G - Transmission systems and media, digital systems and networks

Series G: Transmission systems and media, digital systems and networks


G.100-G.199: International telephone connections and circuits

G.100-G.109: General definitions
G.100	02-2001	Definitions used in Recommendations on general characteristics of international telephone connections and circuits
G.100.1	11-2001	The use of the decibel and of relative levels in speechband telecommunications
G.101	11-2003	The transmission plan
G.102	11-1988	Transmission performance objectives and Recommendations
G.103	12-1998	Hypothetical reference connections
G.105	11-1988	Hypothetical reference connection for crosstalk studies
G.107	03-2003	The E-model, a computational model for use in transmission planning
G.108	09-1999	Application of the E-model: A planning guide Covering note, November 2000: Erratum
G.108 Erratum 1	12-2000
G.108 (1999) Amendment 1	09-2003	New Appendix I – The relationship between and interaction of talker echo and absolute delay
G.108 (1999) Amendment 2	03-2004	New Appendix II – Planning examples regarding delay in packet-based networks
G.108.1	05-2000	Guidance for assessing conversational speech transmission quality effects not covered by the E-model
G.108.2	01-2003	Transmission planning aspects of echo cancellers
G.109	09-1999	Definition of categories of speech transmission quality

G.110-G.119: General Recommendations on the transmission quality for an entire international telephone connection
G.111	03-1993	Loudness ratings (LRs) in an international connection
G.113	02-2001	Transmission impairments due to speech processing Appendix I in G.113 was revised by 10/2001 version
G.113 Appendix I	05-2002	Provisional planning values for the equipment impairment factor Ie and packet-loss robustness factor Bpl
G.114	05-2003	One-way transmission time
G.114 (2003) Amendment 1	09-2003	New Appendix II: Guidance on one-way delay for Voice over IP The text introduced by this amendment was directly included in G.114 (05/2003)	Pre-published.
G.115	02-1996	Mean active speech level for announcement and speech synthesis systems
G.116	09-1999	Transmission performance objectives applicable to end-to-end international connections
G.117	02-1996	Transmission aspects of unbalance about earth

G.120-G.129: General characteristics of national systems forming part of international connections
G.120	12-1998	Transmission characteristics of national networks
G.121	03-1993	Loudness ratings (LRs) of national systems
G.122	03-1993	Influence of national systems on stability and talker echo in international connections
G.123	11-1988	Circuit noise in national networks The content of this Recommendation is now covered by ITU-T G.120
G.125	11-1988	Characteristics of national circuits on carrier systems The content of this Recommendation is now covered by ITU-T G.120
G.126	03-1993	Listener echo in telephone networks

G.130-G.139: General characteristics of the 4-wire chain formed by the international circuits and national extension circuits
G.131	11-2003	Talker echo and its control
G.132	11-1988	Attenuation distortion The content of this Recommendation is now covered by ITU-T G.120
G.133	11-1988	Group-delay distortion The content of this Recommendation is now covered by ITU-T G.120
G.134	11-1988	Linear crosstalk The content of this Recommendation is now covered by ITU-T G.120
G.135	11-1988	Error on the reconstituted frequency The content of this Recommendation is now covered by ITU-T G.120
G.136	09-1999	Application rules for Automatic Level Control Devices Covering note, May 2000: Erratum
G.136 Erratum 1	12-2000

G.140-G.149: General characteristics of the 4-wire chain of international circuits; international transit
G.141	11-1988	Attenuation distortion The content of this Recommendation is now covered by ITU-T G.120
G.142	12-1998	Transmission characteristics of exchanges
G.143	11-1988	Circuit noise and the use of compandors Deleted because it deals with compandor transmission aspects, which use is no more recommended in networks

G.150-G.159: General characteristics of international telephone circuits and national extension circuits
G.151	11-1988	General performance objectives applicable to all modern international circuits and national extension circuits The content of this Recommendation is now covered by ITU-T G.120
G.152	11-1988	Characteristics appropriate to long-distance circuits of a length not exceeding 2500 km The content of this Recommendation is now covered by ITU-T G.120
G.153	11-1988	Characteristics appropriate to international circuits more than 2500 km in length The content of this Recommendation is now covered by ITU-T G.120

G.160-G.169: Apparatus associated with long-distance telephone circuits
G.161	10-1976	Echo-suppressors suitable for circuits having either short or long propagation times Deleted after its content became technically out of date
G.161	06-2004	Interaction aspects of signal processing network equipment
G.162	11-1988	Characteristics of compandors for telephony Deleted because it deals with compandor transmission aspects, which use is no more recommended in networks
G.163	11-1988	Call concentrating systems Deleted after its content became technically out of date
G.164	11-1988	Echo suppressors
G.165	03-1993	Echo cancellers
G.166	11-1988	Characteristics of syllabic compandors for telephony on high capacity long distance systems Deleted because it deals with compandor transmission aspects, which use is no more recommended in networks
G.167	03-1993	Acoustic echo controllers Withdrawn on 14 Feb. 2004, its content being now covered by ITU-T Rec. P.340 (2000) (clauses 1-5 of G.167) and G.161 (2002) (section 6 of G.167)
G.168	08-2004	Digital network echo cancellers
G.169	07-1999	Automatic level control devices

G.170-G.179: Transmission plan aspects of special circuits and connections using the international telephone connection network
G.171	11-1988	Transmission plan aspects of privately operated networks Deleted on 21.01.2000 because it refers to obsolete Recommendations. For guidance on transmission planning or on private/public network interconnection, refer to ITU-T G.175 and G.108
G.172	11-1988	Transmission plan aspects of international conference calls
G.173	03-1993	Transmission planning aspects of the speech service in digital public land mobile networks
G.174	06-1994	Transmission performance objectives for terrestrial digital wireless systems using portable terminals to access the PSTN
G.175	05-2000	Transmission planning for private/public network interconnection of voice traffic
G.176	04-1997	Planning guidelines for the integration of ATM technology into networks supporting voiceband services
G.177	09-1999	Transmission planning for voiceband services over hybrid Internet/PSTN connections

G.180-G.189: Protection and restoration of transmission systems
G.180	03-1993	Characteristics of N + M type direct transmission restoration systems for use on digital and analogue sections, links or equipment
G.181	03-1993	Characteristics of 1 + 1 type restoration systems for use on digital transmission links

G.190-G.199: Software tools for transmission systems
G.191	11-2000	Software tools for speech and audio coding standardization This Recommendation includes 1 CD-ROM containing the software tools library (STL-2000) ). The STL-2000 Manual is freely available from this Website for information purpose.
G.192	03-1996	A common digital parallel interface for speech standardization activities

G.200-G.299: General characteristics common to all analogue carrier-transmission systems

G.210-G.219: Definitions and general considerations
G.211	11-1988	Make-up of a carrier link
G.212	11-1988	Hypothetical reference circuits for analogue systems
G.213	11-1988	Interconnection of systems in a main repeater station
G.214	11-1988	Line stability of cable systems
G.215	11-1988	Hypothetical reference circuit of 5000 km for analogue systems

G.220-G.229: General Recommendations
G.221	11-1988	Overall recommendations relating to carrier-transmission systems
G.222	11-1988	Noise objectives for design of carrier-transmission systems of 2500 km
G.223	11-1988	Assumptions for the calculation of noise on hypothetical reference circuits for telephony
G.224	11-1988	Maximum permissible value for the absolute power level (power referred to one milliwatt) of a signalling pulse This Recommendation was formerly also included in Q series under number Q.16
G.225	11-1988	Recommendations relating to the accuracy of carrier frequencies
G.226	11-1988	Noise on a real link
G.227	11-1988	Conventional telephone signal
G.228	11-1988	Measurement of circuit noise in cable systems using a uniform-spectrum random noise loading
G.229	11-1988	Unwanted modulation and phase jitter

