[1] ITU-T Recommendation Q.930/I.450 (1993), ISDN user-network interface layer 3 – General aspects.
[2] CCITT Recommendation I.412 (1988), ISDN user-network interfaces – Interface structures and access capabilities.
[3] ITU-T Recommendation Q.921/I.441 (1997), ISDN user-network interface – Data link layer specification.
[4] ITU-T Recommendation Q.932 (1998), Digital subscriber signalling system No. 1 – Generic procedures for the control of ISDN supplementary services.
[5] ITU-T Recommendation X.25 (1996), Interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating in the packet mode and connected to public data networks by dedicated circuit.
[6] ITU-T Recommendations I.231 series, Circuit mode bearer service categories.
[7] ITU-T Recommendation V.110/I.463 (1996), Support of data terminal equipments with V-series type interfaces by an integrated services digital network.
[8] ITU-T Recommendation X.30/I.461 (1993), Support of X.21, X.21 bis and X.20 bis based Data Terminal Equipments (DTEs) by an Integrated Services Digital Network (ISDN).
[9] ITU-T Recommendation V.120/I.465 (1996), Support by an ISDN of data terminal equipment with V-series type interfaces with provision for statistical multiplexing.
[10] CCITT Recommendation G.711 (1988), Pulse Code Modulation (PCM) of voice frequencies.
[11] CCITT Recommendation G.721 (1988 – Withdrawn, replaced by G.726), 32 kbit/s adaptive differential pulse code modulation (ADPCM).
[12] CCITT Recommendation G.722 (1988), 7 kHz audio-coding within 64 kbit/s.
[13] ITU-T Recommendation H.261 (1993), Video codec for audiovisual services at p × 64 kbit/s.
[14] ITU-T Recommendation X.31/I.462 (1995), Support of packet mode terminal equipment by an ISDN.
[15] CCITT Recommendation I.460 (1988), Multiplexing, rate adaption and support of existing interfaces.
[16] CCITT Recommendation V.6 (1988 – Withdrawn), Standardization of data signalling rates for synchronous data transmission on leased telephone-type circuits.
[17] ITU-T Recommendation X.1 (1996), International user classes of service in, and categories of access to public data networks and Integrated Services Digital Networks (ISDNs).
[18] CCITT Recommendation I.330 (1988), ISDN numbering and addressing principles.
[19] ITU-T Recommendation E.164 (1997), The international public telecommunication numbering plan.
[20] CCITT Recommendation E.163 (1988 – Now superseded by E.164), Numbering plan for the international telephone service.
[21] ITU-T Recommendation X.121 (1996), International numbering plan for public data networks.
[22] ITU-T Recommendation F.69 (1994), The international telex service – Service and operational provisions of telex destination codes and telex network identification codes.
[23] ITU-T Recommendation X.213 (1995) | ISO/IEC 8348:1996, Information technology – Open Systems Interconnection – Network service definition.
[24] ISO/IEC 8348:1988, Information processing systems – Data communications – Network service definition – Addendum 2: Network layer addressing.
[25] CCITT Recommendation I.334 (1988), Principles relating ISDN numbers/sub-addresses to the OSI reference model network layer addresses.
[26] CCITT Recommendation X.21 (1992), Interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for synchronous operation on public data networks.
[27] ITU-T Recommendation I.431 (1993), Primary rate user-network interface – Layer 1 specification.
[28] ITU-T Recommendation T.62 (1993), Control procedures for teletex and Group 4 facsimile services.
[29] CCITT Recommendation T.503 (1991), A document application profile for the interchange of Group 4 facsimile documents.
[30] ITU-T Recommendation T.501 (1993), Document application profile MM for the interchange of formatted mixed mode documents.
[31] ITU-T Recommendation T.502 (1994), Document application profile PM-11 for the interchange of simple structure, character content documents in processable and formatted forms.
[32] ITU-T Recommendation T.70 (1993), Network-independent basic transport service for the telematic services.
[33] ITU-T Recommendation T.504 (1993), Document application profile for videotex interworking.
[34] ITU-T Recommendations I.241-series, Teleservices supported by an ISDN.
[35] CCITT Recommendation G.725 (1988), System aspects for the use of the 7 kHz audio codec within 64 kbit/s.
