Sparkle to deliver voice solutions to the GSA Sign in with LinkedIn 05 February 2021 | Natalie Bannerman Sparkle has been selected by the European Global Navigation Satellite System Agency (GSA) to deliver voice services to its offices in France, Netherlands and Spain. Through a tender process, Sparkle beat out several other operators to win the contract. Under the terms of the agreement, Sparkle will provide Voice over Internet Protocol (VoIP), Public Switched Telephone Network (PSTN) services and related dial-in numbers to the aforementioned GSA offices. Sparkle’s corporate voice solution is an international prepaid voice traffic that features voice traffic encryption. As a full cloud-based solution, it also allows customers to use VoIP services across different offices distributed in multiple countries, with rapid scalability, real-time traffic control through a web console, and easy integration with existing IP PBX platforms and firewalls.