I was only following the project plan

Terry doesn't think for himself. Terry doesn't question his 'orders'. Terry doesn't or can't consider the big picture. All Terry cares about is ticking off the tasks in his project plan and delivering his project on time (which he frequently fails to do).

The result for Terry: An inability to offer truly converged services as each service is defined and delivered in isolation (on separate, often incompatible, platforms) without any consideration for the other services that Terry offers.

The result for Terry's customers: Frustration and confusion!

The solution: Terry should be held to account for his telecommunications crimes.