Abstract: A method and apparatus for communicating resource activation details are disclosed. A method of resource activation by a group application server may include requesting, by the group application server, establishment of a distributed resource to be established in a broadcast area and an indication of profess to establish the distributed resource, and receiving a first notification at the group application server. The first notification may be indicative of progress in the establishment of the distributed resource and may be received before the distributed resource is established in the broadcast area.

Abstract: A method and apparatus for communicating resource activation details are disclosed. A method of resource activation by a group application server may include requesting, by the group application server, establishment of a distributed resource to be established in a broadcast area and an indication of profess to establish the distributed resource, and receiving a first notification at the group application server. The first notification may be indicative of progress in the establishment of the distributed resource and may be received before the distributed resource is established in the broadcast area.

Abstract: Methods, systems and apparatus are provided for recovering registration information at a home network when the home network determines that it has experienced a loss of the registration information. The home network communicates a triggering message to at least one visited network to initiate registration information recovery, and the visited network responds to the triggering message by communicating registration information for objects that are located at the visited network and that are associated with the home network. These objects may include, for example, subscriber units and/or talk groups that are associated with the home network and have roamed to the visited network.

Abstract: Methods, systems and apparatus are provided for recovering registration information at a home network when the home network determines that it has experienced a loss of the registration information. The home network communicates a triggering message to at least one visited network to initiate registration information recovery, and the visited network responds to the triggering message by communicating registration information for objects that are located at the visited network and that are associated with the home network. These objects may include, for example, subscriber units and/or talk groups that are associated with the home network and have roamed to the visited network.

Abstract: An apparatus and method for dynamic vocoder assignment in a communication system that supports multiple vocoders includes a first step (30) of detecting changing a call environment in a group call. A next step (32) includes dynamically determining a list of vocoders in order of system preference in response to the change in call environment. A next step (34) includes communicating the ordered list of vocoders in an existing floor control message to the participants in the call. A next step (36) includes selecting, by at least the current transmitting participant, the first vocoder that it supports from the list of preferred vocoders, for use in that participant's next transmission in the group session.

Abstract: An apparatus and method for dynamic vocoder assignment in a communication system that supports multiple vocoders includes a first step (30) of detecting changing a call environment in a group call. A next step (32) includes dynamically determining a list of vocoders in order of system preference in response to the change in call environment. A next step (34) includes communicating the ordered list of vocoders in an existing floor control message to the participants in the call. A next step (36) includes selecting, by at least the current transmitting participant, the first vocoder that it supports from the list of preferred vocoders, for use in that participant's next transmission in the group session.