Question: What does an Online-Charging-Flag AVP value of '0' indicate in relation to the ECF address from the SIP P-header "P-Charging-Function-Addresses"?
Option 1: The ECF address was provided, but the Online Charging Request was not sent.
Option 2: The ECF address was not provided.
Option 3: The ECF address is currently being processed for an Online Charging Request.
Option 4: The ECF address provided is invalid for the Online Charging Request.
Explanation: An Online-Charging-Flag AVP value of '0' indicates that the ECF (External Charging Function) address was not provided from the SIP P-header "P-Charging-Function-Addresses", crucial for determining how online charging requests are handled, highlighting the importance of proper address provisioning in telecom networks for billing and charging purposes.