The SuperStack 3 NBX architecture provides free unified messaging connectivity via IMAP4, free computer telephony integration links via TAPI 2.1, and emerging standards support for TAPI/.WAV, allowing integration of leading-edge applications such as 3rd party call center and voice mail solutions. Because these solutions are implemented over your network, you can greatly reduce costly analog/T1 connections and the hardware scalability and cost constraints associated with traditional solutions.