Systems and methods for maintaining an ambient monitoring session

Maintaining Ambience Listening (AL) (ambient monitoring) capability for a communication device such as a Push-To-Talk (PTT) Terrestrial Trunked Radio (TETRA) device, includes using a first target identity to identify the communication device in a first ambient monitoring session with an ambient monitoring device. While in the first ambient monitoring session, receiving, a communication service state change notification for the first target identity, determining a second target identity to identify the communication device in a second ambient monitoring session that has not been established, and transmitting, to the ambient monitoring device, the second target identity. A communication service state change notification includes receiving one selected from a group consisting of a login state change for a user and a network state change. Determining a second target identity includes determining one selected from a group consisting of a new user identity, a device identity, and a subscriber unit identifier. Transmitting the second target identity includes transmitting a termination message including the second target identity. Receiving a communication service state change notification for a first target identity includes receiving a push-to-talk service state change notification for a first push-to-talk identity.