info element. Here a list of QSIG opcodes: List of ISDN standards ETS 300 052 - Multiple Subscriber Number ETS 300 055 - Call Waiting ETS 300 092 - Calling Line Identification Presentation (CLIP) ETS 300 093 - Calling Line Identification Restriction (CLIR) ETS 300 097 - Connected Line Identification Presentation (COLP) ETS 300 098 - Connected Line Identification Restriction (COLR) ETS 300 130 - Malicious Call Identification ETS 300 141 - Call Hold ETS 300 172 - Circuit-Mode Basic Service ETS 300 173 - Called/Calling Line ID Presentation ETS 300 182 - Advice Of Charge ETS 300 188 - Three Way Conference ETS 300 207 - Call Diversion ETS 300 237 - Called/Calling Name Presentation ETS 300 238 - Called/Calling Name Presentation ETS 300 239 - Generic Functional Protocol ETS 300 256 - CFU Supplementary Service ETS 300 258 - Path Replacement (ANF-PR) ETS 300 359 - Call Completion To Busy Subscriber (CCBS) ETS 300 260 - Call Transfer By Join (SS-CT) ETS 300 261 - Call Transfer - (SS-CT) ETS 300 369 - Explicit Call Transfer ETS 300 745 - Message Waiting Indication (MWI) ETS 300 259 - Path Replacement Additional Network Feature (ANF-PR) ETS 301 258 - Recall Supplementary Service (SS-RE) ETS 301 919 - Single Step Call Transfer Supplementary Service (SS-SSCT) Source : European Telecommunications Standards Institute (ETSI) CCITT G.703 - Describes the physical/electrical characteristics of hierarchical digital interfaces. Source : International Telecommunication Union (ITU) See also H.450 DPNSS Telecommunication protocols Telephony