Date of Last Update : 16 May 1995 List of ITU-T I-Series Recommendations in force ** - Series I * ISDN - General structure - Terminology I.112 (1993) [Rev.1] [16 pp.] [Publ.: Nov.93] Vocabulary of terms for ISDNs I.113 (11/93) [Rev.2] [24 pp.] [Publ.: Nov.94] Vocabulary of terms for broadband aspects of ISDN Note - C: 9/28/45 I.114 (1993) [New] [4 pp.] [Publ.: Oct.93] Vocabulary of terms for universal personal telecommunication * Description of ISDNs I.120 (1993) [Rev.1] [2 pp.] [Publ.: Nov.93] Integrated services digital networks (ISDNs) I.121 (04/91) [Rev.1] [2 pp.] [Publ.: Jul.91] Broadband aspects of ISDN I.122 (1993) [Rev.1] [1 pp.] [Publ.: Oct.93] Framework for frame mode bearer services * General modelling methods I.130 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Method for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN * Telecommunication network and service attributes I.140 (1993) [Rev.1] [16 pp.] [Publ.: Jan.94] Attribute technique for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN I.141 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] ISDN network charging capabilities attributes ** - Series i * General description of asynchronous transfer mode i.150 (1993) [Rev.1] [8 pp.] [Publ.: Nov.93] B-ISDN asynchronous transfer mode functional characteristics ** - Series I * Service capabilities - Scope I.200 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Guidance to the I.200-Series of Recommendations * General aspects of services in ISDN I.210 (1993) [Rev.1] [28 pp.] [Publ.: Dec.93] Principles of telecommunication services supported by an ISDN and the means to describe them I.211 (1993) [Rev.1] [13 pp.] [Publ.: Nov.93] B-ISDN service aspects * Common aspects of services in the ISDN I.220 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Common dynamic description of basic telecommunication services I.221 (1993) [Rev.1] [4 pp.] [Publ.: Nov.93] Common specific characteristics of services * Bearer services supported by an ISDN I.230 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Definition of bearer service categories I.231 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Circuit-mode bearer service categories I.231.1 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] 64 kbit/s unrestricted, 8 kHz structured I.231.2 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] 64 kbit/s, 8kHz structured, usable for speech information transfer I.231.3 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] 64 kbit/s, 8kHz structured, usable for 3.1 kHz audio information transfer I.231.4 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Alternate speech / 64 kbit/s unrestricted, 8 kHz structured I.231.5 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] 2 x 64 kbit/s unrestricted, 8 kHz structured I.231.6 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] 384 kbit/s unrestricted, 8 kHz structured I.231.7 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] 1536 kbit/s unrestricted, 8 kHz structured I.231.8 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] 1920 kbit/s unrestricted, 8 kHz structured I.231.9 (1993) [New] [6 pp.] [Publ.: Feb.94] Circuit mode 64 kbit/s 8 kHz structured multi-use bearer service category I.231.10 (08/92) [New] [5 pp.] [Publ.: Nov.92] Circuit-mode multiple-rate unrestricted 8 kHz structured bearer service category I.232 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Packet-mode bearer services categories I.232.1 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Virtual call and permanent virtual circuit I.232.2 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Connectionless bearer service category I.232.3 (1993) [Rev.1] [13 pp.] [Publ.: Mar.94] User signalling bearer service category (USBS) I.233 (10/91) [New] [1 pp.] [Publ.: Apr.92] Frame mode bearer services I.233.1 (10/91) [New] [34 pp.] [Publ.: Apr.92] ISDN frame relaying bearer service Note - Published with I.233 I.233.2 (10/91) [New] [18 pp.] [Publ.: Apr.92] ISDN frame switching bearer service Note - Published with I.233 * Teleservices supported by an ISDN I.240 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Definition of teleservices I.241 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Teleservices supported by an ISDN I.241.1 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Telephony I.241.2 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Teletex I.241.3 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Telefax 4 I.241.4 