G.230-G.239: Translating equipment used on various carrier-transmission systems
G.230	11-1988	Measuring methods for noise produced by modulating equipment and through-connection filters
G.231	11-1988	Arrangement of carrier equipment
G.232	11-1988	12-channel terminal equipments
G.233	11-1988	Recommendations concerning translating equipments
G.234	10-1976	8-channel terminal equipments Deleted after its content became technically out of date
G.235	11-1988	16-channel terminal equipments Deleted after its content became technically out of date

G.240-G.299: Utilization of groups, supergroups, etc.
G.241	11-1988	Pilots on groups, supergroups, etc.
G.242	11-1988	Through-connection of groups, supergroups, etc.
G.243	11-1988	Protection of pilots and additional measuring frequencies at points where there is a through-connection

G.300-G.399: Individual characteristics of international carrier telephone systems on metallic lines
G.311	11-1988	General characteristics of systems providing 12 carrier telephone circuits on an open-wire pair Deleted after its content became technically out of date
G.312	11-1988	Intermediate repeaters for open-wire carrier systems conforming to Recommendation G.311 Deleted after its content became technically out of date
G.313	11-1988	Open-wire lines for use with 12-channel carrier systems Deleted after its content became technically out of date
G.314	10-1976	General characteristics of systems providing eight carrier telephone circuits on an open-wire pair Deleted after its content became technically out of date

G.320-G.329: Carrier telephone systems on unloaded symmetric cable pairs, providing groups or supergroups
G.322	11-1988	General characteristics recommended for systems on symmetric pair cables
G.323	11-1988	A typical transistorized system on symmetric cable pairs Deleted after its content became technically out of date
G.324	10-1976	General characteristics for valve-type systems on symmetric cable pairs Deleted after its content became technically out of date
G.325	11-1988	General characteristics recommended for systems providing 12 telephone carrier circuits on a symmetric cable pair [(12 + 12) systems]
G.326	11-1988	Typical systems on symmetric cable pairs [(12 + 12) systems] Deleted after its content became technically out of date
G.327	10-1976	Valve-type systems offering 12 carrier telephone circuits on a symmetric cable pair [(12 + 12) systems] Deleted after its content became technically out of date

G.330-G.339: Carrier systems on 2.6/9.5 mm coaxial cable pairs
G.332	11-1988	12 MHz systems on standardized 2.6/9.5 mm coaxial cable pairs
G.333	11-1988	60 MHz systems on standardized 2.6/9.5 mm coaxial cable pairs
G.334	11-1988	18 MHz systems on standardized 2.6/9.5 mm coaxial cable pairs
G.337	10-1976	General characteristics of systems on 2.6/9.5 mm coaxial cable pairs Deleted after its content became technically out of date
G.338	10-1976	4 MHz valve-type systems on standardized 2.6/9.5 mm coaxial cable pairs Deleted after its content became technically out of date
G.339	10-1976	12 MHz valve-type systems on standardized 2.6/9.5 mm coaxial cable pairs Deleted after its content became technically out of date

G.340-G.349: Carrier systems on 1.2/4.4 mm coaxial cable pairs
G.341	11-1988	1.3 MHz systems on standardized 1.2/4.4 mm coaxial cable pairs
G.343	11-1988	4 MHz systems on standardized 1.2/4.4 mm coaxial cable pairs
G.344	11-1988	6 MHz systems on standardized 1.2/4.4 mm coaxial cable pairs
G.345	11-1988	12 MHz systems on standardized 1.2/4.4 mm coaxial cable pairs
G.346	11-1988	18 MHz systems on standardized 1.2/4.4 mm coaxial cable pairs

G.350-G.399: Additional Recommendations on cable systems
G.352	11-1988	Interconnection of coaxial carrier systems of different designs
G.356	11-1980	(120 + 120) channel systems on a single coaxial pair Deleted after its content became technically out of date
G.361	11-1988	Systems providing three carrier telephone circuits on a pair of open-wire lines Deleted after its content became technically out of date
G.371	11-1988	FDM carrier systems for submarine cable Deleted after its content became technically out of date

G.400-G.449: General characteristics of international carrier telephone systems on radio-relay or satellite links and interconnection with metallic lines

G.400-G.419: General Recommendations
G.411	11-1988	Use of radio-relay systems for international telephone circuits
G.412	11-1988	Terminal equipments of radio-relay systems forming part of a general telecommunication network Deleted after its content became technically out of date

G.420-G.429: Interconnection of radio-relay links with carrier systems on metallic lines
G.421	11-1988	Methods of interconnection
G.422	11-1988	Interconnection at audio-frequencies
G.423	11-1988	Interconnection at the baseband frequencies of frequency-division multiplex radio-relay systems

G.430-G.439: Hypothetical reference circuits
G.431	11-1988	Hypothetical reference circuits for frequency-division multiplex radio-relay systems
G.433	11-1988	Hypothetical reference circuit for trans-horizon radio-relay systems for telephony using frequency-division multiplex The text of this Recommendation can be found in CCIR Rec. 396 (1986). Deleted after its content became technically out of date
G.434	11-1988	Hypothetical reference circuit for systems using analogue transmission in the fixed-satellite service The text of this Recommendation can be found in CCIR Rec. 352 (1986). Deleted after its content became technically out of date

G.440-G.449: Circuit noise
G.441	11-1988	Permissible circuit noise on frequency-division multiplex radio-relay systems
G.442	11-1988	Radio-relay system design objectives for noise at the far end of a hypothetical reference circuit with reference to telegraphy transmission
G.444	11-1988	Allowable noise power in the hypothetical reference circuit of trans-horizon radio-relay systems for telephony using frequency-division multiplex The text of this Recommendation can be found in CCIR Rec. 397 (1986). Deleted after its content became technically out of date
G.445	11-1988	Allowable noise power in the hypothetical reference circuit for frequency-division multiplex telephony in the fixed-satellite service The text of this Recommendation can be found in CCIR Rec. 353 (1986). Deleted after its content became technically out of date

G.450-G.499: Coordination of radiotelephony and line telephony

G.450-G.469: Radiotelephone circuits
G.451	11-1988	Use of radio links in international telephone circuits
G.453	11-1988	Improved transmission system for HF radio-telephone circuits The text of this Recommendation can be found in CCIR Rec. 455 and Report 354 entitled "Improved transmission systems for use over HF radiotelephone circuits (1986). Deleted after its content became technically out of date
G.464	11-1988	Principles of the devices used to achieve privacy in radiotelephone conversations The text of this Recommendation can be found in CCIR Rec. 336 (1986). Deleted after its content became technically out of date

G.470-G.499: Links with mobile stations
G.473	11-1988	Interconnection of a maritime mobile satellite system with the international automatic switched telephone service; transmission aspects Withdrawn because it provided transmission planning information that was obsolete and no longer used
G.541	10-1976	Specification of factory lengths of loaded telecommunication cable Deleted after its content became technically out of date
G.542	10-1976	Specification of loading coils for loaded telecommunication cables Deleted after its content became technically out of date
G.543	10-1976	Specification for repeater sections of loaded telecommunication cable Deleted after its content became technically out of date
G.544	10-1976	Specifications for terminal equipment and intermediate repeater stations Deleted after its content became technically out of date

G.600-G.699: Transmission media characteristics

G.600-G.609: General
G.601	11-1988	Terminology for cables
G.602	11-1988	Reliability and availability of analogue cable transmission systems and associated equipments

G.610-G.619: Symmetric cable pairs
G.611	11-1988	Characteristics of symmetric cable pairs for analogue transmission
G.612	11-1988	Characteristics of symmetric cable pairs designed for the transmission of systems with bit rates of the order of 6 to 34 Mbit/s
G.613	11-1988	Characteristics of symmetric cable pairs usable wholly for the transmission of digital systems with a bit rate of up to 2 Mbit/s
G.614	11-1988	Characteristics of symmetric pair star-quad cables designed earlier for analogue transmission systems and being used now for digital system transmission at bit rates of 6 to 34 Mbit/s

G.620-G.629: Land coaxial cable pairs
G.621	11-1988	Characteristics of 0.7/2.9 mm coaxial cable pairs
G.622	11-1988	Characteristics of 1.2/4.4 mm coaxial cable pairs
G.623	11-1988	Characteristics of 2.6/9.5 mm coaxial cable pairs

