual talk group includes facilitating communications of a virtual talk group. The virtual talk group includes a plurality of endpoints of different communication networks. The method also includes recording the communications of the plurality of endpoints of the virtual talk group. The method also includes adding a first endpoint to the virtual talk group and presenting the first endpoint with the recorded communications of the plurality of endpoints of the virtual talk group.

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.