[36] ISO 1745:1975, Information processing – Basic mode control procedures for data communication systems.
[37] CCITT Recommendation T.71 (1988), Link Access Protocol Balanced (LAPB) extended for half-duplex physical level facility.
[38] ISO/IEC 4335:1993, Information technology – Telecommunications and information exchange between systems – High-level Data Link Control (HDLC) procedures – Elements of procedures.
[39] ISO/IEC 8802-2:1998, Information technology – Telecommunications and information exchange between systems – Local and metropolitan area networks – Specific requirements – Part 2: Logical link control.
[40] ITU-T Recommendation X.75 (1996), Packet-switched signalling system between public networks providing data transmission services.
[41] ISO/IEC 8208:1995, Information technology – Data communications – X.25 Packet Layer Protocol for Data Terminal Equipment.
[42] ISO/IEC 8348:1987, Information processing systems – Data communications – Network service definition.
[43] ISO/IEC 8473:1988, Information processing systems – Data communications – Protocol for providing the connectionless-mode network service.
[44] CCITT Recommendation X.244 (1988 – Withdrawn), Procedure for the exchange of protocol identification during virtual call establishment on packet switched public data networks.
[45] ITU-T Recommendation Q.920/I.440 (1993), ISDN user-network interface data link layer – General aspects.
[46] ITU-T Recommendation I.430 (1995), Basic user-network interface – Layer 1 specification.
[47] CCITT Recommendation I.230 (1988), Definition of bearer service categories.
[48] CCITT Recommendation I.240 (1988), Definition of teleservices.
[49] CCITT Recommendation T.50 (1992), International Reference Alphabet (IRA) (Formerly International Alphabet No. 5 or IA5) – Information technology – 7-bit coded character set for information exchange.
[50] ISO/IEC 646:1991, Information technology – ISO 7-bit coded character set for information interchange.
[51] ITU-T Recommendations on Integrated services digital network (ISDN).
[52] ITU-T Recommendation V.110/I.463 (1996), Support of data terminal equipments with V-series type interfaces by an integrated services digital network (ISDN).
[53] CCITT Recommendation Q.931 (1988), ISDN user-network interface layer 3 specification for basic call control.
[54] ITU-T Recommendation Q.957, Stage 3 description for additional information transfer supplementary services using DSS1.
[55] CCITT Recommendation V.21 (1984), 300 bits per second duplex modem standardized for use in the general switched telephone network.
[56] CCITT Recommendation V.22 (1988), 1200 bits per second duplex modem standardized for use in the general switched telephone network and on point-to-point 2-wire leased telephone-type circuits.
[57] CCITT Recommendation V.22 bis (1988), 2400 bits per second duplex modem using frequency division technique standardized for use in the general switched telephone network and on point-to-point 2-wire leased telephone-type circuits.
[58] CCITT Recommendation V.23 (1988), 600/1200-baud modem standardized for use in the general switched telephone network.
[59] CCITT Recommendation V.26 (1984), 2400 bits per second modem standardized for use on 4-wire leased telephone-type circuits.
[60] CCITT Recommendation V.26 bis (1984), 2400/1200 bits per second modem standardized for use in the general switched telephone network.
[61] CCITT Recommendation V.26 ter (1988), 2400 bits per second duplex modem using the echo cancellation technique standardized for use on the general switched telephone network and on point-to-point 2-wire leased telephone type circuits.
[62] CCITT Recommendation V.27 (1984), 4800 bits per second modem with manual equalizer standardized for use on leased telephone-type circuits.
[63] CCITT Recommendation V.27 bis (1984), 4800/2400 bits per second modem with automatic equalizer standardized for use on leased telephone-type circuits.
[64] CCITT Recommendation V.27 ter (1984), 4800/2400 bits per second modem standardized for use in the general switched telephone network.
[65] CCITT Recommendation V.29 (1988), 9600 bits per second modem standardized for use on point-to-point 4-wire leased telephone-type circuits.
[66] ITU-T Recommendation V.32 (1993), A family of 2-wire, duplex modems operating at data signalling rates of up to 9600 bit/s for use on the general switched telephone network and on leased telephone-type circuits.