G.630-G.649: Submarine cables
G.631	11-1988	Types of submarine cable to be used for systems with line frequencies of less than about 45 MHz
G.641	11-1988	Waveguide diameters Deleted after its content became technically out of date

G.650-G.659: Optical fibre cables
G.650.1	06-2004	Definitions and test methods for linear, deterministic attributes of single-mode fibre and cable
G.650.2	01-2005	Definitions and test methods for statistical and non-linear related attributes of single-mode fibre and cable	Pre-published.
G.651	02-1998	Characteristics of a 50/125 µm multimode graded index optical fibre cable
G.652	03-2003	Characteristics of a single-mode optical fibre and cable
G.653	12-2003	Characteristics of a dispersion-shifted single-mode optical fibre and cable
G.654	06-2004	Characteristics of a cut-off shifted single-mode optical fibre and cable
G.655	03-2003	Characteristics of a non-zero dispersion-shifted single-mode optical fibre and cable
G.656	06-2004	Characteristics of a fibre and cable with non-zero dispersion for wideband optical transport

G.660-G.699: Characteristics of optical components and subsystems
G.661	10-1998	Definition and test methods for the relevant generic parameters of optical amplifier devices and subsystems
G.662	10-1998	Generic characteristics of optical amplifier devices and subsystems
G.663	04-2000	Application related aspects of optical amplifier devices and subsystems
G.663 (2000) Amendment 1	01-2003	Amendements to Appendix II
G.664	03-2003	Optical safety procedures and requirements for optical transport systems
G.664 (2003) Amendment 1	01-2005		Pre-published.
G.665	01-2005	Generic characteristics of Raman amplifiers and Raman amplified subsystems	Not available, contact sales@itu.int.
G.671	01-2005	Transmission characteristics of optical components and subsystems	Pre-published.
G.681	10-1996	Functional characteristics of interoffice and long-haul line systems using optical amplifiers, including optical multiplexing Deleted since its content is covered by Recommendations G.664 and G.783
G.691	12-2003	Optical interfaces for single channel STM-64 and other SDH systems with optical amplifiers
G.691 (2003) Amendement 1	01-2005		Pre-published.
G.692	10-1998	Optical interfaces for multichannel systems with optical amplifiers Covering note, 07.01.2000: Corrigendum 1
G.692 (1998) Corrigendum 1	01-2000
G.692 (1998) Corrigendum 2	06-2002
G.692 (1998) Amend.1	01-2005		Not available, contact sales@itu.int.
G.693	01-2005	Optical interfaces for intra-office systems	Pre-published.
G.694.1	06-2002	Spectral grids for WDM applications: DWDM frequency grid
G.694.2	12-2003	Spectral grids for WDM applications: CWDM wavelength grid
G.695	01-2005	Optical interfaces for coarse wavelength division multiplexing applications	Pre-published.
G.697	06-2004	Optical monitoring for DWDM systems

G.700-G.799: Digital terminal equipments

G.700-G.709: General
G.700	11-1988	Framework of the series G.700, G.800 and G.900 Recommendations Deleted after its content became technically out of date
G.701	03-1993	Vocabulary of digital transmission and multiplexing, and pulse code modulation (PCM) terms
G.702	11-1988	Digital hierarchy bit rates
G.703	11-2001	Physical/electrical characteristics of hierarchical digital interfaces
G.704	10-1998	Synchronous frame structures used at 1544, 6312, 2048, 8448 and 44 736 kbit/s hierarchical levels
G.705	11-1988	Characteristics required to terminate digital links on a digital exchange The content of this Recommendation is now covered by ITU-T Q.500 series, and more specifically Q.554
G.705	10-2000	Characteristics of plesiochronous digital hierarchy (PDH) equipment functional blocks
G.706	04-1991	Frame alignment and cyclic redundancy check (CRC) procedures relating to basic frame structures defined in Recommendation G.704
G.707/Y.1322	12-2003	Network node interface for the synchronous digital hierarchy (SDH)
G.707/Y.1322 (2003) Corrigendum 1	06-2004
G.707/Y.1322 Amendment 1	08-2004
G.708	03-1993	Network node interface for the synchronous digital hierarchy Merged with ITU-T G.707 in 1996
G.708	07-1999	Sub STM-0 network node interface for the synchronous digital hierarchy (SDH)
G.709	03-1993	Synchronous multiplexing structure Merged with ITU-T G.707 in 1993
G.709/Y.1331	03-2003	Interfaces for the Optical Transport Network (OTN)
G.709/Y.1331 (2003) Amendment 1	12-2003		Pre-published.

G.710-G.719: Coding of analogue signals by pulse code modulation
G.711	11-1988	Pulse code modulation (PCM) of voice frequencies Corresponding ANSI-C code is available in the G.711 module of the ITU-T G.191 Software Tools Library.
G.711 Appendix I	09-1999	A high quality low-complexity algorithm for packet loss concealment with G.711
G.711 Appendix II	02-2000	A comfort noise payload definition for ITU-T G.711 use in packet-based multimedia communication systems
G.712	11-2001	Transmission performance characteristics of pulse code modulation channels
G.713	11-1988	Performance characteristics of PCM channels between 2-wire interfaces at voice frequencies The content of this Recommendation is now covered by ITU-T G.712
G.714	11-1988	Separate performance characteristics for the encoding and decoding sides of PCM channels applicable to 4-wire voice-frequency interfaces The content of this Recommendation is now covered by ITU-T G.712
G.715	11-1988	Separate performance characteristics for the encoding and decoding side of PCM channels applicable to 2-wire interfaces The content of this Recommendation is now covered by ITU-T G.712

G.720-G.729: Coding of analogue signals by methods other than PCM
G.720	07-1995	Characterization of low-rate digital voice coder performance with non-voice signals
G.722	11-1988	7 kHz audio-coding within 64 kbit/s Corresponding ANSI-C code is available in the G722 module of the ITU-T G.191 Software Tools Library
G.722 (1988) Erratum 1	05-2003
G.722 Annex A	03-1993	Testing signal-to-total distortion ratio for 7 kHz audio-codecs at 64 kbit/s Recommendation G.722 connected back-to-back
G.722 Appendix II	03-1987	Digital test sequences for the verification of the G.722 64 kbit/s SB-ADPCM 7 kHz codec This document corresponds to ITU-T Rec. G.722 Appendix II which was published in the Blue Book (1988). It includes one diskette containing the digital test sequences for the verification of the G.722 SB-ADPCM codec.
G.722.1	09-1999	Coding at 24 and 32 kbit/s for hands-free operation in systems with low frame loss This Recommendation includes an electronic attachment containing the reference code (release 1.2) and the test vectors for ITU-T G.722.1 algorithm implementation verification. This release includes the corrections indicated in corrigendum 1 (11/2000)	Available only in MS Word.
G.722.1 (1999) Corrigendum 1	11-2000
G.722.1 Annex A	02-2000	Packet format, capability identifiers and capability parameters
G.722.1 Annex B	11-2000	Floating-point implementation for G.772.1 This annex includes an electronic attachment containing the reference code and the test vectors for ITU-T G.722.1/Annex B floating-point algorithm implementation verification	Available only in MS Word.
G.722.2	07-2003	Wideband coding of speech at around 16 kbit/s using Adaptive Multi-Rate Wideband (AMR-WB)
G.722.2 (2003) Erratum 1	06-2004	Applies to English version only
G.722.2 Annex A	01-2002	Comfort noise aspects
G.722.2 Annex B	01-2002	Source Controlled Rate operation
G.722.2 Annex B (2002) Erratum 1	07-2003
G.722.2 Annex C	03-2004	Fixed-point C-code
G.722.2 Annex C (2004) Erratum 1	06-2004	Applies only to English version	Not available, contact sales@itu.int.
G.722.2 Annex D	07-2003	Digital test sequences This Annex includes an electronic attachment containing the digital test sequences for a bit-exact implementation of the G.722.2 adaptive multi-rate wideband (AMR-WB) speech transcoder, voice activity detection, comfort noise generation, and source controlled rate operation, version 5.7.0. Test sequences are freely available on the ITU publications website. They are also available for a fee on a CD-ROM from the ITU Sales department at sales@itu.int
G.722.2 Annex E	01-2002	Frame structure
G.722.2 Annex E (2002) Corrigendum 1	07-2003	Published as a covering note
G.722.2 Annex F	11-2002	AMR-WB usage in H.245
G.722.2 Appendix 1	01-2002	Error concealment of erroneous or lost frames
G.722.2 Appendix I (2002) Amendment 1	07-2003	Published as a covering note
G.723	11-1988	Extensions of Recommendation G.721 adaptive differential pulse code modulation to 24 and 40 kbit/s for digital circuit multiplication equipment application The content of 1988 edition of ITU-T G.723 is now covered by ITU-T G.726

