Methods for transferring a communication session between companion devices

A method for transferring a communication session between companion devices, the method performed by a wireline communication device configured with an identifier for a companion portable wireless communication device, the method comprising:

• detecting that the companion portable wireless communication device is within a range of the wireline communication device, wherein the companion portable wireless communication device is in an active mode for a communication session, wherein the companion portable wireless communication device is connected to a communication system using the identifier for the companion portable wireless communication device and a current set of session parameters for the communication session;
• synchronizing with the companion portable wireless communication device, wherein the synchronizing comprises receiving the current set of session parameters and wherein the session parameters comprise one or more identifiers of a talkgroup associated with the communication session;
• and
• responsive to user input, transitioning the wireline communication device to the active mode for the communication session, wherein the wireline communication device is connected to the communication system using the identifier for the companion portable wireless communication device and the current set of session parameters for the communication session, when the companion portable wireless communication device is in an inactive mode for the communication session.

A method for transferring a communication session between companion devices, the method performed by a Project 25 console subsystem controller that is enhanced to function as a serving radio frequency subsystem for a portable wireless communication device and companion wireline communication device pair, the method comprising:

• receiving a registration request for the portable wireless communication device from the companion wireline communication device, wherein the companion wireline communication device is in an inactive mode for a communication session, and the portable wireless communication device is in an active mode for the communication session, wherein the registration request includes an identifier for the portable wireless communication device;
• responsive to receiving the registration request, sending a standard Project 25 inter-RF subsystem interface registration request that includes the identifier for the portable wireless communication device to cause the console subsystem controller to become registered with a home radio frequency subsystem for the portable wireless communication device as the serving radio frequency subsystem for the portable wireless communication device, wherein the portable wireless communication device transitions to the inactive mode for the communication session and the companion wireline communication device transitions to the active mode for communicating media over a standard Project 25 inter-RF subsystem interface between the console subsystem controller and the home radio frequency subsystem for the portable wireless communication device.