ITU-T G-Series Recommendations

G Series:Transmission Systems and Media, Digital Systems and Networks

International Telephone Connections and International Telephone Circuits -

1. G.100 (03/93)
   Definitions used in Recommendations on general characteristics of international telephone connections and circuits.
    
2. G.101 (08/96)
   The transmission plan.
    
3. G.102 (11/88)
   Transmission performance objectives and Recommendations.
    
4. G.103 (12/98)
   Hypothetical reference connections.
    
5. G.105 (11/88)
   Hypothetical reference connection for crosstalk studies.
    
6. G.107 (05/00)
   The E-Model, a Computational Model for Use in Transmission Planning.
    
7. G.108 (09/99)
   Application of the E-Model: A Planning Guide.
    
8. G.108.1 (05/00)
   Conversational Impacts on End-to-End Speech Transmission Quality - Evaluation of Effects Not Covered by the E-Model.
    
9. G.109 (09/99)
   Definition of Catefories of Speech Transmission Quality.

Transmission Quality for an Entire International Telephone Connection

1. G.111 (03/93)
   Loudness ratings (LRs) in an international connection.
    
2. G.113 (02/96)
   Transmission impairments.
    
3. G.114 (05/00)
   One-way transmission time.
    
4. G.115 (02/96)
   Mean active speech level for anouncements and speech synthesis systems.
    
5. G.116 (09/99)
   Transmission Performance Objectives Applicable to End-to-End International Connections.
    
6. G.117 (02/96)
   Transmission aspects of unbalance about earth.

National Systems Forming Part of International Connections

1. G.120 (12/98)
   Transmission characteristics of national networks.
    
2. G.121 (03/93)
   Loudness ratings (LRs) of national systems.
    
3. G.122 (03/93)
   Influence of national systems on stability talker echo in international connections.
    
4. G.123 (11/88)
   Circuit noise in national networks.
    
5. G.125 (11/88)
   Characteristics of national circuits on carrier systems.
    
6. G.126 (03/93)
   Listener echo in telephone networks.

4-Wire Chain Formed by the International Circuits and National Extension

1. G.131 (08/96)
   Control of talker echo.
    
2. G.131 Appendix II (09/99)
   Relation Between Echo Disturbances Under Single Talk and Double Talk Conditions (Evaluated for One-Way Transmission Time of 100 ms).
    
3. G.132 (11/88)
   Attenuation distortion.
    
4. G.133 (11/88)
   Group-delay distortion.
    
5. G.134 (11/88)
   Linear crosstalk.
    
6. G.135 (11/88)
   Error on the reconstituted frequency.
    
7. G.136 (09/99)
   Application Rules for Automatic Level Control Devices.

4-Wire Chain of International Circuits; International Transit

1. G.141 (11/88)
   Attenuation distortion.
    
2. G.142 (12/98)
   Transmission characteristics of exchanges.
    
3. G.143 (11/88)
   Circuit noise and the use of compandors.

International Telephone Circuits and National Extension Circuits

1. G.151 (11/80)
   General performance objectives applicable to all modern international circuits and national extension circuits.
    
2. G.152 (11/80)
   Characteristics appropriate to long-distance circuits of a length not exceeding 2500 km.
    
3. G.153 (11/80)
   Characteristics appropriate to international circuits more than 2500 km in length.

Apparatus Associated with Long-Distance Telephone Circuits

1. G.162 (10/68)
   Characteristics of compandors for telephony.
    
2. G.164 (11/88)
   Echo suppressors.
    
3. G.165 (03/93)
   Echo cancellers.
    
4. G.166 (11/88)
   Characteristics of syllabic compandors for telephony on high capacity long distance systems.
    
5. G.167 (03/93)
   Acoustic echo controllers.
    
6. G.168 (04/00)
   Digital Network Echo Cancellers.
    
7. G.169 (06/99)
   Automatic Level Control Devices.

Transmission Plan Aspects of Special Circuits and Connections Using The

1. G.171 (11/88)
   Transmission plan aspects of privately operated networks.
    
2. G.172 (11/88)
   Transmission plan aspects of international conference calls.
    
3. G.173 (03/93)
   Transmission planning aspects of the speech service in digital public land mobile networks.
    
4. G.174 (06/94)
   Transmission performance objectives for terrestrial digital wireless systems using portable terminals to access the PSTN.
    
