xDSL
Introduction
DSL (Digital Subscriber Line) makes use of the unused frequency spectrum of the twisted pair telephone cables by carrying a digital signal without interfering with the voice service.
ETSI is very active in the definition of physical layer standards for DSL technologies including DSL 'splitters' required to separate voice and data. The work originated with the concept of Integrated Services Digital Network (ISDN), and the so-called xDSL family has continued to grow ever since.
ETSI Plugtests™ Service have organized successful DSL interoperability events for Triple Play over DSL and other broadband access technologies.
Our Role & Activities
TC ATTM Working Group TM 6 is responsible for digital access transmission systems particularly for digital subscriber line systems (DSL) on balanced wired (twisted pair) Infrastructures and will produce within their scope:
- Specification of functional and physical characteristics of signals and interfaces on the physical line and at the network and the user side
- Frequency and spectrum management of bands allocated to these systems
- Specification of DSL filters and splitters
- Compatibility and co-existence studies between POTS/ PSTN and other technologies, particularly those sharing the same infrastructure.
- Specification of common DSL testing methodology
Standards
The following is a list of recently published and frequently downloaded standards. Please use the ETSI Work Programme to find further related standards.
| Standard No. | Standard Title |
|---|---|
| TR 102 139 | Compatibility of POTS terminal equipment with xDSL systems |
| TR 101 830 | Access networks; Spectral management on metallic access networks |
| TS 101 952 | Access network xDSL transmission filters |
| TS 183 019 | Network Attachment; Network Access xDSL and WLAN Access Networks; Interface Protocol Definitions |
| TR 102 390 | Access networks; Requirements for the support of Voice over DSL |
| TS 102 314-1 | Fixed network Multimedia Messaging Service (F-MMS); Part 1: Overview |
| TR 101 953 | Access network xDSL transmission filters |
| TR 101 830 | Access networks; Spectral management on metallic access networks |
| TS 101 952-1 | Access network xDSL splitters for European deployment; Part 1: Generic specification of xDSL over POTS splitters |
| TS 101 952-2 | Access network xDSL transmission filters; Part 2: VDSL splitters for European deployment; |
| TR 101 830-1 | Access networks; Spectral management on metallic access networks; Part 1: Definitions and signal library Part 1: Definitions and signal library |
| TS 101 271 |
Access transmission system on metallic pairs; Very High Speed digital subscriber line system (VDSL2); |