*G.723 Speech coders*
G.723.1	03-1996	Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s Test vectors, test sequences and C Reference code described in this Recommendation are common to Recommendation main body and to Annex A, and may be found on 3 diskettes included with G.723.1 Annex A.
G.723.1 Annex A	11-1996	Silence compression scheme This Annex includes 3 diskettes which are common to Recommendation main body and to this annex and which contain test vectors and C reference code for implementation verification of the G.723.1 fixed point dual rate speech coder for multimedia communications.
G.723.1 Annex B	11-1996	Alternative specification based on floating point arithmetic This Annex includes one CD-ROM containing the reference code and the test vectors for implementation verification of the G.723.1 floating point speech coder. The CD-ROM may be replaced on demand by 14 diskettes.
G.723.1 Annex C	11-1996	Scalable channel coding scheme for wireless applications This Annex includes one diskette containing the reference code and the test vectors for implementation verification of the scalable channel coding scheme.
G.724	11-1988	Characteristics of a 48-channel low bit rate encoding primary multiplex operating at 1544 kbit/s
G.725	11-1988	System aspects for the use of the 7 kHz audio codec within 64 kbit/s
G.726	12-1990	40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM) Corresponding ANSI-C code is available in the G.726 module of the ITU-T G.191 Software Tools Library
G.726 Annex A	11-1994	Extensions of Recommendation G.726 for use with uniform-quantized input and output
G.726 Annex B	07-2003	Packet format, capability identifier and capability parameters for H.245 signalling
G.726 Appendix II	03-1991	Digital test sequences for the verification of the G.726 40, 32, 24 and 16 kbit/s ADPCM algorithm This document corresponds to G.726 Appendix II. It includes 2 diskettes containing respectively the A-Law and Mu-Law digital test sequences for the verification of the G.726 ADPCM codec implementations. The document reproduces the user guide published in the CCITT collective letter No. 11/XV (1991).	Available only in MS Word.
G.726 Appendix III	05-1994	Comparison of ADPCM algorithms This Appendix is published with the double number G.726 App. III and G.727 App. II
G.727	12-1990	5-, 4-, 3- and 2-bit/sample embedded adaptive differential pulse code modulation (ADPCM) Corresponding ANSI-C code is available in the G.727 module of the ITU-T G.191 Software Tools Library
G.727 Annex A	11-1994	Extensions of Recommendation G.727 for use with uniform-quantized input and output
G.727 Appendix I	03-1991	Digital test sequences for the verification of the G.727 5-, 4-, 3- and 2-bit/sample embedded ADPCM algorithm This document corresponds to G.727 Appendix I. It includes 6 diskettes containing digital test sequences for the verification of the G.727 embedded ADPCM codec implementations. The document reproduces the user guide published in the CCITT collective letter No. 12/XV (1991).	Available only in MS Word.
G.727 Appendix II	05-1994	Comparison of ADPCM algorithms This Appendix is published with the double number G.726 App. III and G.727 App. II
G.728	09-1992	Coding of speech at 16 kbit/s using low-delay code excited linear prediction
G.728 Annex G	11-1994	16 kbit/s fixed point specification
G.728 Annex G (1994) Corrigendum 1	02-2000
G.728 Annex H	05-1999	Variable bit rate LD-CELP operation mainly for DCME at rates less than 16 kbit/s This Annex includes 1 CD-ROM containing the test data for verification of G.728 Annex H low bit rate LD-CELP implementations.
G.728 Annex I	05-1999	Frame or packet loss concealment for the LD-CELP decoder
G.728 Annex J	09-1999	Variable bit-rate operation of LD-CELP mainly for voiceband-data applications in DCME This Annex includes 1 CD-ROM containing the test vectors for verification of G.728 Annex J variable bit-rate LD-CELP implementations.
G.728 Appendix I	07-1995	Programs and test sequences for implementation verification of the algorithm of the G.728 16 kbit/s LD-CELP speech coder This document corresponds to G.728 Appendix I. It includes 4 diskettes containing programs and test sequences for verification of the floating point and fixed point implementations of the G.728 LD-CELP algorithm. The document reproduces the user guide published in the CCITT collective letter No. 17/XV (1992).
G.728 Appendix II	11-1995	Speech performance
G.729	03-1996	Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear prediction (CS-ACELP) This Recommendation includes 3 diskettes containing source code and test sequences for implementation verification of the algorithm of the G.729 8 kbit/s CS-ACELP speech coder.
G.729 Annex A	11-1996	Reduced complexity 8 kbit/s CS-ACELP speech codec This Annex includes 3 diskettes containing source code and test sequences for implementation verification of the algorithm of the G.729 reduced complexity 8 kbit/s CS-ACELP speech coder.
G.729 Annex B	10-1996	A silence compression scheme for G.729 optimized for terminals conforming to Recommendation V.70 This Annex includes 1 electronic attachment containing source code and test sequences for implementation verification of the algorithm of the G.729 Silence compression scheme version 1.4, which reflects modifications given in Corrigendum 2 (02/2000).	Available only in MS Word.
G.729 Annex B (1996) Cor.1	02-1998	This corrigendum was not published and concerns only the software; the resulting version 1.3 had been included in the published ITU-T Recommendation G.729 Annex B (10/1996)	Not available, contact sales@itu.int.
G.729 Annex B (1996) Corrigendum 2	02-2000	This corrigendum concerns only the software; the resulting version 1.4 is included in the published ITU-T Recommendation G.729 Annex B (10/1996)
G.729 Annex B (1996) Corrigendum 3	03-2001	Published as a covering note
G.729 Annex C	09-1998	Reference floating-point implementation for G.729 CS-ACELP 8 kbit/s speech coding This Annex includes 1 diskette containing version 1.01 of reference C code for floating point implementation of the G.729 8 kbit/s CS-ACELP speech coder. Diskette + Annex.
G.729 Annex C+	02-2000	Reference floating-point implementation for integrating G.729 CS-ACELP speech coding main body with Annexes B, D and E This annex includes an electronic attachment containing version 2.1 of reference C code for floating point implementation of CS-ACELP at 6.4/8/11.8 kbit/s with DTX functionality.
G.729 Annex C+ (2000) Corrigendum 1	03-2001	Published as a covering note
G.729 Annex D	09-1998	6.4 kbit/s CS-ACELP speech coding algorithm This Annex includes one electronic attachment containing version 1.3 of source C code for fixed point implementation of the G.729 6.4 kbit/s CS-ACELP speech coder, which reflects modifications given in Corrigendum 1 (02/2000).	Available only in MS Word.
G.729 Annex D (1998) Corrigendum 1	02-2000	This corrigendum concerns only the software; the resulting version 1.3 is included in the published ITU-T Recommendation G.729 Annex D (09/1998)
G.729 Annex E	09-1998	11.8 kbit/s CS-ACELP speech coding algorithm This Annex includes one electronic attachment containing version 1.3 of source C code and test vectors for fixed point implementation of the G.729 11.8 kbit/s CS-ACELP speech coder, which reflects modifications given in Corrigendum 1 (02/2000).	Available only in MS Word.
G.729 Annex E (1998) Corrigendum 1	02-2000	This corrigendum concerns only the software; the resulting version 1.3 is included in the published ITU-T Recommendation G.729 Annex E (09/1998)
G.729 Annex F	02-2000	Reference implementation of G.729 Annex B DTX functionality for Annex D This annex includes an electronic attachment containing version 1.1 of reference C code and test vectors for fixed point implementation of CS-ACELP at 6.4 kbit/s 8 kbit/s with DTX functionality.
G.729 Annex F (2000) Corrigendum 1	03-2001	Published as a covering note
G.729 Annex G	02-2000	Reference implementation of G.729 Annex B DTX functionality for Annex E This annex includes an electronic attachment containing version 1.1 of reference C code and test vectors for fixed point implementation of CS-ACELP at 8 kbit/s and 11.8 kbit/s with DTX functionality.
G.729 Annex G (2000) Corrigendum 1	03-2001	Published as a covering note
G.729 Annex H	02-2000	Reference implementation of switching procedure between G.729 Annexes D and E This annex includes an electronic attachment containing version 1.1 of reference C code and test vectors for fixed point implementation of CS-ACELP at 6.4 kbit/s 8 kbit/s and 11.8 kbit/s without DTX functionality.	Available only in MS Word.
G.729 Annex I	02-2000	Reference fixed-point implementation for integrating G.729 CS-ACELP speech coding main body with Annexes B, D and E This annex includes an electronic attachment containing version 1.1 of reference C code and test vectors for fixed point implementation of CS-ACELP at 6.4 kbit/s 8 kbit/s and 11.8 kb/s with DTX functionality.
G.729 Annex I (2000) Corrigendum 1	03-2001	Published as a covering note
G.729 Appendix I	06-2001	External synchronous reset performance for G.729 codecs in systems using external VAD/DTX/CNG

