The purpose of this Recommendation is to define the collection of usage data needed to supportaccounting of residential SIP telephony (RST) features. In addition to defining how the collection of usage data is done, this Recommendation details the various accounting events and their associated attributes. The IPCablecom2 accounting framework and generic requirements are defined in the IPCablecom2 accounting Recommendation [ITU-T J.363], on which this Recommendation is based. This release of the Recommendation supports services described in Appendix II of [ITU-T J.460.0], and defined in detail in [ITU-T J.460.1]. Future releases will support additional services that are described in Appendices I and III of [ITU-T J.460.0], as they are developed.