This table describes the Rf billing statistics information which monitors the messages sent per-realm by Rf billing manager(SBC). SBC sends Rf billing data using Diameter as a transport protocol. Rf billing uses only ACR and ACA Diameter messages for the transport of billing data. The Accounting-Record-Type AVP on the ACR message labels the type of the accounting request. The following types are used by Rf billing. 1. For session-based charging, the types Start (session begins), Interim (session is modified) and Stop (session ends) are used. 2. For event-based charging, the type Event is used when a chargeable event occurs outside the scope of a session. Each row of this table is identified by a value of csbRfBillRealmStatsIndex and csbRfBillRealmStatsRealmName. The other indices of this table are csbCallStatsInstanceIndex defined in csbCallStatsInstanceTable and csbCallStatsServiceIndex defined in csbCallStatsTable.