5. G.175 (05/00)
   Transmission Planning for Private/Public Network Interconnection of Voice Traffic.
    
6. G.176 (04/97)
   Planning Guidelines for the Integration of ATM Technology into Networks Supporting Voiceband Services.
    
7. G.177 (09/99)
   Transmission Planning for Voiceband Services over Hybrid Internet/PSTN Connections.

Protection and Restoration of Transmission Systems

1. G.180 (03/93)
   Characteristics of N + M type direct transmission restoration systems for use on digital and analogue sections, links or equipment.
    
2. G.181 (03/93)
   Characteristics of 1 + 1 type restoration systems for use on digital transmission links.

Software Tools for Transmission Systems

1. G.191 (11/96)
   Software tools for speech and audio coding standardization.
    
2. G.192 (03/96)
   A common digital parallel interface for speech standardization activities.

Definitions and General Considerations

1. G.211 (11/88)
   Make-up of a carrier link.
    
2. G.212 (11/88)
   Hypothetical reference circuits for analogue systems.
    
3. G.213 (11/88)
   Interconnection of systems in a main repeater station.
    
4. G.214 (11/88)
   Line stability of cable systems.
    
5. G.215 (11/88)
   Hypothetical reference circuit of 5000 km for analogue systems.

General Recommendations

1. G.221 (11/88)
   Overall recommendations relating to carrier-transmission systems.
    
2. G.222 (11/88)
   Noise objectives for design of carrier-transmission systems of 2500 km.
    
3. G.223 (11/88)
   Assumptions for the calculation of noise on hypothetical reference circuits for telephony.
    
4. G.224 (11/88) (same as former Q.16)
   Maximum permissible value for the absolute power level (power referred to one milliwatt) of a signalling pulse.
    
5. G.225 (11/88)
   Recommendations relating to the accuracy of carrier frequencies.
    
6. G.226 (11/88)
   Noise on a real link.
    
7. G.227 (11/88)
   Conventional telephone signal.
    
8. G.228 (11/88)
   Measurement of circuit noise in cable systems using a uniform-spectrum random noise loading.
    
9. G.229 (11/88)
   Unwanted modulation and phase jitter.

Translating Equipment Used on Various Carrier-Transmission Systems

1. G.230 (11/88)
   Measuring methods for noise produced by modulating equipment and through-connection filters.
    
2. G.231 (11/88)
   Arrangement of carrier equipment.
    
3. G.232 (11/88)
   12-channel terminal equipments.
    
4. G.233 (11/88)
   Recommendations concerning translating equipments.

Utilization of Groups, Supergroups, Etc.

1. G.241 (11/88)
   Pilots on groups, supergroups, etc.
    
2. G.242 (11/88)
   Through-connection of groups, supergroups, etc.
    
3. G.243 (11/88)
   Protection of pilots and additional measuring frequencies at points where there is a through-connection.

Carrier Telephone Systems on Unloaded Symmetric Cable Pairs, Providing

1. G.322 (11/88)
   General characteristics recommended for systems on symmetric pair cables.
    
2. G.325 (11/88)
   General characteristics recommended for systems providing 12 telephone carrier circuits on a symmetric cable pair [(12 + 12) systems].

