G.993.1 VDSL (Very high speed Digital Subscriber Line) permits the transmission of asymmetric and symmetric aggregate data rates up to tens of Mbit/s on twisted pairs. G.993.1 is an access technology that exploits the existing infrastructure of copper wires that were originally deployed for POTS services. While POTS uses approximately the lower 4 kHz and ADSL/HDSL use approximately 1 MHz of the copper wire spectrum, G.993.1 uses up to 12 MHz of the spectrum. G.993.1 can be deployed from central offices or fromFibre-fed cabinets located near the customer premises.
ITU-T G.993.1 FRENCH-2004 Referenced Document
ISO/IEC 3309:1993 Information technology; telecommunications and information exchange between systems; high-level data link control (HDLC) procedures; frame structure
ITU-T G.117-1996 TRANSMISSION ASPECTS OF UNBALANCE ABOUT EARTH Study Group 12
ITU-T G.996.1-2001 Test Procedures for Digital Subscriber Line (DSL) Transceivers Series G: Transmission Systems and Media Digital Systems and Networks Digital Sections and Digital Line System - Access Networks Study Group 15
ITU-T G.997.1-2003 Physical layer management for digital subscriber line (DSL) transceivers (Study Group 15)
ITU-T I.432.1-1999 B-ISDN user-network interface Physical layer specification: General characteristics Study Group 13; 23 pp
ITU-T O.9-1999 Measuring Arrangements to Assess the Degree of Unbalance About Earth - Series O: Specifications of Measuring Equipment General Study Group 4; 19 pp