DS EN 300257:2006
DS EN 300257:2006 Private Integrated Services Network (Pisn) - Inter-Exchange Signaling Protocol - Call Diversion Supplementary Service Describes the signaling protocol for use at the Q reference point in support of the call diversion Supplementary Services: - Call Forwarding Unconditional (SS-CFU); - Call Forwarding Busy (SS-CFB); -