Carrier Systems on 2.6/9.5 mm Coaxial Cable Pairs

1. G.332 (11/88)
   12 MHz systems on standardized 2.6/9.5 mm coaxial cable pairs.
    
2. G.333 (11/88)
   60 MHz systems on standardized 2.6/9.5 mm coaxial cable pairs.
    
3. G.334 (11/88)
   18 MHz systems on standardized 2.6/9.5 mm coaxial cable pairs.

Carrier Systems on 1.2/4.4 mm Coaxial Cable Pairs

1. G.341 (11/88)
   1.3 MHz systems on standardized 1.2/4.4 mm coaxial cable pairs.
    
2. G.343 (11/88)
   4 MHz systems on standardized 1.2/4.4 mm coaxial cable pairs.
    
3. G.344 (11/88)
   6 MHz systems on standardized 1.2/4.4 mm coaxial cable pairs.
    
4. G.345 (11/88)
   12 MHz systems on standardized 1.2/4.4 mm coaxial cable pairs.
    
5. G.346 (11/88)
   18 MHz systems on standardized 1.2/4.4 mm coaxial cable pairs.

Additional Recommendations on Cable Systems

1. G.352 (11/88)
   Interconnection of coaxial carrier systems of different designs.

General Recommendations

1. G.411 (11/88)
   Use of radio-relay systems for international telephone circuits.

Interconnection of Radio-Relay Links with Carrier Systems On Metallic Lines

1. G.421 (11/88)
   Methods of interconnection.
    
2. G.422 (11/88)
   Interconnection at audio-frequencies.
    
3. G.423 (11/88)
   Interconnection at the baseband frequencies of frequency-division multiplex radio-relay systems.

Hypothetical Reference Circuits

1. G.431 (11/88)
   Hypothetical reference circuits for frequency-division multiplex radio-relay systems.

Circuit Noise

1. G.441 (11/88)
   Permissible circuit noise on frequency-division multiplex radio-relay systems.
    
2. G.442 (11/88)
   Radio-relay system design objectives for noise at the far end of a hypothetical reference circuit with reference to telegraphy transmission.

Radiotelephone Circuits

1. G.451 (11/88)
   Use of radio links in international telephone circuits.

Links with Mobile Stations

1. G.473 (11/80)
   Interconnection of a maritime mobile satellite system with the international automatic switched telephone service, transmission aspects.
    
2. G.511 (02/98)
   Test Methodology for Group 3 Facsimile Processing Equipment in the Public Switched Telephone Network.

Transmission Media Characteristics - General

1. G.601 (11/88)
   Terminology for cables.
    
2. G.602 (11/88)
   Reliability and availability of analogue cable transmission systems and associated equipments.

Symmetric Cable Pairs

1. G.611 (11/88)
   Characteristics of symmetric cable pairs for analogue transmission.
    
2. G.612 (11/88)
   Characteristics of symmetric cable pairs designed for the transmission of systems with bit rates of the order of 6 to 34 Mbit/s.
    
3. G.613 (11/88)
   Characteristics of symmetric cable pairs usable wholly for the transmission of digital systems with a bit rate of up to 2 Mbits.
    
4. G.614 (11/88)
   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.

Land Coaxial Cable Pairs

1. G.621 (11/88)
   Characteristics of 0.7/2.9 mm coaxial cable pairs.
    
2. G.622 (11/88)
   Characteristics of 1.2/4.4 mm coaxial cable pairs.
    
3. G.623 (11/88)
   Characteristics of 2.6/9.5 mm coaxial cable pairs.

Submarine Cables

1. G.631 (11/88)
   Types of submarine cable to be used for systems with line frequencies of less than about 45 MHz.

Optical Fibre Cables

1. G.650 (04/97)
   Definition and test methods for the relevant parameters of single-mode fibres.
    
2. G.651 (02/98)
   aracteristics of a 50/125 um multimode graded index optical fibre cable.
    
3. G.652 (04/97)
   Characteristics of a single-mode optical fibre cable.
    
4. G.653 (04/97)
   Characteristics of a dispersion-shifted single-mode optical fibre cable.
    
5. G.654 (04/97)
   Characteristics of a cut-off shifted single-mode optical fibre cable.
    
6. G.655 (10/96)
   Characteristics of a non-zero dispersion shifted single-mode optical fibre cable.

Characteristics of Optical Components and Sub-Systems

1. G.661 (10/98)
   Definition and test methods for the relevant generic parameters of optical fibre amplifiers.
    
2. G.662 (10/98)
   Geneeric characteristics of optical fibre amplifier devices and sub-systems.
    
3. G.663 (04/00)
   Application related aspects of optical fibre amplifier devices and sub-systems.
    
4. G.664 (06/99)
   Optical Safety Procedures and Requirements for Optical Transport Systems.
    
5. G.671 (11/96)
   Transmission characteristics of passive optical components.
    
6. G.681 (10/96)
   Functional characteristics of interoffice and long-haul line systems using optical amplifiers, including optical multiplexing.
    
