26.1 Providing Audible Announcements26.2 Communication Diversion (CDIV) and Communication Forwarding26.3 Communication Diversion Notification (CDIVN)26.4 Conference (CONF)26.5 Message Waiting Indication (MWI)26.6 Originating Identification Presentation/Restriction (OIP, OIR)26.7 Terminating Identification Presentation/Restriction (TIP, TIR)26.8 Anonymous Communication Rejection (ACR) and Communication Barring (CB)26.9 Advice of Charge (AoC)26.10 Completion of Communications to Busy Subscriber (CCBS) and Completion of Communications on No Reply (CCNR)26.11 Malicious Communication Identification (MCID)26.12 Communication Hold (HOLD)26.13 Explicit Communication Transfer (ECT)26.14 User Settings in PSTN/ISDN Simulation Services