In reply to a post by RobertoS:

Yes. The "A" line is if you have a very clean line between the FTTC cabinet, through the PCP, to your master socket. The "B" line is if there is anything dodgy between the cabinet and reaching your house, and/or you have bad wiring in the house or set it up badly.

In your case it looks as if the only factor the estimator is covering with the B figures is what your internal wiring may be like, as BTW don't know about that.

Bearing in mind that faulty electrical equipment next door could also cause problems, but that applies to all of us.

You should have no problem at all with any 40Mbps product, but note both TalkTalk retail and Plusnet only provide 2Mbps upstream on that. Most ISPs supply 10Mbps. If you don't upload much it probably won't matter. But lots of photos, or file backups, and a 10Mbps one may be advisable.

Also, BT Retail these days is 55/10, not 40/10. To me that doesn't matter but I believe the 55 is to do with streaming the highest definition TV or something like that. 40/10 might struggle.

All ISPs that provide the 80Mbps product give 20Mbps upstream on it, but of course it costs more.

Ok thanks.

Also how does isp guaranteed minimum speed work, for example just checked with sky bb checker and it says i can get the up to 38/40mb product.
If i get much lower speeds, ruling out dodgy wiring, filters etc,would i be able to cancel this product without penalty?

In reply to a post by roughbeast:

I am happy for my post to be deleted.

You can edit or delete it yourself up until 21:34. (Twelve hours from original posting).

In your case, with those estimates, there would be a glaring fault and the job should not have been signed off by the engineer working at the cabinet.

Your line should run at 80Mbps if on the 80/20 product. The 40Mbps is simply an Openreach speed cap. The underlying technology is identical. Given a valid installation there is no way it will not achieve the 40Mbps you are intending to order .

The 38 figure by the way is simply the maximum they can advertise, and means at least 10% of people on the 40Mbps product get a 38Mbps connection. Note that connection speed and throughput speed are not the same thing at all, but I believe Sky are pretty good at throughput speeds as well.

And I've explained why the two will differ by sometimes large margins on services where the speed is fluctuating

In reply to a post by RobertoS:

In your case, with those estimates, there would be a glaring fault and the job should not have been signed off by the engineer working at the cabinet.

Your line should run at 80Mbps if on the 80/20 product. The 40Mbps is simply an Openreach speed cap. The underlying technology is identical. Given a valid installation there is no way it will not achieve the 40Mbps you are intending to order .

The 38 figure by the way is simply the maximum they can advertise, and means at least 10% of people on the 40Mbps product get a 38Mbps connection. Note that connection speed and throughput speed are not the same thing at all, but I believe Sky are pretty good at throughput speeds as well.

Thanks again thats very helpful.

In reply to a post by David_W:

With those estimates, you will probably get significant extra speed from an up to 77 Mbit/s compared to an up to 38 Mbit/s product. It is up to you to decide what is worthwhile, remembering that you can usually upgrade without penalty but often cannot downgrade without serving a minimum contract period.

I suspect the FTTP mention is FTTP On Demand which is extremely expensive. It is very unlikely that Openreach will provide both FTTP and high speed FTTC to the same location.

Thanks.