In 1998 and 1999, Telef nica Cable (now 100 owned by Telefonica) in Spain started what was called the "Pilot Project Imagenio" to technically prove the feasibility of offering broadband services over networks IP type connections based on xDSL access type, in what is called IPTV. The experience lasted 18 months and involved the deployment of 20 access nodes for various provincial capitals, with the participation of nearly 400 real users. As this technology pilots, participation in the experience was totally free. The technologies used were of ADSL and VDSL, as it had not yet developed the ADSL2 . In four cities deployed ADSL solution with a maximum distance of 1300 meters loop, and in other cities the technology used was of type VDSL, with a maximum distance of 300 meters loop.Both technologies are solutions based on proprietary protocols xDSL connection, since there were no definitions of current standards. In these technological drivers joined an Internet connection of users to broadband enable navigation. The data connection empowered downstream speeds of 6 Mbps and 1.5 Mbps upstream to these experiences of "Triple Play", was installed at the Ciudad de la Imagen (Pozuelo de Alarc n - Madrid) a header-based digital TV technology MPEG2 video compression. This header provided during the technological expertise to a total of 30 channels of Digital TV. Demonstrated the technical feasibility of the xDSL type technologies to offer triple play services ", in 2000 Telef nica has deployed a commercial pilot in the city of Alicante. This commercial pilot began on 15 January 2001 in order to verify the acceptance of such networks and services in the Spanish broadband market.Digital TV Headline City Image provided in this TV pilot signals encoded in the MPEG2 standard, ended up with 22 channels of digital TV: 5 national channels, 2 channels autonomic and 15 thematic channels. Throughout the 2005 Telefonica Imagenio service deployed in all provinces of Spain, using ADSL2 technology that provided greater coverage compared to ADSL, enabling client connections up to about 1300 meters in the loop. From 25 June 2007 until 29 November 2007, the service will gradually migrated to a new header TV, using MPEG4 compression technology that reduces bandwidth needed for each channel, leaving between 2 and 2.3 Mbps, allowing to increase the number of TV channels offered, which happened to be about 150 different, some of them in high definition (HDTV).
