Question: What happens in the network when a Mobile Station (MS) fails to acknowledge receipt of charging information for the Advice of Charge (AoC) supplementary service?
Option 1: The network sends repeated charging information until acknowledgement is received.
Option 2: The network initiates an error correction protocol to ensure data integrity.
Option 3: The MS is temporarily barred from making further calls until the issue is resolved.
Option 4: No signalling is performed by the network in response to the lack of acknowledgement.
Explanation: In the context of Advice of Charge supplementary services, if a Mobile Station (MS) fails to acknowledge receipt of charging information, the network does not initiate any additional signalling. This approach avoids unnecessary network traffic when an MS is unable or fails to respond with an acknowledgement for charging details.