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Data Communications

Parity IT Business Solutions - http://www.parity.net

Business and IT Technology services organisation providing IT and project management training, IT staff outsourcing, IT project consultancy and an IT recruitment job board

SIP Trunking Services - http://www.xo.com/services/voip/sip/Pages/overview.aspx

XO Communication is a leading telecommunications company serving businesses throughout the United States with a specialization in SIP trunking services.