7. G.692 (10/98)
   Optical Interfaces for Multichannel Systems with Optical Amplifiers.

Digital Transmission Systems - Terminal Equipments - General

1. G.701 (03/93)
   Vocabulary of digital transmission and multiplexing, and pulse code modulation (PCM) terms.
    
2. G.702 (11/88)
   Digital hierarchy bit rates.
    
3. G.703 (10/98)
   Physical/electrical characteristics of hierarchical digital interfaces.
    
4. G.704 (10/98)
   Synchronous frame structures used at 1544, 6312, 2048, 8488 and 44 736 kbit/s hierarchical levels.
    
5. G.705 (1988)
   Characteristics required to terminate digital links on a digital exchange.
    
6. G.706 (04/91)
   Frame alignment and cyclic redundancy check (CRC) procedures relating to basic frame structures defined in Recommendation G.704.
    
7. G.707 (03/96)
   Network node interface for the synchronous digital hierarchy (SDH).
    
8. G.708 (06/99)
   Sub STM-0 Network Node Interface for the Synchronous Digital Hierarchy (SDH).

Coding of Analogue Signals by Pulse Code Modulation

1. G.711 (11/88)
   Pulse code modulation (PCM) of voice frequencies.
    
2. G.711 Appendix I (09/99)
   A High Quality Low-Complexity Algorithm for Packet Loss Concealment with G.711.
    
3. G.711 Appendix II (02/00)
   A Comfort Noise Payload Definition for ITU-T G.711 Use in Packet-Based Multimedia Communication Systems.
    
4. G.712 (11/96)
   Transmission performance characteristics of pulse code modulation.

Coding of Analogue Signals by Methods Other Than PCM

1. G.720 (07/95)
   Characterization of low-rate digital voice coder performance with non-voice signals.
    
2. G.722 (11/88)
   7 kHz audio-coding within 64 kbit/s.
    
3. G.722 Annex A (03/93)
   Testing signal-to-total distortion ratio for 7 kHz audio-codecs at 64 kbit/s Recommendation G.722 connected back-to-back.
    
4. G.722 Appendix II (03/87)
   Description of the Digital Test Sequences for the Verification of the G.722 64 kbit/s SB-ADPCM 7 kHz Coded.
    
5. G.722.1 (09/99)
   Coding at 24 and 32 kbit/s for Hands-Free Operation in Systems with Low Frame Loss.
    
6. G.722.1 Annex A (02/00)
   Packet Format, Capability Identifiers and Capability Parameters.
    
7. G.723
   Speech coders.
    
8. G.723.1 (03/96) + Annex A (11/96) + Annex B (11/96) + Annex C (11/96)
   Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.1 kbit/s.
    
9. G.724 (11/88)
   Characteristics of a 48-channel low bit rate encoding primary multiplex operating at 1544 kbit/s.
    
10. G.725 (11/88)
    System aspects for the use of the 7 kHz audio codec within 64 kbit/s.
     
11. G.726 (12/90) + Annex A (11/94)
    40, 32, 24, 16 kbit/s adaptive differential pulse code modulation (ADPCM).
     
12. G.726 Appendix II (03/91)
    Description of the Digital Test Sequences for the Verification of the G.726 40, 32, 24, and 16 kbit/s ADPCM Algorithm.
     
13. G.726 Appendix III (05/94)
    Comparison of ADPCM algorithms.
     
14. G.727 (12/90) + Annex A (11/94) + Appendix I (03/91)
    5-, 4-, 3- and 2-bits/sample embedded adaptive differential pulse code modulation (ADPCM).
     
15. G.727 Appendix II (05/94)
    Comparison of ADPCM algorithms.
     
16. G.728 (09/92) + Annex G (11/94) + Annex H (05/99) + Annex I (05/99) + Annex J (09/99) + Appendix I (07/95) + Appendix II (11/95)
    Coding of speech at 16 kbit/s using low-delay code excited linear prediction.
     
17. G.729 (03/96) + Annex A (11/96) + Annex B (10/96) + Annex C (09/98) + Annex C+ (02/00) + Annex D (09/98) + Annex E (09/98) + Annex F (02/00) + Annex G (02/00) + Annex H (02/00) + Annex I (02/00)
    Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear-prediction.

