In November 2003, the European Telecommunication Standards Institute (ETSI) organized a Video over DSL interoperability test event in Saarbruecken, Germany, with support from the European Advanced Networking Test Center (EANTC).

The one-week test under non-disclosure agreement targeted interoperability of voice and video services rather than the physical DSL infrastructure; it was co-located with the 2nd joint physical layer xDSL Plugtests event. This test addressed manufacturers of

• DSLAMs and DSL modems, for IP multicast and QoS transport interoperability
• Set-top boxes and headends / video content servers, for video services interoperability

The goal was to set up and test a multi-vendor Video over DSL infrastructure with components of different equipment manufacturers, complemented by emulators to show scalable interworking and reliability between DSLAMs, DSL modems, set-top boxes and video content servers. The test scenarios evaluated transport and service aspects of Video over DSL. The test plan was defined by EANTC, based in part on the work of the FS-VDSL and the ITU (H.610 / H.611).