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ITU-T G Suppl. 20 (10/1984) عربي | 中文 | English | Español | Français | Русский Possible combinations of basic transmission impairments in hypothetical reference connections Approval date: 1984-10-19 Approval process: WTSA Status: Superseded Maintenance responsibility: Further detail(s): Patent statement(s) EditionsRelated supplement(s) Ed. ITU-T Recommendation Status Summary Table of Contents Download 2 G Suppl. 20 (10/1984) Superseded - - here 1 G Suppl. 20 (11/1980) Superseded - - Not available ITU-T Supplement Title Status Summary Table of contents Download G Suppl. 4 (12/1972) Certain methods of avoiding the transmission of excessive noise between interconnected systems In force - - here G Suppl. 5 (10/1984) Measurement of the load of telephone circuits under field conditions In force - - here G Suppl. 7 (12/1972) Loss-frequency response of channel-translating equipment used in some countries for international circuits In force - - here G Suppl. 8 (12/1972) Method proposed by the Belgian telephone administration for interconnection between coaxial and symmetric pair systems In force - - here G Suppl. 17 (10/1984) Group-delay distortion performance of terminal equipment In force - - here G Suppl. 19 (10/1984) Digital crosstalk measurement (method used by the Administrations of France, the Netherlands and Spain) In force - - here G Suppl. 22 (10/1984) Mathematical models of multiplex signals In force - - here G Suppl. 26 (10/1984) Estimating the signal load margin of FDM wideband amplifier equipment and transmission systems In force - - here G Suppl. 27 (10/1984) Interference from external sources In force - - here 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 In force - - here G Suppl. 29 (03/1993) Planning of mixed analogue-digital circuits (chains, connections) In force - here here G Suppl. 32 (11/1988) Transfer of alarm information on 60-channel transmultiplexing equipment In force - - here G Suppl. 34 (11/1988) Temperature in underground containers for the installation of repeaters In force - - here G Suppl. 35 (11/1988) Guidelines concerning the measurement of wander In force - - here G Suppl. 36 (11/1988) Jitter and wander accumulation in digital networks In force - - here G Suppl. 39 (09/2012) Optical system design and engineering considerations In force here here here G Suppl. 40 (06/2010) Optical fibre and cable Recommendations and standards guideline In force here here here G Suppl. 41 (06/2010) Design guidelines for optical fibre submarine cable systems In force here here here G Suppl. 42 (02/2011) Guide on the use of the ITU-T Recommendations related to optical fibres and systems technology In force here here here G Suppl. 43 (02/2011) Transport of IEEE 10GBASE-R in optical transport networks (OTN) In force here here here G Suppl. 44 (06/2007) Test plan to verify B-PON interoperability In force here here here G Suppl. 45 (05/2009) GPON power conservation In force here here here G Suppl. 46 (05/2009) G-PON interoperability test plan between optical line terminations and optical network units In force here here here G Suppl. 47 (09/2012) General aspects of optical fibres and cables In force here here here G Suppl. 48 (06/2010) 10-Gigabit-capable passive optical networks: Interface between media access control with serializer/deserializer and physical medium dependent sublayers In force here here here G Suppl. 49 (02/2011) Rogue optical network unit (ONU) considerations In force here here here G Suppl. 50 (09/2011) Overview of digital subscriber line Recommendations In force here here here G Suppl. 51 (05/2012) Passive optical network protection considerations In force here here here G Suppl. 52 (09/2012) Ethernet ring protection switching In force here here here G Suppl. 1 (12/1972) Calculation of the stability of international connections established in accordance with the transmission and switching plan Superseded - - here G Suppl. 2 (12/1972) Talker echo on international connection Superseded - - Not available G Suppl. 2 (10/1976) Talker echo on international connections Superseded - - Not available G Suppl. 2 (11/1980) Talker echo on international connections Superseded - - Not available G Suppl. 2 (10/1984) Talker echo on international connections Superseded - - Not available G Suppl. 2 (11/1988) Talker echo on international connections Superseded - - here G Suppl. 3 (12/1972) Evaluation of echo control devices Superseded - - here G Suppl. 5 (12/1972) Measurement of the load of telephone circuits Superseded - - Not available G Suppl. 5 (10/1976) Measurement of the load of telephone circuits under field conditions Superseded - - Not available G Suppl. 5 (11/1980) Measurement of the load of telephone circuits under field conditions Superseded - - Not available G Suppl. 