In reply to a post by ryant704:

Self-Install is now going into Phase 2 by Openreach. [1]

[1] http://www.openreach.co.uk/orpg/home/updates/briefin...

this bit interests me

All devices currently in the Openreach Modem Bank will be regression tested and CPs can expect the output of that Regression Testing to be emailed to their nominated contacts by Friday, 15 November 2013. CPs may start to undertake performance testing on the release within the PTF from Monday, 9 December 2013.

so openreach are approving the devices used by the CP's, rather than just the CP's rolling out devices with no openreach testing.

No.

The noise margin is based on your actual or capped speeds - 19999/79999 and indicate that you could get slightly more which is reflected in the Maximum rate.


When my connection had a 2Mbps upload the Margin was around about 27dB, with a Maximum Achievable of 26Mbps. When I moved to a 20Mbps upload the figure dropped to around 12dB with a 19998 sync and Maximum Achievable remaining at 26Mbps.

In reply to a post by Chrysalis:

so openreach are approving the devices used by the CP's, rather than just the CP's rolling out devices with no openreach testing.

SIN 498, Sections 2.4 and 3, and particularly Appendix A.

Your noise margin is high but it is nothing to worry about.

You're on 80/20Mbps product, you are current'y synced at 80/20Mbps. See

6. Data rate: 19999 / 79995

The noise margin is set to target of 6. If your noise margin is above 6 this means your line has the room to improve on speed. Your line is in a connection where it is being capped by your CP (Communication Provider, ISP) due to the product/service you purchased off them.

You can see what the estimate is for those margins here with number 7.

7. Maximum data rate: 32440 / 94831 This is known as your attainable rates, though if you start seeing these decrease it will be due to Crosstalk due to the increase of FTTC subscribers.

Ok thanks for the info ryant704 and MHC

A mate at work was given a hh5 by one of the bt repair men when they came to sort out why his infinity keep dropping out when it rained (turned out the wire went thro a tree!! anyways they replaced the drop wire after moving him to the next pole along) he was also given a new white modem to use which is smaller and thinner then the hg612, i havnt seen it but he also say's it only has 2 led's on the front. are bt using a third type of modem now for infinity?

But the new Hub 5 doesn't have a WAN port for the ethernet feed between it and the VDSL modem AFAIK. There is one, but this is for FTTP only, well according to the briefest of training I underwent.

Why would the Home Hub 5 care if an FTTC modem rather than FTTP ONT was connected to its Ethernet WAN port? Both present PPPoE (most ISPs, including BT Infinity) or DHCP (Sky and TalkTalk).

Don't shoot the messenger ! Just relaying what was said on the training.

That thought had occurred to me too. Maybe it is just to differentiate between the two services, for support maybe ??

I wonder what chipset is being used in the VDSL side of the HH5?