Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[S.Stephenson]

Distances will probably be up to 400m for G.Fast.

[j0hn]

I read up to 500-550m for G-Fast.
In some circumstances the copper length could be considerably longer on G-Fast than an ADSL based service. a graph posted a couple weeks ago suggests around (or just over) half of homes are within 500m of their local cabinet, within the scope for G-Fast from the cabinet. I know that I'm a bit of a pessimist, but I'm not as confident as others on OR going deeper into the network, from a DP, on the scale others are hoping.

If the majority of homes on a PCP cab are within G-Fast range, I fear the minority will be missing out. I also don't see BDUK style funding for when G-Fast doesn't make commercial sense. In those circumstances, I'd certainly still be monitoring my connection.

Actually thinking about it, if in my best case G-Fast scenario the only copper on my line was around 20-30m from my nearest underground DP, I'd still very much want to monitor my connection the same way I do now.

[William Grimsley]

I'm 800 m, so I'm screwed anyway, maybe Openreach will have to install new cabinets eventually!

[gt94sss2]

Apologies, just thought because distances may be very small, it's less likely for issues to go wrong?

In some ways, the speed achieved is going to be much more sensitive to copper line conditions with g.fast than FTTC

[William Grimsley]

Really, I always thought that the less line length you had, the more reliable the connection was going to be. I didn't think that transmitting more data through a copper wire was going to cause it to degrade more?

[gt94sss2]

g.fast etc. uses more frequencies to achieve the higher data rates so its more susceptible to external interference

[William Grimsley]

Oh, I see. Is that why having an internal wiring fault on FTTC is more problematic than on ADSL both due to that and the higher throughput?

[burakkucat]

The following list is ordered (left to right) in terms of increasing bandwidth --

G.992.1 < G.992.3 < G.992.5 < G.993.2 < G.9700/G.9701

The increasing bandwidth implies the usage of higher frequencies and the usage of higher frequencies requires us to consider broadband circuits as radio frequency transmission lines, not audio circuits.