6 (12/1972) Example showing how the total value of line noise specified for the hypothetical reference circuit on open-wire lines might be broken down into its various components Superseded - - here G Suppl. 9 (12/1972) Roll effect in coaxial pair systems Superseded - - here G Suppl. 10 (12/1972) Application of Recommendation B.4 concerning the use of decibel Superseded - - here G Suppl. 11 (12/1972) Data on the cable ships of various countries Superseded - - Not available G Suppl. 11 (10/1976) Data on the cable ships of various countries Superseded - - Not available G Suppl. 11 (11/1980) Data on the cable ships of various countries Superseded - - Not available G Suppl. 11 (10/1984) Data on the cable ships of various countries Superseded - - Not available G Suppl. 11 (11/1988) Data on cable ships and submersible equipments of various countries Superseded - - here G Suppl. 13 (10/1976) Noise at the terminals of the battery supply Superseded - - here G Suppl. 14 (10/1976) Methods for measuring regularity return loss Superseded - - here G Suppl. 15 (10/1976) Almost-differential quasi-ternary code (ADQ code) Superseded - - here G Suppl. 17 (11/1980) Group-delay distortion performance of terminal equipment Superseded - - Not available G Suppl. 18 (11/1980) Information on submarine cables used in deep water Superseded - - Not available G Suppl. 18 (10/1984) Information on submarine cables used in deep water Superseded - - here G Suppl. 19 (11/1980) Digital crosstalk measurement (method used by the Administrations of France, the Netherlands and Spain) Superseded - - Not available G Suppl. 20 (11/1980) Possible combinations of basic transmission impairments in hypothetical reference connections Superseded - - Not available G Suppl. 20 (10/1984) Possible combinations of basic transmission impairments in hypothetical reference connections Superseded - - here G Suppl. 21 (11/1980) The use of quantizing distortion units in the planning of international connections Superseded - - Not available G Suppl. 21 (10/1984) The use of quantizing distortion units in the planning of international connections Superseded - - here G Suppl. 22 (11/1980) Mathematical models of multiplex signals. Superseded - - Not available G Suppl. 23 (11/1980) Explanatory notes for the information of designers of a maritime mobile satellite Superseded - - Not available G Suppl. 23 (10/1984) Explanatory notes for the information of designers of a maritime mobile satellite system Superseded - - Not available G Suppl. 23 (11/1988) Explanatory notes for the information of designers of a maritime mobile satellite system Superseded - - here G Suppl. 24 (10/1984) Consideration concerning quantizing distortion units of some digital devices that process encoded signals Superseded - - here G Suppl. 29 (11/1988) Objective for the mixed analogue/digital chain of 4-wire circuits Superseded - here here G Suppl. 30 (11/1988) Transmission plan aspects of land mobile telephony networks Superseded - here here G Suppl. 31 (11/1988) Status of work of presently considered digital circuit multiplication equipment (DCME) documents Superseded - here here G Suppl. 33 (11/1988) Examples of fibre design guidelines (diagrams used in Japan and in the United Kingdom) Superseded - - here G Suppl. 39 (10/2003) Optical system design and engineering considerations Superseded here here here G Suppl. 39 (2006) Erratum 1 (08/2006) - Superseded - - here G Suppl. 39 (02/2006) Optical system design and engineering considerations Superseded here here here G Suppl. 39 (12/2008) Optical system design and engineering considerations Superseded here here here G Suppl. 40 (04/2004) Optical fibre and cable Recommendations and standards guideline Superseded here here here G Suppl. 40 (11/2006) Optical fibre and cable Recommendations and standards guideline Superseded here here here G Suppl. 41 (2005) Erratum 1 (01/2006) - Superseded - - here G Suppl. 41 (05/2005) Design guidelines for optical fibre submarine cable systems Superseded here here here G Suppl. 41 (06/2007) Design guidelines for optical fibre submarine cable systems Superseded here here here G Suppl. 42 (02/2008) Guide on the use of the ITU-T Recommendations related to optical technology Superseded here here here G Suppl. 43 (11/2006) Transport of IEEE 10G base-R in optical transport networks (OTN) Superseded here here here G Suppl. 43 (02/2008) Transport of IEEE 10GBASE-R in optical transport networks (OTN) Superseded here here here G Suppl. 43 (12/2008) Transport of IEEE 10GBASE-R in optical transport networks (OTN) Superseded here here here G Suppl. 43 (06/2010) Transport of IEEE 10GBASE-R in optical transport networks (OTN) Superseded here here here G Suppl. 47 (10/2009) General aspects of optical fibre and cable Superseded here here here