ACIS IP Office (IPO) Platform Implement Certified (77201X) Practice Exam

The User Extension Number holds the highest calling priority when dialing a number on an Avaya IP Office telephone because it directly identifies a specific user's extension within the organization's telephony system. When making a call, the system first checks if the dialed number matches any active user extensions, allowing for a straightforward and defined call path to the intended recipient.

This prioritization ensures that calls are efficiently routed to the correct extensions, enabling direct communication without unnecessary delays or complications. Additionally, using a user extension allows for immediate recognition of the calling party, which can be essential for maintaining effective communication within an organization.

While the Outgoing Line Group ID, Route ID, and System Short Code are important for routing and managing calls, they serve more specialized functions in call management. These options assist in directing calls based on various routing policies or to execute specific features, but they do not take precedence over the user extension when it comes to establishing the initial call connection.