Question: In a Business-to-Business (B2B) converged charging architecture, where does the Network Function (NF), specifically the Charging Trigger Function (CTF), report charging information in a 'business CHF via consumer CHF' interaction scenario for a business subscriber?
Option 1: Directly to the Business Charging Handling Function (B-CHF)
Option 2: To an external, third-party billing system
Option 3: To the Consumer Charging Handling Function (C-CHF), which then reports to B-CHF
Option 4: To a centralized data warehouse for later processing
Explanation: In the described 'business CHF via consumer CHF' interaction scenario, the NF (CTF) first collects and reports the charging information to the Consumer Charging Handling Function (C-CHF). The C-CHF is then responsible for reporting this charging information, specifically tailored per business subscriber, to the Business Charging Handling Function (B-CHF). This hierarchical reporting structure ensures that both consumer and business aspects of charging are accurately managed within the converged charging architecture.