Abstract: A communication device having multiple detachable communication modules includes a first communication module and a second communication module. The first communication module is configured to receive RF signals from a wireless network. The second communication module may be physically attached to the first communication module and is coupled to the first communication module by a wireless link. The second communication module is configured to receive the RF signals from the first communication module over the wireless link and to convert the RF signals into an audible signal. In addition, the second communication module is physically dimensioned so that it may be fitted into or onto an ear of a communication device user.

Abstract: An information system includes a first module and a second module that interoperate over first and second communication ports. Interoperation over the first and second communication ports provides the first module access to functions and features of the second module, and likewise provides the second module access to functions and features of the first module. The first and second modules may be further operable to communicate over first and second networks, respectively.

Abstract: An apparatus for use with a handheld device, which includes a holster configured to receive and releasably retain the handheld device. The apparatus also includes a clip assembly. The apparatus further includes a mounting structure centered on an axis configured to secure the clip assembly to the holster. The mounting structure has a hub supporting the clip assembly for rotation relative to the holster about the axis.

Abstract: An apparatus is provided for use with a handheld device. The apparatus includes a panel configured to provide support for the handheld device, defining an aperture and having a mating structure located in the aperture. The apparatus further includes a clip assembly operative to engage an article of clothing and configured to releasably attach to the mating structure, and thereby to impart a first configuration to the apparatus. The apparatus also includes a replacement insert configured to releaseably attach to the mating structure in place of the clip assembly, and thereby to impart a second configuration to the apparatus.