You already quoted the answer to that question

According to Openreach's Chief Engineer both the ECI modem and HH5A performs retransmission in the downstream direction only.

In reply to a post by mlmclaren:

You already quoted the answer to that question

According to Openreach's Chief Engineer both the ECI modem and HH5A performs retransmission in the downstream direction only.

That simply repeats Openreach's assumption that the HH5A supports G.INP, however I have already provided proof that it does not.

Does the HH5A comply with SIN 498?

lol....

This mythical proof you speak of.... knowone's yet witness it??

I have, and you

I'm curious how you could have proved it. I don't usually read these forums and was only directed to this thread because of a certain post, so apologies if you have already have said, but from a quick scan of the whole thread I couldn't see anything.

AFAIK there isnt any way an EU can determine themselves if their line has g.inp based on any information that they can get from the HH5A.

- The IPprofile % method doesnt work.
- You cant use speed compared against another modem. I get 6.5 Mbps more using a BCM chipset compared to a VRX268 chipset.
- Most lines see speed differentials depending on modem/chipset type.



Openreach have stated that the HH5A meets requirements of SIN 498 which only requires G.INP in the downstream direction.

If the modem is incapable of G.INP in both directions, then you should not be able to obtain a valid PPP session. This is why Openreach had to auto-update the f/w in all their ECI modems in late 2014 to ensure they could do downstream g.inp.

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btw.. can you get someone from your ISP to do a GEA service test. The figures you want are next to Profile Name.
This should advise your profile at the DSLAM. From indications last year on the Huawei cabs, it seemed to update pretty quickly if you changed your modem, so make sure you have the HH5A on when they run it.

In reply to a post by kitz:

Openreach have stated that the HH5A meets requirements of SIN 498 which only requires G.INP in the downstream direction

Except they haven't. The HH5A doesn't seem to be mentioned in that link.

snipped the relevant bits.
Bear in mind we had had an extremely long conversation a few weeks earlier, but I wanted something in writing hence it later being in print. All that info was double checked by Openreach before publication.

Huawei cabs using ECI modems and the BT HomeHub 5A losing anything up to 10Mbps of downstream speed and experiencing large amounts of latency. The affected equipment is BT Openreach/BT Retail supplied that should surely comply with SIN498.

As you note above, to comply with SIN 498, modems and routers must support retransmission in the downstream, but it is not a mandatory requirement in the upstream.

So you have made the assumption, not Openreach stating it.

So you have made the assumption, not Openreach stating it.

No.
I was told that both the ECI modem and HH5A could support retransmission in the downstream direction only.

I was sick of people misinterpreting what I was saying about g.inp.. which is specifically why I later got something to put in print.