VoIP - Our specialty – Our Business CoolTone's network and OSS systems were built from the ground up with the intention of being 100% VoIP. We are committed to designing, developing and delivering a comprehensive, cost-effective VoIP solution that covers all of your current and future telephony needs. That's our promise.Real-Time Traffic Management - Superior Voice QualityTerminating more than a billion minutes a year – and countingProviding the absolute best in VoIP servicesWhat's driving CoolTone's success?Solid relationships with tier-one carriersSeasoned management team with broad experienceA top-quality internal network that is 100% VoIPWorld-class, state-of-the-art traffic management systemDedicated end points in 20+ countriesInstant access worldwide through partner interconnectionsCompetitive termination around the world