ITU-T - International Telecommunication Union/ITU Telcommunication Sector
适用范围
This Recommendation makes use of the generic extension mechanism defined in the IEEE 1905.1a 2014 standard to include ITU-T G.9960@ ITU-T G.9961@ ITU-T G.9962@ ITU-T G.9963 and ITU-T G.9964 (referred to hereafter as ITU-T G.996x) and ITU-T G.9954 transceivers ITU-T G.991.1@ ITU-T G.991.2@ ITU-T G.992.1@ ITU-T G.992.2@ ITU-T G.992.3@ ITU-T G.992.4@ ITU-T G.992.5@ ITU-T G.993.1@ ITU-T G.993.2@ ITU-T G.993.5 and ITU-T G.9701 (referred to hereafter as ITU-T xDSL) and ITU-T G.9991 (referred to hereafter as ITU-T G.vlc) as supported networking technologies under the abstraction layer defined by 1905 technology (see [IEEE 1905.11a 2014]). The IEEE 1905.1 standard defines an abstraction layer for multiple networking technologies@ which presents a common virtual interface (the 1905 MAC SAP) to upper layers for the underlying networking technologies below the relevant 1905.1 Interface SAP(s). As indicated in clause 1.1 of the IEEE 1905.1 standard@ 1905 is extensible to work with network technologies not included in the original standard. This Recommendation makes use of the generic extension mechanism described in IEEE 1905.1a to specify an extension to the IEEE 1905.1 standard that introduces the ITU-T network technologies as additional underlying network interfaces for the 1905 abstraction layer.