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Mixed mode I.241.5 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Videotex I.241.6 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Telex I.241.7 (1993) [New] [5 pp.] [Publ.: Nov.93] Telephony 7 kHz teleservice * Supplementary services in ISDN I.250 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Definition of supplementary services I.251 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Number identification supplementary services I.251.1 (08/92) [Rev.1] [4 pp.] [Publ.: Oct.92] Direct-dialling-In I.251.2 (08/92) [Rev.1] [5 pp.] [Publ.: Oct.92] Multiple Subscriber Number I.251.3 (08/92) [Rev.1] [9 pp.] [Publ.: Oct.92] calling Line Identification Presentation I.251.4 (08/92) [Rev.1] [16 pp.] [Publ.: Oct.92] Calling Line Identification Restriction I.251.5 (02/95) [Rev.1] [8 pp.] [Publ. sched.: Jul.95] Connected Line Identification Presentation (COLP) Note - C: 83/113/136 I.251.6 (02/95) [Rev.1] [5 pp.] [Publ. sched.: Jul.95] Connected Line Identification Restriction (COLR) Note - C: 83/113/136 I.251.7 (08/92) [Rev.1] [8 pp.] [Publ.: Oct.92] Malicious call Identification I.251.8 (08/92) [Rev.1] [6 pp.] [Publ.: Oct.92] Sub-addressing supplementary service I.252 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Call offering supplementary services I.252.1 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Call Transfer (CT) I.252.2 (08/92) [Rev.1] [15 pp.] [Publ.: Nov.92] Call Forwarding Busy I.252.3 (08/92) [Rev.1] [9 pp.] [Publ.: Nov.92] Call Forwarding No Reply I.252.4 (08/92) [Rev.1] [11 pp.] [Publ.: Nov.92] Call Forwarding Unconditional I.252.5 (08/92) [Rev.1] [9 pp.] [Publ.: Nov.92] Call Deflection I.252.6 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Line Hunting (LH) I.253 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Call completion supplementary services I.253.1 (07/90) [Rev.1] [12 pp.] [Publ.: Oct.90] Call waiting (CW) supplementary service I.253.2 (08/92) [Rev.1] [8 pp.] [Publ.: Nov.92] Call Hold I.253.3 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Completion of calls to busy Subscribers (CCBS) I.254 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Multiparty supplementary services I.254.1 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Conference calling (CONF) I.254.2 (08/92) [Rev.1] [10 pp.] [Publ.: Nov.92] Three-Party Supplementary Service I.255 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Community of interest supplementary services I.255.1 (08/92) [Rev.1] [14 pp.] [Publ.: Nov.92] Closed User Group I.255.2 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Private Numbering Plan (PNP) I.255.3 (07/90) [New] [9 pp.] [Publ.: Oct.90] Multi-level precedence and preemption service (MLPP) I.255.4 (07/90) [New] [6 pp.] [Publ.: Oct.90] Priority service I.255.5 (08/92) [New] [6 pp.] [Publ.: Nov.92] Outgoing call barring I.256 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Charging supplementary services I.256.1 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Credit card calling (CRED) I.256.2 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] advice of charge (AOC) I.256.2a (1993) [New] [9 pp.] [Publ.: Mar.94] Advice of charge: charging information at call set-up time (AOc-S) I.256.2b (1993) [New] [8 pp.] [Publ.: Mar.94] Advice of charge: charging information during the call (AOc-D) I.256.2c (1993) [New] [7 pp.] [Publ.: Mar.94] Advice of charge: charging information at the end of the call (AOc-E) I.256.3 (08/92) [Rev.1] [10 pp.] [Publ.: Nov.92] Reverse charging I.257 (1988) [Blue Book Fasc. III.7] [Publ.: Jun.89] Additional information transfer I.257.1 (08/92) [Rev.1] [16 pp.] [Publ.: Nov.92] User-to-User Signalling I.258.2 (02/95) [New] [8 pp.] [Publ. sched.: Jul.95] In-call modification (IM) Note - C: 83/113/136 * Network functional principles I.310 (1993) [Rev.1] [18 pp.] [Publ.: Nov.93] ISDN - Network functional principles I.311 (1993) [Rev.1] [37 pp.] [Publ.: Dec.93] B-ISDN general network aspects I.312 (10/92) [New] [33 pp.] [Publ.: Dec.93] Principles of intelligent network architecture Note - Same as Q.1201 * Reference models I.320 (11/93) [Rev.1] [15 pp.] [Publ.: Nov.94] ISDN protocol reference model Note - C: 9/28/45 I.321 (04/91) [New] [7 pp.] [Publ.: Jul.91] B-ISDN protocol reference model and its application I.324 (10/91) [Rev.1] [17 pp.] [Publ.: Feb.92] ISDN network architecture I.325 (1993) [Rev.1] [13 pp.] [Publ.: Dec.93] Reference configurations