When updating users in the phone system, their names will not update instantaneously on your phone's directory.
This document explains how to update your directory for the latest names/extensions on the phone system. This process also happens if the phone reboots and also overnight the phone will update itself.
The caller ID signaling can also be set to prefer network signaling (SIP info) instead of the directory. You can review that setup in this article.
The steps below may appear differently based on phone model, however the steps to reach this setting are the same.
1. Navigate to the Menu
2. Navigate to the Directory, press Enter
3. Navigate to Remote Phone Book, press Enter
With Company Directory highlighted, press Update
Reboot the phone.