What system provides callers with a recorded message directing them to the appropriate extension?

A voice messaging system is designed to deliver recorded messages to callers and direct them to the appropriate extension or individual. This system allows callers to receive information when a live person isn't available and ensures efficient communication by guiding them through a series of prompts. This streamlines the call process, enabling users to navigate the options based on their needs.

Mobile communication refers to the use of mobile devices for voice and text communication but does not specifically imply a system designed to provide recorded messages or direct callers to extensions. Video conferencing relates to visual communication between participants and does not involve directing calls. A computer bulletin board is a platform for posting messages and information but does not have any functionality related to managing phone calls or directing them. Hence, the voice messaging system is uniquely suited for this purpose, making it the correct choice.