When complete, the OpenSky solution will be able to handle over 3,000 indoor/outdoor radio users on a cutting edge private voice and data system covering 13 cities. It is based on the widely-accepted IS-732 protocol to support mobile applications with end-to-end TCP/IP connectivity.
Initially operating on DART's 800 and 900 spectrum, the system is a prime example of transportation agencies using wireless to enhance rider experience and streamline operations.
Although DART appears to have sufficient spectrum on-hand for this deployment, other agencies who do not have enough spectrum already available to deploy similar systems can readily buy or lease suitable spectrum on the secondary (i.e. open) market.
View the Tyco press release