Reliability is the top priority for Greek operator WIND Hellas’ CIO Nikolaos Costaras when it comes to OSS BSS solutions.

Costaras says this reliability is particularly important to the pre- and post-paid billing solutions WIND Hellas offers to its customer base.

"We do not wish to have surprises or outages," he says.

Costaras outlines the benefits to operators from working with a reliable vendor. He also details why WIND Hellas created a cost-control focused tariff and billing offering after the financial crisis hit Greece, and why is has proved popular with customers.