Section: G.3.3 B2B charging data generation and quota supervision
Content: Both B-CHF and C-CHF can generate CDRs, with information for both individual subscriber identification and the related business subscriber identifications if any. - The B- CHF generate CDRs for the business subscriber. - The C-CHF generate CDRs for the individual subscriber. In the business CHF only interaction, the quota is requested and granted between CTF and CHF. - The CTF request and consume quota from B-CHF. - B-CHF grant quota to the CTF. In the business CHF via consumer CHF interaction, the quota is requested and granted between CTF and B-CHF via C-CHF. - The CTF request and consume quota from B-CHF via C-CHF. - B-CHF grant quota to the CTF. - C-CHF forward and re-allocate quota. The Nchf services for interaction between C-CHF and B-CHF are specified in TS 32.290[ Telecommunication management; Charging management; 5G system; Services, operations and procedures of charging using Service Based Interface (SBI) ]  [57].