for ISDN connection types I.327 (1993) [Rev.1] [11 pp.] [Publ.: Nov.93] B-ISDN functional architecture I.328 (10/92) [New] [4 pp.] [Publ.: Apr.93] Intelligent network - Service plane architecture Note - Same as Q.1202 I.329 (10/92) [New] [12 pp.] [Publ.: May.93] Intelligent network - Global functional plane architecture Note - Same as Q.1203 * Numbering, addressing and routing I.330 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] ISDN numbering and addressing principles I.331 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] Numbering plan for the ISDN era Note - Same as E.164 I.333 (1993) [Rev.1] [32 pp.] [Publ.: Jan.94] Terminal selection in ISDN I.334 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] Principles relating ISDN numbers/subaddresses to the OSI reference model network layer addresses I.335 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] ISDN routing principles Note - Superseded by E.172 * Connection types I.340 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] ISDN connection types * Performance objectives I.350 (1993) [Rev.1] [13 pp.] [Publ.: Nov.93] General aspects of quality of service and network performance in digital networks, including ISDNs I.351 (1993) [Rev.1] [8 pp.] [Publ.: Nov.93] Relationships among ISDN performance Recommendations I.352 (1993) [Rev.1] [19 pp.] [Publ.: Nov.93] Network performance objectives for connection processing delays in an ISDN I.353 (1993) [New] [9 pp.] [Publ.: Oct.93] [PN: I.35E] Reference events for defining ISDN performance parameters I.354 (1993) [New] [9 pp.] [Publ.: Oct.93] Network performance objectives for packet-mode communication in an ISDN I.355 (03/95) [Rev.1] [Publ. sched.: Jul.95] ISDN 64 kbit/s connection type availability performance Note - C: 90/118/141 I.356 (11/93) [New] [19 pp.] [Publ.: Feb.95] B-ISDN ATM layer cell transfer performance Note - C: 9/28/45 * Protocol layer requirements I.361 (1993) [Rev.1] [12 pp.] [Publ.: Nov.93] B-ISDN ATM layer specification I.362 (1993) [Rev.1] [3 pp.] [Publ.: Oct.93] B-ISDN ATM adaptation layer (AAL) functional description I.363 (1993) [Rev.1] [68 pp.] [Publ.: Feb.94] B-ISDN ATM adaptation layer (AAL) specification I.363 Add. (11/93) [Rev.2] [Publ.: May.94] B-ISDN ATM adaptation layer (AAL) specification Note - C: 9/28/45. Publ. with I.363 I.364 (1993) [New] [10 pp.] [Publ.: Oct.93] Support of broadband connectionless data service on B-ISDN I.365.1 (11/93) [New] [8 pp.] [Publ.: Nov.94] Frame relaying service specific convergence sublayer (FR-SSCS) Note - C: 9/28/45 * General network requirements and functions I.370 (10/91) [New] [10 pp.] [Publ.: Jan.92] Congestion management for the ISDN frame relaying bearer service I.371 (1993) [New] [26 pp.] [Publ.: Nov.93] Traffic control and congestion control in B-ISDN I.372 (1993) [New] [10 pp.] [Publ.: Nov.93] Frame relaying bearer service network-to-netwrok interface requirements I.373 (1993) [New] [16 pp.] [Publ.: Nov.93] Network capabilities to support universal personal telecommunication (UPT) I.374 (1993) [New] [7 pp.] [Publ.: Nov.93] Framework Recommendation on "network capabilities to support multimedia services" I.376 (03/95) [New] [Publ. sched.: Jul.95] ISDN network capabilities for the support of teleaction service Note - C: 90/118/141 * General I.410 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] General aspects and principles relating to Recommendations on ISDN user-network interfaces I.411 (1993) [Rev.1] [7 pp.] [Publ.: Nov.93] ISDN user-network interfaces - Reference configurations I.412 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] ISDN user-network interfaces - Interface structures and access capabilities I.413 (1993) [Rev.1] [9 pp.] [Publ.: Dec.93] B-ISDN user-network interface I.414 (1993) [New] [5 pp.] [Publ.: Oct.93] Overview of Recommendations on layer 1 for ISDN and B-ISDN customer accesses I.420 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] Basic user-network interface I.421 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] Primary rate user-network interface * Layer 1 Recommendations I.430 (1993) [Rev.1] [97 pp.] [Publ.: Mar.94] Basic user-network interface - Layer 1 specification I.431 (1993) [Rev.1] [39 pp.] [Publ.: Jan.94] Primary rate user-network interface - Layer 1 specification I.432 (1993) [Rev.1] [36 pp.] [Publ.: Jan.94] B-ISDN user-network interface - Physical layer specification * Layer 2 Recommendations I.440 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] ISDN