Question: Which of the following categories of subscribers are NOT eligible to receive IMS-based Restricted Local Operator Services (RLOS) according to the specified conditions?
Option 1: Roaming users with no roaming agreement between their home operator and the local operator.
Option 2: Subscribers of the local operator who are in areas with unrestricted services and have been successfully authenticated.
Option 3: Visiting users from operators with whom the local operator has only circuit-switched (CS) roaming agreements, but not IMS service agreements.
Option 4: Local operator's own subscribers who have roamed into cells designated as having restricted services.
Explanation: RLOS services are defined for users connected to IMS over EPS and are specifically mentioned for roaming users with either no IMS roaming agreement or those with IMS roaming agreements for Restricted Operator Local Services. Since Option 3 describes a scenario where there is only a circuit-switched (CS) roaming agreement but not an IMS service agreement, these visiting users would not be eligible for RLOS as per the given conditions, which emphasize IMS connectivity and specific types of agreements that include IMS services.