G.730-G.739: Principal characteristics of primary multiplex equipment
G.731	11-1988	Primary PCM multiplex equipment for voice frequencies
G.732	11-1988	Characteristics of primary PCM multiplex equipment operating at 2048 kbit/s
G.733	11-1988	Characteristics of primary PCM multiplex equipment operating at 1544 kbit/s
G.734	11-1988	Characteristics of synchronous digital multiplex equipment operating at 1544 kbit/s
G.735	11-1988	Characteristics of primary PCM multiplex equipment operating at 2048 kbit/s and offering synchronous digital access at 384 kbit/s and/or 64 kbit/s
G.736	03-1993	Characteristics of a synchronous digital multiplex equipment operating at 2048 kbit/s
G.737	11-1988	Characteristics of an external access equipment operating at 2048 kbit/s offering synchronous digital access at 384 kbit/s and/or 64 kbit/s
G.738	11-1988	Characteristics of primary PCM multiplex equipment operating at 2048 kbit/s and offering synchronous digital access at 320 kbit/s and/or 64 kbit/s
G.739	11-1988	Characteristics of an external access equipment operating at 2048 kbit/s offering synchronous digital access at 320 kbit/s and/or 64 kbit/s

G.740-G.749: Principal characteristics of second order multiplex equipment
G.741	11-1988	General considerations on second order multiplex equipments
G.742	11-1988	Second order digital multiplex equipment operating at 8448 kbit/s and using positive justification
G.743	11-1988	Second order digital multiplex equipment operating at 6312 kbit/s and using positive justification
G.744	11-1988	Second order PCM multiplex equipment operating at 8448 kbit/s
G.745	11-1988	Second order digital multiplex equipment operating at 8448 kbit/s and using positive/zero/negative justification
G.746	11-1988	Characteristics of second order PCM multiplex equipment operating at 6312 kbit/s
G.747	11-1988	Second order digital multiplex equipment operating at 6312 kbit/s and multiplexing three tributaries at 2048 kbit/s

G.750-G.759: Principal characteristics of higher order multiplex equipment
G.751	11-1988	Digital multiplex equipments operating at the third order bit rate of 34 368 kbit/s and the fourth order bit rate of 139 264 kbit/s and using positive justification
G.752	11-1988	Characteristics of digital multiplex equipments based on a second order bit rate of 6312 kbit/s and using positive justification
G.753	11-1988	Third order digital multiplex equipment operating at 34 368 kbit/s and using positive/zero/negative justification
G.754	11-1988	Fourth order digital multiplex equipment operating at 139 264 kbit/s and using positive/zero/negative justification
G.755	11-1988	Digital multiplex equipment operating at 139 264 kbit/s and multiplexing three tributaries at 44 736 kbit/s

G.760-G.769: Principal characteristics of transcoder and digital multiplication equipment
G.761	11-1988	General characteristics of a 60-channel transcoder equipment
G.762	11-1988	General characteristics of a 48-channel transcoder equipment
G.763	10-1998	Digital circuit multiplication equipment using G.726 ADPCM and digital speech interpolation This Recommendation includes 2 diskettes. The first one contains A-Law and m-Law test vectors for DCME verification. The second one contains example transmit/receive SDLs. Covering note, May 2000: Erratum
G.763 Erratum 1	12-2000
G.764	12-1990	Voice packetization – Packetized voice protocols
G.764 Appendix I	11-1995	Packetization guide
G.765	09-1992	Packet circuit multiplication equipment
G.765 Appendix I	11-1995	A guide to PCME
G.766	11-1996	Facsimile demodulation/remodulation for digital circuit multiplication equipment
G.767	10-1998	Digital circuit multiplication equipment using 16 kbit/s LD-CELP, digital speech interpolation and facsimile demodulation/remodulation
G.768	03-2001	Digital circuit multiplication equipment using 8 kbit/s CS-ACELP
G.769/Y.1242	06-2004	Circuit multiplication equipment optimized for IP-based networks

G.770-G.779: Operations, administration and maintenance features of transmission equipment
G.771	11-1988	Q-interfaces and associated protocols for transmission equipment in the TMN Deleted after its content became technically out of date
G.772	03-1993	Protected monitoring points provided on digital transmission systems
G.773	03-1993	Protocol suites for Q-interfaces for management of transmission systems
G.774	02-2001	Synchronous digital hierarchy (SDH) – Management information model for the network element view
G.774.1	02-2001	Synchronous digital hierarchy (SDH) – Bidirectional performance monitoring for the network element view
G.774.2	02-2001	Synchronous digital hierarchy (SDH) – Configuration of the payload structure for the network element view
G.774.3	02-2001	Synchronous digital hierarchy (SDH) – Management of multiplex-section protection for the network element view
G.774.4	02-2001	Synchronous digital hierarchy (SDH) – Management of the subnetwork connection protection for the network element view
G.774.5	02-2001	Synchronous digital hierarchy (SDH) – Management of connection supervision functionality (HCS/LCS) for the network element view
G.774.6	02-2001	Synchronous digital hierarchy (SDH) – Unidirectional performance monitoring for the network element view
G.774.7	02-2001	Synchronous digital hierarchy (SDH) – Management of lower order path trace and interface labelling for the network element view
G.774.8	02-2001	Synchronous digital hierarchy (SDH) – Management of radio-relay systems for the network element view
G.774.9	02-2001	Synchronous digital hierarchy (SDH) – Configuration of linear multiplex-section protection for the network element view
G.774.10	02-2001	Synchronous digital hierarchy (SDH) – Multiplex Section (MS) shared protection ring management for the network element view
G.775	10-1998	Loss of Signal (LOS), Alarm Indication Signal (AIS) and Remote Defect Indication (RDI) defect detection and clearance criteria for PDH signals
G.776.1	10-1998	Managed objects for signal processing network elements This Recommendation includes one diskette containing the information model of Signal Processing Network Elements (SPNE).
G.776.3	04-2000	ADPCM DCME configuration map report