[67] ITU-T Recommendation Q.850 (1998), Usage of cause and location in the digital subscriber signalling system No. 1 and the Signalling System No. 7 ISDN user part.
[68] ITU-T Recommendation F.182 (1996), Operational provisions for the international public facsimile service between subscribers with Group 3 facsimile machines (Telefax 3).
[69] ITU-T Recommendation F.184 (1996), Operational provisions for the international public facsimile service between subscribers stations with Group 4 facsimile machines (Telefax 4).
[70] CCITT Recommendation F.230 (1988 – Withdrawn), Service requirements unique to Mixed Mode (MM) used within the teletex service.
[71] ITU-T Recommendation F.220 (1993 – Withdrawn), Service requirements unique to the processable mode number eleven (PM11) used within the teletex service.
[72] CCITT Recommendation F.200 (1992 – Withdrawn), Teletex service.
[73] ITU-T Recommendation F.300 (1993), Videotex service.
[74] ITU-T Recommendation T.102 (1993), Syntax-based videotex end-to-end protocols for the circuit mode ISDN.
[75] ITU-T Recommendation T.101 (1994), International interworking for videotex services.
[76] CCITT Recommendation F.60 (1992), Operational provisions for the international telex service.
[77] ITU-T Recommendations X.400-series, Message Handling Systems (MHS).
[78] ITU-T Recommendations X.200-series, Open Systems Interconnection (OSI): Model and notation.
[79] CCITT Recommendation F.721 (1992), Videotelephony teleservice for ISDN.
[80] ITU-T Recommendations F.700-series, Audiovisual services.
[81] ISO/IEC 8878:1992, Information technology – Telecommunications and information exchange between systems – Use of X.25 to provide the OSI Connection-mode Network Service.
[82] ISO/IEC TR 9577:1996, Information technology – Protocol identification in the network layer.
[83] ITU-T Recommendation Q.95x-series, Stage 3 description for number identification supplementary services using DSS1.
[84] ITU-T Recommendations Q.953-series, Stage 3 description for call completion supplementary services using DSS1.
[85] CCITT Recommendation Q.951-series, Stage 3 description for number identification supplementary services using DSS1.
[86] ITU-T Recommendation Q.952 (1993), Stage 3 service description for call offering supplementary services using DSS1.
[87] ITU-T Recommendation V.110 (1996), Support of data terminal equipments with V-series type interfaces by an integrated services digital network (in relation to 38.4 kbit/s).
[88] ITU-T Recommendation V.14 (1993), Transmission of start-stop characters over synchronous bearer channels.
[89] ITU-T Recommendation V.110 (1996), Support of data terminal equipments with V-series type interfaces by an integrated services digital network (in relation to 28.8 kbit/s and 24 kbit/s).
[90] ITU-T Recommendation V.34 (1998), A modem operating at data signalling rates of up to 33 600 bit/s for use on the general switched telephone network and on leased point-to-point 2-wire telephone-type circuits.
[91] CCITT Recommendation F.720 (1992), Videotelephony services – General.
[92] ITU-T Recommendation H.223 (1996), Multiplexing protocol for low bit rate multimedia communication.
[93] ITU-T Recommendation H.245 (1998), Control protocol for multimedia communication.
[94] ITU-T Recommendation F.702 (1996), Multimedia conference services.
[95] ITU-T Recommendation F.700 (1996), Framework Recommendation for audiovisual multimedia services.
[96] ITU-T Recommendation X.223 (1993), Use of X.25 to provide the OSI connection-mode network service for ITU-T applications.
[97] ITU-T Recommendation F.731 (1997), Multimedia conference services in the ISDN.
[98] ITU-T Recommendation G.728 (1992), Coding of speech at 16 kbit/s using low-delay code excited linear prediction.
[99] ITU-T Recommendation G.729 (1996), Coding of speech at 8 kbit/s using conjugate structure algebraic-code-excited linear prediction (CS-ACELP).
[100] ITU-T Recommendation Q.761 (1999), Signalling System No. 7 – ISDN User Part functional description.
[101] ITU-T Recommendation Q.764 (1999), Signalling System No. 7 – ISDN user part signalling procedures.