Which action can an engineer take to ensure that calling privileges are uniform for a user with a phone that has multiple lines?

Configuring CSS on individual lines allows each line to carry a different CSS assignment, which introduces privilege inconsistency across lines rather than enforcing a uniform policy.

Dependency Records is a CUCM administrative reporting tool used to display relationships between configuration objects and has no effect on controlling or standardizing calling privileges.

Called Party Transformation CSS is used to reformat or manipulate the called party number before routing and does not govern or unify the calling privileges of a device or its lines.

Configuring CSS at the IP phone device level applies a single calling privilege set to the entire device, so every line on that phone uses the same outbound call routing restrictions and permissions. When a line has no individual CSS assigned, CUCM falls back to the device-level CSS, making device-level configuration the cleanest way to enforce uniform privileges across all lines.