Regarding the degradation of service caused by numerous DSL loops within the same cable: Trace, whomever told you this in the past, was correct. :thumb:
Particularly when more than one pair within a cable's binder group carries high speed data, interference between these data-pairs may increase the error rate for these high speed circuits. Normally, these error rates are maintained at acceptable levels by reducing the transmision level of various services such as ADSL. Unfortuantely, in my experience, this is not possible on HDSL circuits.
When providing HDSL across copper, like Bryan also suggested, try to ensure that the HDSLs are assigned to pairs within separate 25-pair binder groups.
