eOn Communications Corporation (eOn) is a provider of communications solutions. eOn's offerings are built on open architectures that enable adoption of technologies, such as voice over Internet protocol (VoIP) and concepts, such as service-oriented architectures (SOA). eOn focuses its resources on developing and marketing products that help businesses communicate with their customers. In April 2009, eOn completed the acquisition of Cortelco Systems Holding Corp. (Cortelco). Cortelco merged with a wholly owned subsidiary of eOn, and became a wholly owned subsidiary of eOn.