Callipso has inked a deal to use Level 3 Communications' (3) Flex Ethernet data service.

Callipso, which provided VoIP origination and termination services, will use Level 3's networking service to manage voice traffic. The agreement will enable Callipso to prioritize its VoIP traffic.

Callipso also uses Level 3's voice termination, private line, high-speed Internet access and co-location services through previous agreements.