Avaya UPG ADV EC500 R9 Single Mode 3YPP

Maintain consistent call reachability for users who need one number to follow them beyond the desk. Avaya UPG ADV EC500 R9 SINGLE MODE 3YPP is a 3-year support package for EC500 R9 single mode deployments, built for organizations that depend on controlled voice continuity across office and remote work scenarios. This package fits environments where call handling, user accessibility, and predictable support coverage matter more than consumer-style convenience. It supports enterprise telephony teams that want to preserve established call routing behavior while extending access to users who move between locations. For procurement teams, the 3-year term helps standardize renewal planning and align support windows with broader communications lifecycle management. Because this is tied to a specific Avaya voice feature set, it is best suited for organizations already invested in Avaya telephony infrastructure and looking to extend the value of that platform rather than replace it. The result is a cleaner user experience for employees and a more controlled support model for IT.