Digital Subscriber Line is a telephone loop technology that uses existing copper phones lines, and provides a dedicated, high speed Internet connection to homes and businesses.

xDSL or simply DSL are generic terms used for a family of related technologies, including ADSL, ADSL2, ADSL2+, VDSL, VDSL2, SHDSL, SDSL, G.fast and others.

Sisvel offers a joint license under the DSL patents held by Telefonaktiebolaget LM Ericsson (PUBL) and by Sisvel International S.A. (patents formerly owned by Panasonic System Networks Co., Ltd., a division of Panasonic Corporation), and which are essential to various DSL technology standards (the "DSL Patents").

The DSL Patents cover technologies used in a wide range of communication devices and services, which are used to provide broadband access to data networks, such as the Internet, including ITU-T Handshake procedures for digital subscriber line transceivers (“ITU-T G.994.1”), ITU-T Improved impulse noise protection for digital subscriber line transceivers (“ITU-T G.998.4”), Self-FEXT cancellation (vectoring) for use with VDSL2 transceivers (“ITU-T G.993.5”) as well as ETSI’s European Requirements for Reverse Powering of Remote Access Equipment (“ETSI TS 101 548”).

Additional information about the technical coverage of the DSL Patents, the terms and conditions of Sisvel licenses under the DSL Patents, including royalty rates, are available by visiting the relevant DSL subsections of our website.