Principal Characteristics of Primary Multiplex Equipment

1. G.731 (11/88)
   Primary PCM multiplex equipment for voice frequencies.
    
2. G.732 (11/88)
   Characteristics of primary PCM multiplex equipment operating at 2048 kbit/s.
    
3. G.733 (11/88)
   Characteristics of primary PCM multiplex equipment operating at 1544 kbit/s.
    
4. G.734 (11/88)
   Characteristics of synchronous digital multiplex equipment operating at 1544 kbit/s.
    
5. G.735 (11/88)
   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.
    
6. G.736 (03/93)
   Characteristics of a synchronous digital multiplex equipment operating at 2048 kbit/s.
    
7. G.737 (11/88)
   Characteristics of an external access equipment operating at 2048 kbit/s offering synchronous digital access at 384 kbit/s and/or 64 kbit/s.
    
8. G.738 (11/88)
   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.
    
9. G.739 (11/88)
   Characteristics of an external access equipment operating at 2048 kbit/s offering synchronous digital access at 320 kbit/s and/or 64 kbit/s.

Principal Characteristics of Second Order Multiplex Equipment

1. G.741 (11/88)
   General considerations on second order multiplex equipments.
    
2. G.742 (11/88)
   Second order digital multiplex equipment operating at 8448 kbit/s and using positive justification.
    
3. G.743 (11/88)
   Second order digital multiplex equipment operating at 6312 kbit/s and using positive justification.
    
4. G.744 (11/88)
   Second order PCM multiplex equipment operating at 8448 kbit/s.
    
5. G.745 (11/88)
   Second order digital multiplex equipment operating at 8448 kbit/s and using positive/zero/negative justification.
    
6. G.746 (11/88)
   Characteristics of second order PCM multiplex equipment operating at 6312 kbit/s.
    
7. G.747 (11/88)
   Second order digital multiplex equipment operating at 6312 kbit/s and multiplexing three tributaries at 2048 kbit/s.

Principal Characteristics of Higher Order Multiplex Equipment

1. G.751 (11/88)
   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.
    
2. G.752 (11/88)
   Characteristics of digital multiplex equipments based on a second order bit rate of 6312 kbit/s and using positive justification.
    
3. G.753 (11/88)
   Third order digital multiplex equipment operating at 34 368 kbit/s and using positive/zero/negative justification.
    
4. G.754 (11/88)
   Fourth order digital multiplex equipment operating at 139 264 kbit/s and using positive/zero/negative justification.
    
5. G.755 (11/88)
   Digital multiplex equipment operating at 139 264 kbit/s and multiplexing three tributaries at 44 736 kbit/s.

Principal Characteristics of Transcoder and Digital Multiplication Equipment

1. G.761 (11/88)
   General characteristics of a 60-channel transcoder equipment.
    
2. G.762 (11/88)
   General characteristics of a 48-channel transcoder equipment.
    
3. G.763 (10/98)
   Digital circuit multiplication equipment using ADPCM (Recommendation G.726) and digital speech interpolation.
    
4. G.764 (12/90) + Appendix I (11/95)
   Voice packetization - Packetized voice protocols.
    
5. G.765 (09/92) + Appendix I (11/95)
   Packet circuit multiplication equipment.
    
6. G.766 (11/96)
   Facsimile demodulation/remodulation for digital circuit multiplication equipment.
    
7. G.767 (10/98)
   Digital Circuit Multiplication Equipment Using 16 kbit/s LD-CELP, Digital Speech Interpolation and Facsimile Demodulation/Remodulation.

Operations, Administration and Maintenance Features of Transmission

1. G.772 (03/93)
   Protected monitoring points provided on digital transmission systems.
    
2. G.773 (03/93)
   Protocol suites for Q-interfaces for management of transmission systems.
    
3. G.774 (09/92) + Corr 1 (11/96)
   Synchronous digital hierarchy (SDH) management information model for the network element view.
    
4. G.774.01 (11/94) + Corr 1 (11/96)
   Synchronous digital hierarchy (SDH) performance monitoring for the network element view.
    
5. G.774.02 (11/94) + Corr 1 (11/96)
   Synchronous digital hierarchy (SDH) configuration of the payload structure for the network element view.
    
6. G.774.03 (11/94) + Corr 1 (11/96)
   Synchronous digital hierarchy (SDH) management of multiplex-section protection for the network element view.
    
7. G.774.04 (07/95) + Corr 1 (11/96)
   Synchronous digital hierarchy (SDH) management of the subnetwork connection protection for the network element view.
    
8. G.774.05 (07/95) + Corr 1 (11/96)
   Synchronous Digital Hierarchy (SDH) management of connection supervision functionality (HCS/LCS) for the network element view.
    
