Question: A User Equipment (UE) attempts to initiate a Voice Broadcast Service (VBS) call, but the network responds with an error. Which of the following error codes would indicate that the UE's SIM does not have the necessary subscription for the specific group ID required for the VBS call?
Option 1: 151 - VBS/VGCS not supported by the network
Option 2: 153 - No subscription for group ID
Option 3: 160 - No access rights for SIM file
Option 4: 162 - Operation not applicable or not possible
Explanation: Error code 153 directly relates to the absence of a subscription for a specific group ID on the UE's SIM, which is a prerequisite for participating in VBS/VGCS calls. This error specifically highlights an issue with the group ID subscription, making it the correct choice for the scenario described. - Option 1 (151) is incorrect because it pertains to the network's overall support for VBS/VGCS services, not the UE's subscription status. - Option 3 (160) is incorrect as it refers to access rights for a SIM file, which is unrelated to group ID subscriptions. - Option 4 (162) is too broad, indicating an operational impossibility without specifying the reason, which in this case is directly related to the lack of a group ID subscription.