Epsilon will use BTI's dynamic optical layer technology, which was just introduced in August 2011.
The technology, which is intended to manage network traffic, includes add/drop multiplexing and end-to-end service-centric and path-centric management.
"This is a pioneering project," stated George Szlosarek, Epsilon's chief technology officer.
"With BTI Systems, we have gained a strong and competent partner in helping us to make optimal use of our network resources to establish connections for our customers, in a market where bandwidth consumption for optical services is exploding faster everywhere around the world."
Financial details were not disclosed.
The privately held Ottawa company received $23 million in funding in April and posted $50 million in revenues in fiscal 2010.