When you're forced to deal with such a wide variety of equipment changing any one part of the equation will not meet the needs of creating a balanced network that can cover multiple missions. There is one factor in the equation that has the potential to solve the issue of connecting multiple networks as well as supporting many different field technologies. The Gateway, acting as the front door of each network, can be upgraded to have the ability to open up directly to another Gateway, meaning they can communicate with other Gateways. This allows all networks to interconnect both in the office and in the field. While outdated and many different devices can be used until such time they can be replaced.
More information about text formats