user-network interface data link layer - General aspects Note - Same as Q.920 I.441 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] ISDN user-network interface, data link layer specification Note - Same as Q.921 * Layer 3 Recommendations I.450 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] ISDN user-network interface layer 3 - General aspects Note - Same as Q.930 I.451 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] ISDN user-network interface layer 3 specification for basic call control Note - Same as Q.931 I.452 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] Generic procedures for the control of ISDN supplementary services Note - Same as Q.932 * Multiplexing, rate adaption and support of existing interfaces I.460 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] Multiplexing, rate adaption and support of existing interfaces I.461 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] Support of X.21, X.21 bis and X.20 bis based data terminal equipments (DTES) by an integrated services digital network (ISDN) Note - Same as X.30 I.462 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] Support of packet mode terminal equipment by an ISDN Note - Same as X.31 I.463 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] Support of data terminal equipments (DTES) with V-series type interfaces by an integrated services digital network (ISDN) Note - Same as V.110 I.464 (10/91) [Rev.1] [1 pp.] [Publ.: Dec.91] Multiplexing, rate adaption and support of existing interfaces for restricted 64 kbit/s transfer capability I.465 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] Support by an ISDN of data terminal equipment with V-series type interfaces with provision for statistical multiplexing Note - Same as V.120 * Aspects of ISDN affecting terminal requirements I.470 (1988) [Blue Book Fasc. III.8] [Publ.: Jul.89] Relationship of terminal functions to ISDN * Internetwork interfaces I.500 (1993) [Rev.1] [4 pp.] [Publ.: Dec.93] General structure of the ISDN interworking Recommendations I.501 (1993) [New] [8 pp.] [Publ.: Nov.93] Service interworking I.510 (1993) [Rev.1] [12 pp.] [Publ.: Dec.93] Definitions and general principles for ISDN interworking I.511 (1988) [Blue Book Fasc. III.9] [Publ.: Jul.89] ISDN-to-ISDN layer 1 internetwork interface I.515 (1993) [Rev.1] [15 pp.] [Publ.: Jan.94] Parameter exchange for ISDN interworking I.520 (1993) [Rev.1] [12 pp.] [Publ.: Dec.93] General arrangements for network interworking between ISDNs I.525 (1993) [New] [10 pp.] [Publ.: Nov.93] Interworking between ISDN and networks which operate at bit rates of less than 64 kbit/s I.530 (1993) [Rev.1] [10 pp.] [Publ.: Dec.93] Network interworking between an ISDN and a public switched telephone network (PSTN) I.540 (1988) [Blue Book Fasc. III.9] [Publ.: Jul.89] General arrangements for interworking between circuit switched public data networks (CSPDNs) and integrated services digital networks (ISDNs) for the provision of data transmission Note - Same as X.321 I.550 (1988) [Blue Book Fasc. III.9] [Publ.: Jul.89] General arrangements for interworking between packet switched public data networks (PSPDNs) and integrated services digital networks (ISDNs) for the provision of data transmission Note - Same as X.325 I.555 (11/93) [New] [21 pp.] [Publ.: Nov.94] Frame relaying bearer service interworking Note - C: 9/28/45 I.560 (1988) [Blue Book Fasc. III.9] [Publ.: Jul.89] Requirements to be met in providing the telex service within the ISDN Note - Same as U.202 I.570 (1993) [New] [7 pp.] [Publ.: Oct.93] Public/private ISDN interworking I.580 (1993) [New] [21 pp.] [Publ.: Nov.93] General arrangements for interworking between B-ISDN and 64 kbit/s based ISDN * Maintenance principles I.601 (1988) [Blue Book Fasc. III.9] [Publ.: Jul.89] General maintenance principles of ISDN subscriber access and subscriber installation I.610 (1993) [Rev.1] [23 pp.] [Publ.: Jan.94] B-ISDN operation and maintenance principles and functions ---------------------------------------------------------------------- Some 1120 Recommendations from the Blue Book are still in force. They are included in fascicles and volumes of the Blue Book that may still be purchased from the ITU Sales Service. Since the beginning of the 1988-1993 Study Period ("post Blue Book") ITU-T Recommendations are published and offered for sale individually (in separate fascicles). 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