G.780-G.789: Principal characteristics of multiplexing equipment for the synchronous digital hierarchy
G.780/Y.1351	07-2004	Terms and definitions for synchronous digital hierarchy (SDH) networks
G.781	01-1994	Structure of Recommendations on equipment for the synchronous digital hierarchy (SDH) Merged with ITU-T G.783 in 1997
G.781	07-1999	Synchronization layer functions
G.781 (1999) Corrigendum 1	06-2004
G.782	01-1994	Types and general characteristics of synchronous digital hierarchy (SDH) equipment Merged with ITU-T G.783 in 1997
G.783	02-2004	Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks
G.783 (2004) Corrigendum 1	06-2004
G.784	07-1999	Synchronous digital hierarchy (SDH) management
G.785	11-1996	Characteristics of a flexible multiplexer in a synchronous digital hierarchy environment

G.790-G.799: Other terminal equipment
G.791	11-1988	General considerations on transmultiplexing equipments
G.792	11-1988	Characteristics common to all transmultiplexing equipments
G.793	11-1988	Characteristics of 60-channel transmultiplexing equipments
G.794	11-1988	Characteristics of 24-channel transmultiplexing equipments
G.795	11-1988	Characteristics of codecs for FDM assemblies
G.796	09-1992	Characteristics of a 64 kbit/s cross-connect equipment with 2048 kbit/s access ports
G.796 (2000) Corrigendum 1	10-1998
G.797	03-1996	Characteristics of a flexible multiplexer in a plesiochronous digital hierarchy environment
G.798	06-2004	Characteristics of optical transport network hierarchy equipment functional blocks	Pre-published.
G.799.1/Y.1451.1	06-2004	Functionality and interface specifications for GSTN transport network equipment for interconnecting GSTN and IP networks

G.800-G.899: Digital networks

G.800-G.809: General aspects
G.801	11-1988	Digital transmission models
G.802	11-1988	Interworking between networks based on different digital hierarchies and speech encoding laws
G.803	03-2000	Architecture of transport networks based on the synchronous digital hierarchy (SDH)
G.804	06-2004	ATM cell mapping into plesiochronous digital hierarchy (PDH)	Pre-published.
G.805	03-2000	Generic functional architecture of transport networks
G.806	02-2004	Characteristics of transport equipment – Description methodology and generic functionality
G.806 (2004) Amendment 1	06-2004
G.806 Corrigendum 1	08-2004		Pre-published.
G.806 (2004) Corrigendum 2	01-2005		Pre-published.
G.807/Y.1302	07-2001	Requirements for automatic switched transport networks (ASTN)
G.808.1	12-2003	Generic protection switching – Linear trail and subnetwork protection
G.809	03-2003	Functional architecture of connectionless layer networks

G.810-G.819: Design objectives for digital networks
G.810	08-1996	Definitions and terminology for synchronization networks
G.810 (1996) Corrigendum 1	11-2001
G.811	09-1997	Timing characteristics of primary reference clocks
G.812	06-2004	Timing requirements of slave clocks suitable for use as node clocks in synchronization networks
G.813	03-2003	Timing characteristics of SDH equipment slave clocks (SEC)

G.820-G.829: Quality and availability targets
G.820/I.351/Y.1501	07-2004	Relationships among ISDN, IP-based network and physical layer performance Recommendations
G.821	12-2002	Error performance of an international digital connection operating at a bit rate below the primary rate and forming part of an Integrated Services Digital Network
G.822	11-1988	Controlled slip rate objectives on an international digital connection
G.823	03-2000	The control of jitter and wander within digital networks which are based on the 2048 kbit/s hierarchy
G.824	03-2000	The control of jitter and wander within digital networks which are based on the 1544 kbit/s hierarchy
G.825	03-2000	The control of jitter and wander within digital networks which are based on the synchronous digital hierarchy (SDH)
G.825 Erratum 1	08-2001
G.826	12-2002	End-to-end error performance parameters and objectives for international, constant bit-rate digital paths and connections
G.827.1	11-2000	Availability performance objectives for end-to-end international constant bit-rate digital paths at or above the primary rate Deleted on 13/04/2004 after the incorporation of its content in G.827 (09/2003)
G.827	09-2003	Availability performance parameters and objectives for end-to-end international constant bit-rate digital paths
G.828	03-2000	Error performance parameters and objectives for international, constant bit-rate synchronous digital paths
G.828 (2000) Corrigendum 1	07-2001
G.829	12-2002	Error performance events for SDH multiplex and regenerator sections

G.830-G.839: Network capabilities and functions
G.831	03-2000	Management capabilities of transport networks based on the synchronous digital hierarchy (SDH)
G.832	10-1998	Transport of SDH elements on PDH networks – Frame and multiplexing structures
G.832 (1998) Amendment 1	06-2004	Payload type code for virtual concatenation of 34368 kbit/s signals

G.840-G.849: SDH network characteristics
G.841	10-1998	Types and characteristics of SDH network protection architectures
G.841 (1998) Corrigendum 1	08-2002
G.842	04-1997	Interworking of SDH network protection architectures

G.850-G.859: Management of transport network
G.851.1	11-1996	Management of the transport network – Application of the RM-ODP framework
G.852.1	11-1996	Enterprise viewpoint for simple subnetwork connection management
G.852.2	03-1999	Enterprise viewpoint description of transport network resource model
G.852.3	03-1999	Enterprise viewpoint for topology management
G.852.6	03-1999	Enterprise viewpoint for trail management
G.852.8	03-1999	Enterprise viewpoint for pre-provisioned adaptation management
G.852.10	03-1999	Enterprise viewpoint for pre-provisioned link connection management
G.852.12	03-1999	Enterprise viewpoint for pre-provisioned link management
G.852.16	01-2001	Enterprise viewpoint for pre-provisioned route discovery
G.853.1	03-1999	Common elements of the information viewpoint for the management of a transport network
G.853.2	11-1996	Subnetwork connection management information viewpoint
G.853.3	03-1999	Information viewpoint for topology management
G.853.6	03-1999	Information viewpoint for trail management
G.853.8	03-1999	Information viewpoint for pre-provisioned adaptation management
G.853.10	03-1999	Information viewpoint for pre-provisioned link connection management
G.853.12	03-1999	Information viewpoint for pre-provisioned link management
G.853.16	01-2001	Information viewpoint for pre-provisioned route discovery
G.854.1	11-1996	Computational interfaces for basic transport network model
G.854.3	03-1999	Computational viewpoint for topology management
G.854.6	03-1999	Computational viewpoint for trail management
G.854.8	03-1999	Computational viewpoint for pre-provisioned adaptation management
G.854.10	03-1999	Computational viewpoint for pre-provisioned link connection management
G.854.12	03-1999	Computational viewpoint for pre-provisioned link management
G.854.16	01-2001	Computational viewpoint for pre-provisioned route discovery
G.855.1	03-1999	GDMO engineering viewpoint for the generic network level model

G.860-G.869: SDH radio and satellite systems integration
G.861	08-1996	Principles and guidelines for the integration of satellite and radio systems in SDH transport networks

G.870-G.879: Optical transport networks
G.870/Y.1352	06-2004	Terms and definitions for optical transport networks (OTN)
G.871/Y.1301	10-2000	Framework of Optical Transport Network Recommendations
G.872	11-2001	Architecture of optical transport networks
G.872 (2001) Amendment 1	12-2003
G.872 (2001) Corrigendum 1	01-2005		Pre-published.
G.873.1	03-2003	Optical Transport Network (OTN): Linear protection
G.873.1 Erratum 1	10-2003
G.874	11-2001	Management aspects of the optical transport network element
G.874.1	01-2002	Optical transport network (OTN): Protocol-neutral management information model for the network element view

G.900-G.999: Digital sections and digital line system

G.900-G.909: General
G.901	11-1988	General considerations on digital sections and digital line systems
G.902	11-1995	Framework Recommendation on functional access networks (AN) – Architecture and functions, access types, management and service node aspects

G.910-G.919: Parameters for optical fibre cable systems
G.911	04-1997	Parameters and calculation methodologies for reliability and availability of fibre optic systems

G.920-G.929: Digital sections at hierarchical bit rates based on a bit rate of 2048 kbit/s
G.921	11-1988	Digital sections based on the 2048 kbit/s hierarchy

G.930-G.939: Digital line transmission systems on cable at non-hierarchical bit rates
G.931	11-1988	Digital line sections at 3152 kbit/s This Recommenation was deleted since no more significant content remained after the removal of the material in its Annex A to new Appendix III/G.703 "3152 kbit/s interface specification for use in North America".

