1. 1989 -Bellcore internal paper describes ADSL with 1.5 Mbps downstream and 16 or 64 kbps upstream;IP-based VDSL Modem,2006
2. The first DSL connection is made between Bell Atlantic with Nortel modems. The "line code" Olympics are held in March;Nortel abandons ADSL effort. Alcatel switches from QAM to DMT. AT&T stays with CAP. Motorola and Analog Devices launch silicon efforts around DMT
3. Implementation of DMT: ADSL