Building Reliable IP Telephony Systems defines reliability & availability and compares various IP telephony vendors and how they ensure high availability.

This InfoTech research report, Strategies for IP Telephony Evaluation and Migration: Best Practice Considerations for Deploying IPT in the Enterprise, provides perspective into selecting and implementing an IP Telephony solution. This brief emphasizes the challenges and success factors that come into play AFTER the basic convergence decision has been made.

This 80-page IP Telephony Guide explains the terms and concepts commonly used in the industry and helps you to plan and implement an IP phone system.

The independently conducted Nemertes Summary Report (not sponsored or commissioned by ShoreTel) includes a comparative assessment of the top IP telephony vendors.