G.940-G.949: Digital line systems provided by FDM transmission bearers
G.941	11-1988	Digital line systems provided by FDM transmission bearers

G.950-G.959: Digital line systems
G.950	11-1988	General considerations on digital line systems
G.951	11-1988	Digital line systems based on the 1544 kbit/s hierarchy on symmetric pair cables
G.952	11-1988	Digital line systems based on the 2048 kbit/s hierarchy on symmetric pair cables
G.953	11-1988	Digital line systems based on the 1544 kbit/s hierarchy on coaxial pair cables
G.954	11-1988	Digital line systems based on the 2048 kbit/s hierarchy on coaxial pair cables
G.955	11-1996	Digital line systems based on the 1544 kbit/s and the 2048 kbit/s hierarchy on optical fibre cables
G.956	11-1988	Digital line systems based on the 2048 kbit/s hierarchy on optical fibre cables The content of this Recommendation is now covered by ITU-T G.955
G.957	07-1999	Optical interfaces for equipments and systems relating to the synchronous digital hierarchy
G.957 (1999) Amendment 1	12-2003
G.957 (1999) Amendment 2	01-2005		Pre-published.
G.958	11-1994	Digital line systems based on the synchronous digital hierarchy for use on optical fibre cables Deleted since its content is covered by Recommendations G.783 and G.798
G.959.1	12-2003	Optical transport network physical layer interfaces
G.959.1 Erratum 1	04-2004

G.960-G.969: Digital section and digital transmission systems for customer access to ISDN
G.960	03-1993	Access digital section for ISDN basic rate access
G.961	03-1993	Digital transmission system on metallic local lines for ISDN basic rate access Covering note, 1st August 2000: Corrigendum 1
G.961 erratum	08-2000
G.962	03-1993	Access digital section for ISDN primary rate at 2048 kbit/s
G.962 (1993) Amendment 1	06-1997	Maintenance channel
G.963	03-1993	Access digital section for ISDN primary rate at 1544 kbit/s
G.964	03-2001	V-Interfaces at the digital local exchange (LE) – V5.1 interface (based on 2048 kbit/s) for the support of access network (AN)
G.965	03-2001	V-interfaces at the digital local exchange (LE) – V5.2 interface (based on 2048 kbit/s) for the support of access network (AN)
G.966	02-1999	Access digital section for B-ISDN

*G.967 V-interfaces at the service node (SN)*
G.967.1	06-1998	VB5.1 reference point specification This Recommendation includes one diskette containing the SDL process diagrams corresponding to the VB5.1 reference point.
G.967.2	02-1999	VB5.2 reference point specification This Recommendation includes one diskette containing the SDL process diagrams corresponding to the VB5.2 reference point.	Available only in MS Word.
G.967.3	03-2000	Protocol implementation conformance statements for interfaces at VB5 reference points

G.970-G.979: Optical fibre submarine cable systems
G.971	06-2004	General features of optical fibre submarine cable systems	Pre-published.
G.972	06-2004	Definition of terms relevant to optical fibre submarine cable systems
G.973	12-2003	Characteristics of repeaterless optical fibre submarine cable systems
G.974	06-2004	Characteristics of regenerative optical fibre submarine cable systems
G.975	10-2000	Forward error correction for submarine systems
G.975.1	02-2004	Forward error correction for high bit-rate DWDM submarine systems	Pre-published.
G.976	06-2004	Test methods applicable to optical fibre submarine cable systems
G.977	03-2004	Characteristics of optically amplified optical fibre submarine cable systems

G.980-G.989: Optical line systems for local and access networks
G.981	01-1994	PDH optical line systems for the local network
G.982	11-1996	Optical access networks to support services up to the ISDN primary rate or equivalent bit rates
G.983.1	01-2005	Broadband optical access systems based on Passive Optical Networks (PON)	Pre-published.
G.983.2	06-2002	ONT management and control interface specification for B-PON
G.983.2 (2002) Amendment 1	03-2003
G.983.2 (2002) Amendment 2	01-2005		Pre-published.
G.983.3	03-2001	A broadband optical access system with increased service capability by wavelength allocation
G.983.3 (2001) Amendment 1	06-2002
G.983.4	11-2001	A broadband optical access system with increased service capability using dynamic bandwidth assignment
G.983.4 (2001) Amendment 1	12-2003	New Annex A – Performance monitoring parameters
G.983.4 (2001) Corrigendum 1	01-2005		Pre-published.
G.983.5	01-2002	A broadband optical access system with enhanced survivability
G.983.6	06-2002	ONT management and control interface specifications for B-PON system with protection features
G.983.7	11-2001	ONT Management and Control Interface specification for Dynamic Bandwidth Assignment (DBA) B-PON system
G.983.8	03-2003	B-PON OMCI support for IP, ISDN, video, VLAN tagging, VC cross-connections and other select functions
G.983.9	06-2004	B-PON ONT management and control interface (OMCI) support for wireless Local Area Network interfaces
G.983.10	06-2004	B-PON ONT management and control interface (OMCI) support for Digital Subscriber Line interfaces
G.984.1	03-2003	Gigabit-capable Passive Optical Networks (G-PON): General characteristics
G.984.2	03-2003	Gigabit-capable Passive Optical Networks (G-PON): Physical Media Dependent (PMD) layer specification
G.984.3	02-2004	Gigabit-capable Passive Optical Networks (G-PON): Transmission convergence layer specification
G.984.4	06-2004	Gigabit-capable Passive Optical Networks (G-PON): ONT management and control interface specification
G.985	03-2003	100 Mbit/s point-to-point Ethernet based optical access system
G.985 (2003) Corrigendum 1	01-2005		Pre-published.
G.989.1	02-2001	Phoneline networking transceivers – Foundation
G.989.2	11-2001	Phoneline networking transceivers – Payload format and link layer requirements
G.989.3	03-2003	Phoneline networking transceivers – Isolation function

G.990-G.999: Access networks
G.991.1	10-1998	High bit rate digital subscriber line (HDSL) transceivers
G.991.2	12-2003	Single-pair high-speed digital subscriber line (SHDSL) transceivers
G.991.2 Amendment 1	07-2004	Not available for technical reasons	Pre-published.
G.992.1	07-1999	Asymmetric digital subscriber line (ADSL) transceivers
G.992.1 (1999) Corrigendum 1	11-2001
G.992.1 (1999) Corrigendum 2	07-2002	The changes introduced by this corrigendum are included in G.992.1 (1999) Amendment 1
G.992.1 (1999) Amendment 1	03-2003	Revised Annex C, new Annex I and new Appendix V This amendment includes the changes introduced by G.992.1 (1999) Corrigendum 2
G.992.1 (1999) Amendment 1 Corrigendum 1	12-2003		Pre-published.
G.992.1 Annex H	10-2000	Specific requirements for a synchronized symmetrical DSL (SSDSL) system operating in the same cable binder as ISDN as defined in ITU-T G.961 Appendix III
G.992.2	07-1999	Splitterless asymmetric digital subscriber line (ADSL) transceivers
G.992.2 (1999) Corrigendum 1	07-2002	The content of this corrigendum has been incorporated in Amendement 1 (2003)
G.992.2 (1999) Amendment 1	03-2003	Revised Annex C This Amendement includes the modifications of Corrigendum 1 (2002)
G.992.2 (1999) Amendment 2	10-2003	New Appendix IV: Example overlapped PSD masks for use in a TCM-ISDN crosstalk environment
G.992.3	01-2005	Asymmetric digital subscriber line transceivers 2 (ADSL2)	Pre-published.
G.992.4	07-2002	Splitterless asymmetric digital subscriber line transceivers 2 (splitterless ADSL2)
G.992.5	01-2005	Asymmetric Digital Subscriber Line (ADSL) transceivers – Extended bandwidth ADSL2 (ADSL2+)	Pre-published.
G.993.1	06-2004	Very high speed digital subscriber line transceivers	Pre-published.
G.994.1	05-2003	Handshake procedures for digital subscriber line (DSL) transceivers
G.994.1 (2003) Amendment 1	02-2004
G.994.1 (2003) Amendment 2	06-2004
G.994.1 (2003) Amendment 3	01-2005	New codepoints	Pre-published.
G.995.1	02-2001	Overview of digital subscriber line (DSL) Recommendations
G.995.1 (2001) Amendment 1	11-2001
G.996.1	02-2001	Test procedures for digital subscriber line (DSL) transceivers
G.996.1 Erratum 1	01-2003
G.996.1 (2001) Amendment 1	03-2003	New Annex B
G.997.1	05-2003	Physical layer management for digital subscriber line (DSL) transceivers
G.997.1 (2003) Amendment 1	12-2003
G.997.1 (2003) Amendment 2	01-2005		Pre-published.
G.998.1	01-2005	ATM-based multi-pair bonding	Not available, contact sales@itu.int.
G.998.2	01-2005	Ethernet-based multi-pair bonding	Pre-published.
G.998.3	01-2005	Multi-pair bonding using time-division inverse multiplexing	Pre-published.

