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Paul_C
I've got the bills for the two cottages and there is definitely something strange. {.....}
As Simon says, if there are supposed to be two different numbers there, and after testing the incoming pairs you have nothing but the working service which is currently operating on pair 1 (orange/white), then something has been messed up and it's time to call BT and get it sorted out.
It sounds as though a change order has been completely garbled or misentered somewhere along the line.
plugwash said:If it can acheive 2 megabit/sec downstream and 512k upstream back to base (should be able to in most cases unless the line is REALLY s**t) and it needs 64kbit/s in each direction for the two voice links that still leaves plenty of capacity to make the data service more than 10 times faster than dialup. Particulally if the box was smart enough to dynamically allocate bandwidth.
2 Mb/s would be optimistic for many long lines though, and it's at the extremities of the exchange service area where line shortages are often the most acute. I'm in such a location, 5 miles from the exchange and right at the edge of its service area. We have only about 100 pairs running to the little estate of approx. 200 homes from the nearby village about a mile away, and there's already a line concentrator installed there to ease the shortage of pairs back to town (for non-DSL subs, obviously).
I can just about squeeze 1.2Mb/s from my line, but with a rather variable noise floor it's not a 100% reliable connection. 0.7 to 0.8 Mb/s is more realistic to ensure no drops as the noise level changes. There are other DSL lines where even those speeds are a little on the optimistic side due to plant issues and distance. There are people on lines where 0.5 Mb/s is realistically all that can be achieved reliably. Fair enough, you could still run two 64 kb/s voice channels over that and have faster DSL download speeds that with dialup (especially if dialup is over DACS). But it would be a huge investment to design and deploy when other systems are in the pipeline.