9. G.774.6 (04/97)
   Synchronous Digital Hierarchy (SDH) Unidirectional Performance Monitoring for the Network Element View.
    
10. G.774.7 (11/96)
    Synchronous Digital Hierarchy (SDH) Management of Lower Order Path Trace and Interface Labelling for the Network Element View.
     
11. G.774.8 (04/97)
    Synchronous Digital Hierarchy (SDH) Management of Radio-Relay Systems for the Network Element View.
     
12. G.774.9 (02/98)
    Synchronous Digital Hierarchy (SDH) Configuration of Linear Multiplex Section Protection for the Network Element View.
     
13. G.775 (10/98)
    Loss of signal (LOS) and alarm indication signal (AIS) defect detection and clearance criteria.
     
14. G.776.1 (10/98)
    Managed Objects for Signal Processing Network Elements.
     
15. G.776.3 (04/00)
    ADPCM DCME Configuration Map Report.

Principal Characteristics of Multiplexing Equipment for the Synchronous

1. G.780 (06/99)
   Vocabulary of terms for synchronous digital hierarchy (SDH) networks and equipment.
    
2. G.781 (06/99)
   Synchronization Layer Functions.
    
3. G.783 (04/97)
   Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks.
    
4. G.784 (06/99)
   Synchronous digital hierarchy (SDH) management.
    
5. G.785 (11/96)
   Characteristics of a flexible multiplexer in a synchronous digital environment.

Other Terminal Equipment

1. G.791 (11/88)
   General considerations on transmultiplexing equipments.
    
2. G.792 (11/88)
   Characteristics common to all transmultiplexing equipments.
    
3. G.793 (11/88)
   Characteristics of 60-channel transmultiplexing equipments.
    
4. G.794 (11/88)
   Characteristics of 24-channel transmultiplexing equipments.
    
5. G.795 (11/88)
   Characteristics of codecs for FDM assemblies.
    
6. G.796 (09/92) + Corr 1 (10/98)
   Characteristics of a 64 kbit/s cross-connect equipment with 2048 kbit/s access ports.
    
7. G.797 (03/96)
   Characteristics of a flexible multiplexer in a plesiochronous digital hierarchy environment.

Digital Networks - General Aspects

1. G.801 (11/88)
   Digital transmission models.
    
2. G.802 (11/88)
   Interworking between networks based on different digital hierarchies and speech encoding laws.
    
3. G.803 (03/00)
   Architectures of transport networks based on the synchronous digital hierarchy (SDH).
    
4. G.804 (02/98)
   ATM cell mapping into plesiochronous digital hierarchy (PDH).
    
5. G.805 (03/00)
   Generic functional architecture of transport networks.

Design Objectives for Digital Networks

1. G.810 (08/96)
   Definitions and terminology for synchronization networks.
    
2. G.811 (09/97)
   Timing requirements at the outputs of primary reference clocks suitable for plesichronous operation of international digital links.
    
3. G.812 (06/98)
   Timing requirements at the outputs of slave clocks suitable for plesiochronous operation of international digital links.
    
4. G.813 (08/96)
   Timing characteristics of SDH equipment slave clocks (SEC).

Quality and Availability Targets

1. G.821 (08/96)
   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.
    
2. G.822 (11/88)
   Controlled slip rate objectives on an international digital connection.
    
3. G.823 (03/00)
   The control of jitter and wander within digital networks which are based on the 2048 kbit/s hierarchy.
    
4. G.824 (03/00)
   The control of jitter and wander within digital networks which are based on the 1544 kbit/s hierarchy.
    
5. G.825 (03/00)
   The control of jitter and wander within digital networks which are based on the synchronous digital hierarchy (SDH).
    
6. G.826 (02/99)
   Error performance parameters and objectives for international, constant bit rate digital paths at or above the primary rate.
    
7. G.827 (03/00)
   Availability parameters and objectives for path elements of international constant bit-rate digital paths at or above the primary rate.
    
8. G.828 (03/00)
   Error Performance Parameters and Objectives for International, Constant Bit Rate Synchronous Digital Paths.
    
