We have 2 customers 1km from the exchange and still get 5Mbps up/down per copper pair. No customoers on longer lines yet so lack of data to draw meaningful conclusions on line length
Also good results with bonded lines - most we have done is 4 lines giving > 20Mbps up/down. Can bond up to 8 on our kit (Zhone)
In the bonded scenario, if one line fails service continues at lower bandwidth so some resilience is possible
It is certainly an excellent alternative to fibre at these bandwidths.
Smallest County - Biggest Broadband!
: The UK's first deployment of FTTC (subloop unbundling) with MPF