Abstract: The present invention relates to a system and method of providing communications for a mobile vehicle, comprising: a) providing the vehicle with the ability to communicate using a number of different communications methods; b) establishing a list of parameters, said list of parameters defining a set of criteria for determining the preferred attributes of the communications method to be used at any given time; and c) selecting a communications method based on said list of parameters.

Abstract: The present invention relates to a system and method of providing communications for a mobile vehicle, comprising: a) providing the vehicle with the ability to communicate using a number of different communications methods; b) establishing a list of parameters, said list of parameters defining a set of criteria for determining the preferred attributes of the communications method to be used at any given time; and c) selecting a communications method based on said list of parameters.

Abstract: A multi-channel communications system for communications between a mobile units and dispatch agencies through tower sites under control of a multi-channel communication controller. The method of communications used is time division multiple access with provisions for alternate methods. The mobile units and dispatch agencies have forms of identifications to route messages between the mobile units and dispatch agencies according to the forms of identification. The forms of identification are resolved from one form to another to operate with the alternate methods of communications. The mobile units are handed off from one communications channel to another by the multi-channel controller as channel loading conditions exceed a predetermined limit. Mobile units change tower sites as the geographic coverage of a tower site changes.