Beyond Five-Nines

Designing a VoIP Network for Appropriate Availability

by Robert Bellman, Brooktrail Research and Mark Langanki, Spanlink Communications
Published 2006, Posted November 2006
 

Abstract:

Today’s enterprise VoIP solutions offer attractive new productivity features that traditional circuit-switched voice solutions cannot match. But the distributed, decentralized nature of VoIP calls for a new way to evaluate availability and to relate it to business value. The system approach to availability helps enterprises estimate the availability of entire VoIP systems rather than just individual devices. And the availability lifecycle provides a methodology for turning availability estimates into reality. Together, the system approach and the availability lifecycle give enterprises the tools they need to construct VoIP solutions with the most cost-effective balance between availability and productivity.
 

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