G.1000-G.1999: Quality of service and performance – Generic and user-related aspects
G.1000	11-2001	Communications Quality of Service: A framework and definitions
G.1010	11-2001	End-user multimedia QoS categories
G.1020	11-2003	Performance parameter definitions for quality of speech and other voiceband applications utilizing IP networks
G.1020 (2003) Amendement 1	05-2004	New Annex A – VoIP gateway-specific reference points and performance parameters

G.6000-G.6999: Transmission media characteristics

G.7000-G.7999: Digital terminal equipments

G.7000-G.7099: General
G.7041/Y.1303	12-2003	Generic framing procedure (GFP)
G.7041/Y.1303 Amendment 2	06-2004
G.7041/Y.1303 Amendment 1	10-2004		Pre-published.
G.7041/Y.1303 (2003) Cor.1	01-2005		Not available, contact sales@itu.int.
G.7041/Y.1303 (2003) Amendment 3	01-2005		Pre-published.
G.7042/Y.1305	02-2004	Link capacity adjustment scheme (LCAS) for virtual concatenated signals
G.7042/Y.1305 Corrigendum 1	08-2004		Pre-published.
G.7043/Y.1343	07-2004	Virtual concatenation of plesiochronous digital hierarchy (PDH) signals
G.7043/Y.1343 (2004) Amendment 1	01-2005		Pre-published.

G.7700-G.7799: Operations, administration and maintenance features of transmission equipment
G.7710/Y.1701	11-2001	Common equipment management function requirements
G.7712/Y.1703	03-2003	Architecture and specification of data communication network
G.7713/Y.1704	12-2001	Distributed Call and Connection Management (DCM)
G.7713/Y.1704 (2001) Amendment 1	06-2004
G.7713.1/Y.1704.1	03-2003	Distributed Call and Connection Management (DCM) based on PNNI
G.7713.2/Y.1704.2	03-2003	Distributed Call and Connection Management: Signalling mechanism using GMPLS RSVP-TE
G.7713.3/Y.1704.3	03-2003	Distributed Call and Connection Management: Signalling mechanism using GMPLS CR-LDP
G.7714/Y.1705	11-2001	Generalized automatic discovery techniques
G.7714.1/Y.1705.1	04-2003	Protocol for automatic discovery in SDH and OTN networks
G.7715/Y.1706	06-2002	Architecture and requirements for routing in the automatically switched optical networks
G.7715.1/Y.1706.1	02-2004	ASON routing architecture and requirements for link state protocols
G.7718/Y.1709	02-2005	Framework for ASON management	Not available, contact sales@itu.int.

G.8000-G.8999: Digital networks

G.8000-G.8099: General aspects
G.8010/Y.1306	02-2004	Architecture of Ethernet layer networks
G.8011/Y.1307	08-2004	Ethernet over Transport – Ethernet services framework	Pre-published.
G.8011.1/Y.1307.1	08-2004	Ethernet private line service	Pre-published.
G.8012/Y.1308	08-2004	Ethernet UNI and Ethernet NNI
G.8021/Y.1341	08-2004	Characteristics of Ethernet transport network equipment functional blocks	Pre-published.
G.8040/Y.1340	06-2004	GFP frame mapping into plesiochronous digital hierarchy (PDH)
G.8040/Y.1340 Corrigendum 1	01-2005		Pre-published.
G.8040/Y.1340 (2004) Amendment 1	01-2005		Pre-published.
G.8080/Y.1304	11-2001	Architecture for the automatically switched optical network (ASON)
G.8080/Y.1304 (2001) Amendment 1	03-2003
G.8081/Y.1353	06-2004	Terms and definitions for Automatically Switched Optical Networks (ASON)

G.8100-G.8199: Design objectives for digital networks
G.8110/Y.1370	01-2005	MPLS layer network architecture	Pre-published.

G.8200-G.8299: Quality and availability targets
G.8201	09-2003	Error performance parameters and objectives for multi-operator international paths within the Optical Transport Network (OTN)
G.8251	11-2001	The control of jitter and wander within the optical transport network (OTN)
G.8251 (2001) Corrigendum 1	06-2002
G.8251 (2001) Amendment 1	06-2002

G.8700-G.8799: Optical transport networks
G.9954	02-2005	Phoneline networking transceivers – Enhanced physical, media access, and link layer specifications	Not available, contact sales@itu.int.

G-Series: Supplements to the Series G Recommendations
G.100 Series Supplement 29	03-1993	Planning of mixed analogue-digital circuits (chains, connections)
G.100 Series Supplement 31	03-1993	Principles of determining an impedance strategy for the local network
G.100 Series Supplement 32	03-1993	Transmission aspects of digital mobile radio systems
G Suppl. 4	12-1972	Certain methods of avoiding the transmission of excessive noise between interconnected systems	Not available, contact sales@itu.int.
G Suppl. 5	10-1984	Measurement of the load of telephone circuits under field conditions	Available only in PDF.
G Suppl. 7	12-1972	Loss-frequency response of channel-translating equipment used in some countries for international circuits	Not available, contact sales@itu.int.
G Suppl. 8	12-1972	Method proposed by the Belgian telephone administration for interconnection between coaxial and symmetric pair systems	Not available, contact sales@itu.int.
G Suppl.17	10-1984	Group-delay distortion performance of terminal equipment	Available only in PDF.
G Suppl.19	10-1984	Digital crosstalk measurement (method used by the Administrations of France, the Netherlands and Spain)	Available only in PDF.
G Suppl.22	10-1984	Mathematical models of multiplex signals	Available only in PDF.
G Suppl. 26	10-1984	Estimating the signal load margin of FDM wideband amplifier equipment and transmission systems	Available only in PDF.
G Suppl. 27	10-1984	Interference from external sources This Supplement is published as G.500 series supplement in Red Book fascicle III.2 and as G.900 series supplement in Red Book fascicle III.3	Available only in PDF.
G Suppl. 28	10-1984	Application of transmultiplexers, FDM codecs, data-in-voice (DIV) systems and data-over-voice (DOV) systems during the transition from an analogue to a digital network	Available only in PDF.
G Suppl. 32	11-1988	Transfer of alarm information on 60-channel transmultiplexing equipment	Not available, contact sales@itu.int.
G Suppl. 34	11-1988	Temperature in underground containers for the installation of repeaters	Available only in PDF.
G Suppl. 35	11-1988	Guidelines concerning the measurement of wander	Available only in PDF.
G Suppl. 36	11-1988	Jitter and wander accumulation in digital networks	Available only in PDF.
G.Sup37	10-1998	ITU-T Recommendation G.763 digital circuit multiplication equipment (DCME) tutorial and dimensioning
G.Sup38	10-1998	Variable bit rate calculations for the ITU-T Recommendation G.767 Digital Circuit Multiplication Equipment (DCME)
G.Sup39	10-2003	Optical system design and engineering considerations