IP Digital
Communications Server 100
The ESI Communications Server is a powerful tool around which you can build your organization’s entire telecommunications strategy — and you don’t have to know it all in advance.
Communications Server 200
That’s because the ESI Communications Server can be a traditional digital business phone system, a fully standards-based IP telephony system, or any mix of the two. The choice is entirely yours, and the mix can easily change when your needs do.
Communications Server 1000
The Communications Server combines multiple first-rate, feature-rich systems into one tightly integrated unit.