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Author Topic: Inside the Huawei MT992 G.FAST modem  (Read 2134 times)

smallal

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Inside the Huawei MT992 G.FAST modem
« on: September 14, 2018, 02:03:27 PM »

I had G.FAST installed a couple of days ago, BT sent the HH6XA router through the post but the engineer was kind enough to let me have a MT992 off his van as well.
Had a peek inside the MT992 & noticed that although it only has 1 LAN port fitted, the board is made to have 2 ports. Could this be a way to hack it as with the HG612 VDSL model I wonder.
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j0hn

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Re: Inside the Huawei MT992 G.FAST modem
« Reply #1 on: September 14, 2018, 02:40:31 PM »

Do you own a USB to TTL serial cable?
Would it be something you would be willing to attempt?

edit: the original MT992-10 that the OpenReach variant comes from only has a single Ethernet port.

https://e.huawei.com/en/products/fixed-network/access/ft/mt992
« Last Edit: September 14, 2018, 02:48:52 PM by j0hn »
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underzone

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Re: Inside the Huawei MT992 G.FAST modem
« Reply #2 on: September 14, 2018, 03:20:09 PM »

Very interesting. Also worth a fortune on ebay right now! They are very hard to get hold of.
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burakkucat

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Re: Inside the Huawei MT992 G.FAST modem
« Reply #3 on: September 14, 2018, 04:26:05 PM »

Very interesting.

Agreed.  :)

However, after close scrutiny of both images, I do not see any obvious location (for header pins) to provide access to the serial console.  :(  I suspect that it will need someone with an oscilloscope, to probe various possible locations, to identify where such connections could be made.
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DaveC

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Re: Inside the Huawei MT992 G.FAST modem
« Reply #4 on: September 14, 2018, 06:26:45 PM »

Out of interest, did you also get a "G.fast" faceplate fitted on your master socket?  If so, I think there would be interest to see photos of the internals of that as well.

Thanks!
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smallal

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Re: Inside the Huawei MT992 G.FAST modem
« Reply #5 on: September 14, 2018, 07:00:18 PM »

I don't think there is a G.FAST plate as such.
The engineer said I already had the correct plate, its a MK4.
« Last Edit: September 14, 2018, 07:17:59 PM by smallal »
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DaveC

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Re: Inside the Huawei MT992 G.FAST modem
« Reply #6 on: September 14, 2018, 07:29:16 PM »

I don't think there is a G.FAST plate as such.
The engineer said I already had the correct plate, its a MK4.

Interesting the engineer said that - there are photos circulating (I think originally from openreach documents) of a faceplate with "g.fast" written on it, but maybe that's just cosmetic (advertising g.fast), and the internals are the same as the MK4.
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smallal

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Re: Inside the Huawei MT992 G.FAST modem
« Reply #7 on: September 15, 2018, 01:26:35 AM »

I did notice the engineer had a new backbox & faceplate with him, but it was the same as I already have (MK4), so perhaps the photos were early versions of this plate.
Certainly it works fine as I'm getting the full 330/50 service (I'm only 80-90m from pod)
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dee.jay

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Re: Inside the Huawei MT992 G.FAST modem
« Reply #8 on: September 15, 2018, 11:39:08 AM »

I did notice the engineer had a new backbox & faceplate with him, but it was the same as I already have (MK4), so perhaps the photos were early versions of this plate.
Certainly it works fine as I'm getting the full 330/50 service (I'm only 80-90m from pod)

Very nice! It's great to know that for those who can at least get it, are seeing the full 330Mbps.
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smallal

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Re: Inside the Huawei MT992 G.FAST modem
« Reply #9 on: March 24, 2019, 11:15:58 AM »

Bad news, BT/Openreach are currently trialling self-install for the BT Ultrafast service.
If all goes well they intend to go live across the country by June.
So the engineers carrying the MT992 modems on their vans won't now visit.
Lets hope some of the promised 3rd party G.Fast kit hits the market soon.
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hacktrix2006

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Re: Inside the Huawei MT992 G.FAST modem
« Reply #10 on: April 09, 2019, 12:43:49 AM »

Ok second image shows a dot on a chip (Normally this is done with Bios chips be it on a mainboard or GPU),

Are you able to read the writing on that chip, as this might be a good place to start, specially since that chip is surrounded by pads for NAND/NOR flash.

Also do you know what that shield is holding?
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