ETSI TS 101 321-2003 网络上电信和互联网协议的协调(TIPHON)第4次发布.域内定价,授权和交换使用的公开确立协议(OSP)(版本4.1.1)
Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON) Release 4; Open Settlement Protocol (OSP) for Inter-Domain pricing, authorization and usage exchange (V4.1.1)