C4i was acquired from the Longreach Group Ltd. for an enterprise value of about $16.8 million.
"This acquisition expands our portfolio of critical infrastructure solutions, builds on our presence in Australia and brings us closer to our customers and markets of interest," said Pam Drew, president of Exelis Information Systems.
"We welcome C4i to the Exelis portfolio. We look forward to synergies with our air traffic management business with an immediate focus on Australia's oneSKY Australia initiative to combine civil and military air traffic control.
"More broadly, we see opportunity for integrating C4i's communications capabilities with Exelis' expertise in developing and deploying large-scale communications networks," she said.
C4i Pty. Ltd. is a provider of advanced communications software that supports mission-critical communications in areas such as air traffic management, defense, public safety, mining and homeland security. It is has operations in Singapore and the United States.