9. G.829 (03/00)
   Error Performance Events for SDH Multiplex and Regenerator Sections.

Network Capabilities and Functions

1. G.831 (03/00)
   Management capabilities of transport networks based on the Synchronous Digital Hierarchy (SDH).
    
2. G.832 (10/98)
   Transport of SDH elements on PDH networks: Frame and multiplexing structures.

SDH Network Characteristics

1. G.841 (10/98)
   Types and characteristics of SDH network protection architectures.
    
2. G.842 (04/97)
   Interworking of SDH Network Protection Architectures.
    
3. G.851.1 (11/96)
   Management of the transport network - Application of the RM-ODP framework.
    
4. G.852.1 (11/96)
   Management of the transport network - Enterprise viewpoint for simple subnetwork connection management.
    
5. G.852.2 (03/99)
   Enterprise Viewpoint Description of Transport Network Resource Model.
    
6. G.852.3 (03/99)
   Enterprise Viewpoint for Topology Management.
    
7. G.852.6 (03/99)
   Enterprise Viewpoint for Trail Management.
    
8. G.852.8 (03/99)
   Enterprise Viewpoint for Pre-Provisioned Adaptation Management.
    
9. G.852.10 (03/99)
   Enterprise Viewpoint for Pre-Provisioned Link Connection Management.
    
10. G.852.12 (03/99)
    Enterprise Viewpoint for Pre-Provisioned Link Management.
     
11. G.853.1 (03/99)
    Common elements of the information viewpoint for the management of a transport network.
     
12. G.853.2 (11/96)
    Subnetwork connection management information viewpoint.
     
13. G.853.3 (03/99)
    Information Viewpoint for Topology Management.
     
14. G.853.6 (03/99)
    Information Viewpoint for Trail Management.
     
15. G.853.8 (03/99)
    Information Viewpoint for Pre-Provisioned Adaptation Management.
     
16. G.853.10 (03/99)
    Information Viewpoint for Pre-Provisioned Link Connection Management.
     
17. G.853.12 (03/99)
    Information Viewpoint for Pre-Provisioned Link Management.
     
18. G.854.1 (11/96)
    Management of the transport network - Computational interfaces for basic transport network model.
     
19. G.854.3 (03/99)
    Computational Viewpoint for Topology Management.
     
20. G.854.6 (03/99)
    Computational Viewpoint for Trail Management.
     
21. G.854.8 (03/99)
    Computational Viewpoint for Pre-Provisioned Adaptation Management.
     
22. G.854.10 (03/99)
    Computational Viewpoint for Pre-Provisioned Link Connection Management.
     
23. G.854.12 (03/99)
    Computational Viewpont for Pre-Provisioned Link Management.
     
24. G.855.1 (03/99)
    GDMO Engineering Viewpoint for the Generic Network Level Model.
     
25. G.861 (08/96)
    Principles and guidelines for the integration of satellite and radio systems in SDH transport networks.
     
26. G.872 (02/99)
    Architecture of Optical Transport Networks.

Digital Sections and Digital Line Systems - General

1. G.901 (11/88)
   General considerations on digital sections and digital line systems.
    
2. G.902 (11/95)
   Framework Recommendation on functional access networks (AN) - Architecture and functions, access types, management and service node aspects.

