Optical ethernet can facilitate virtually all business communication needs. These include: voice (telephone), video conferencing, central data base access, email, video/audio streaming and many more. Over an MPLS network with CoS ( Class of Service), fiber can facilitate any or all of these applications simultaneously over a single circuit. Optical ethernet is extremely reliable, and is provided with the same or better service level guarantees as other traditional forms of commercial bandwidth such as T1 or DS3.