What is the function of Extensions in the IPO system?

In the IPO system, extensions play a crucial role as they serve to uniquely identify end-user devices or lines within the system. Each extension is assigned to a user or device, allowing the system to route calls accurately to the desired destination. When a user makes or receives a call, the system relies on these unique identifiers to connect the call properly, ensuring effective communication within the organization.

Extensions are fundamental for organizing and managing internal communications, as they help differentiate between different users, phones, or lines, facilitating functionalities like call forwarding, voicemail, and call transfers. Thus, understanding the importance of extensions is essential for anyone working with or configuring the IPO system.