I never heard of multiple DSL lines wire to a home. one ADSL line can be trained to be the same as a T1. The max of an ADSL line is about 7 MB/s. If you want that high, you have to pay more, that's ...

While a single T1, E1, or DSL access line may have been sufficient in the past it may not be enough for many of today's business requirements which are seeing an increased demand for access bandwidth.