Parameters for Optical Fibre Cable Systems

1. G.911 (04/97)
   Parameters and calculation methodologies for reliability and availability of fibre optic systems.

Digital Sections at Hierarchical Bit Rates Based on a Bit Rate of 2048

1. G.921 (11/88)
   Digital sections based on the 2048 kbit/s hierarchy.

Digital Line Transmission Systems on Cable at Non-Hierarchical Bit Rates

1. G.931 (11/88)
   Digital line sections at 3152 kbit/s.

Digital Line Systems Provided by FDM Transmission Bearers

1. G.941 (11/88)
   Digital line systems provided by FDM transmission bearers.

Digital Line Systems

1. G.950 (11/88)
   General considerations on digital line systems.
    
2. G.951 (11/88)
   Digital line systems based on the 1544 kbit/s hierarchy on symmetric pair cables.
    
3. G.952 (11/88)
   Digital line systems based on the 2048 kbit/s hierarchy on symmetric pair cables.
    
4. G.953 (11/88)
   Digital line systems based on the 1544 kbit/s hierarchy on coaxial pair cables.
    
5. G.954 (11/88)
   Digital line systems based on the 2048 kbit/s hierarchy on coaxial pair cables.
    
6. G.955 (11/96)
   Digital line systems based on the 1544 kbit/s and the 2048 kbit/s hierarchy on optical fibre cables.
    
7. G.957 (06/99)
   Optical interfaces for equipments and systems relating to the synchronous digital hierarchy.
    
8. G.958 (11/94)
   Digital line systems based on the synchronous digital hierarchy for use on optical fibre cables.

Digital Section and Digital Transmission Systems for Customer Access to ISDN

1. G.960 (03/93)
   Access digital section for ISDN basic rate access.
    
2. G.961 (03/93)
   Digital transmission system on metallic local lines for ISDN basic rate access.
    
3. G.962 (03/93)
   Access digital section for ISDN primary rate at 2048 kbit/s.
    
4. G.962 Ammendment 1 (06/97)
   Maintenance Channel.
    
5. G.963 (03/93)
   Access digital section for ISDN primary rate at 1544 kbit/s.
    
6. G.964 (06/94)
   V-Interfaces at the digital local exchange (LE) - V5.1-Interface (based on 2048 kbit/s) for the support of access network (AN).
    
7. G.965 (03/95)
   V-Interfaces at the digital local exchange (LE) - V5.2 Interface (based on 2048 kbit/s) for the support of access network (AN).
    
8. G.966 (02/99)
   Access Digital Section for B-ISDN.
    
9. G.967.1 (06/98)
   V-Interfaces at the Service Node (SN): VB5.1 Reference Point Specification.
    
10. G.967.2 (02/99)
    V-Interfaces at the Service Node (SN): VB5.2 Reference Point Specification.
     
11. G.967.3 (03/00)
    Protocol Implementation Conformance Statements for Interfaces at VB5 Reference Points.

Optical Fibre Submarine Cable Systems

1. G.971 (04/00)
   General features of optical fibre submarine cable systems.
    
2. G.972 (04/97)
   Definition of terms relevant to optical fibre submarine cable systems.
    
3. G.973 (11/96)
   Characteristics of repeaterless optical fibre submarine cable systems.
    
4. G.974 (03/93)
   Characteristics of regenerative optical fibre submarine cable systems.
    
5. G.975 (11/96)
   Forward error correction for submarine systems.
    
6. G.976 (04/97)
   Test Methods Applicable to Optical Fibre Submarine Cable Systems.
    
7. G.977 (04/00)
   Characteristics of Optically Amplified Optical Submarine Cable Systems.

Optical Line Systems for Local and Access Networks

1. G.981 (01/94)
   PDH optical line systems for the local network.
    
2. G.982 (11/96)
   Optical access networks to support services up to the ISDN primary rate or equivalent bit rates.
    
3. G.983.1 (10/98) + Corr 1 (06/99)
   Broadband Optical Access Systems Based on Passive Optical Networks (PON).
    
4. G.983.2 (04/00)
   ONT Management and Control Interface Specification for ATM PON.
    
5. G.991.1 (10/98)
   High Bit Rate Digital Subscriber Line (HDSL) Transceivers.
    
6. G.992.1 (06/99)
   Asymmetric Digital Subscriber Line (ADSL) Transceivers.
    
7. G.992.2 (06/99)
   Splitterless Asymmetric Digital Subscriber Line (ADSL) Transceivers.
    
8. G.994.1 (06/99)
   Handshake Procedures for Digital Subscriber Line (DSL) Transceivers.
    
9. G.995.1 (06/99)
   Overview of Digital Subscriber Line (DSL) Recommendations.
    
10. G.996.1 (06/99)
    Test Procedures for Digital Subscriber Line (DSL) Transceivers.
     
11. G.997.1 (06/99)
    Physical Layer Management for Digital Subscriber Line (DSL) Transceivers.
     
12. Supplement 29 to Series G Recommendations
    Planning of Mixed Analogue-Digital Circuits (Chains, Conections).
     
13. Supplement 32 to Series G Recommendations
    Transmission Aspects of Digital Mobile Radio Systems.
     
14. Supplement 37 to Series G Recommendations
    ITU-T Recommendation G.763 Digital Circuit Multiplication Equipment (DCME) Tutorial and Dimensioning.
     
15. Supplement 38 to Series G Recommendations
    Variable Bit Rate Calculations for ITU-T Recommendation G.767 Digital Circuit Multiplication Equipment (DCME).