Kitz Forum

Broadband Related => FTTC and FTTP Issues => Topic started by: adam on June 13, 2019, 10:36:37 PM

Title: MK4 faceplate frequent disconnects, XF-1e seems good.
Post by: adam on June 13, 2019, 10:36:37 PM
Some context, recently had vdsl activated at new (1960s) property. Probably about 800M away from the cabinet. The disconnects were so bad that DLM lowered my profile to a point where I dipped below the minimum guaranteed sync and I called my provider Vodafone who arranged an openreach engineer to come out. I wasn't there when he visited, but apparently he found a fault and replaced some cable possibly between some manholes between my and my neighbours property.

'Someone I know' also replaced the old oval shaped block terminal from the incoming cable and the master socket to a 2019 BT Openreach Telephone Master Socket NTE5c MK2 & VDSL/ADSL Faceplate MK4 which I purchased from eBay. This was installed before vdsl was activated.

So using the new NTE5c and MK4 Faceplate, the Vodafone router syncs reasonably well, but disconnects ~every hour or so. Unclipping the Faceplate and using an ADSL Nation XF-1e dongle style filter in the NTE5c, the disconnects seem to stop completely.

Could the Mk4 be faulty, or perhaps the XF-1e is coping better with my line conditions? My stats are (with the XF-1e):

VDSL   G.993.5 (VDSL)
Link type   Interleaved path

                         Downstream   Upstream
Actual data rate   37645 (Kbps.)   8248 (Kbps.)

                                Downstream   Upstream
SNR Margin           6.6 dB           6 dB
Loop Attenuation   24 dB           21.6 dB

Indicator name   Downstream   Upstream
FEC Corrections   39                   580771
CRC Error           49                   2

PPP session uptime   14 hours and 32 minutes

Thoughts?
Title: Re: MK4 faceplate frequent disconnects, XF-1e seems good.
Post by: burakkucat on June 13, 2019, 11:12:29 PM
The actual electronics of a Mk 3 and of a Mk 4 SSFP are identical. The problem comes with the clip-on presentation of the Mk 4 SSFP and the NTE5C behind it.  :-X

If the NTE5C plus Mk 4 SSFP was replaced with an NTE5/A and a Mk 3 SSFP then I strongly suspect that your problems would cease.
Title: Re: MK4 faceplate frequent disconnects, XF-1e seems good.
Post by: displaced on June 14, 2019, 12:04:52 AM
I’d try another modem if you’re using the supplied Vodafone unit.

My ~600m line ran for 4 years absolutely fine when I was on BT Infinity with an Openreach HG612 modem.  As soon as I switched to Vodafone, the line was barely up for an hour between resyncs.

I ended up banded before switching back to the HG612 - I got a DLM reset done and I’ve been back to normal for the past 2 years or so.
Title: Re: MK4 faceplate frequent disconnects, XF-1e seems good.
Post by: adam on July 08, 2019, 11:03:48 PM
Quote from: burakkucat on June 13, 2019, 11:12:29 PM
The actual electronics of a Mk 3 and of a Mk 4 SSFP are identical. The problem comes with the clip-on presentation of the Mk 4 SSFP and the NTE5C behind it.  :-X

If the NTE5C plus Mk 4 SSFP was replaced with an NTE5/A and a Mk 3 SSFP then I strongly suspect that your problems would cease.

Thanks, I'll consider the Mk3, if I can source one.

Quote from: displaced on June 14, 2019, 12:04:52 AM
I’d try another modem if you’re using the supplied Vodafone unit.

My ~600m line ran for 4 years absolutely fine when I was on BT Infinity with an Openreach HG612 modem.  As soon as I switched to Vodafone, the line was barely up for an hour between resyncs.

I ended up banded before switching back to the HG612 - I got a DLM reset done and I’ve been back to normal for the past 2 years or so.

Unfortunately I don't have another modem, I guess as it performed (in my opinion) very well at the previous property <100m copper, I hadn't considered it, although the extra stats would be useful.

I'm not sure if I became banded? when I had to power off for some electrical work, the downstream SNR margin is now ~7.9 / sync speed is 33480, changed from 6.6 / sync speed 37645

However, I have now been in sync for 18 days

Title: Re: MK4 faceplate frequent disconnects, XF-1e seems good.
Post by: Weaver on July 09, 2019, 11:47:39 PM
Found these on eBay
  * back of master socket - NTE5a (https://www.ebay.co.uk/itm/BT-Openreach-Type-Tel-Master-Socket-NTE5A-2019-B-box-IDC-Tool-Wiring-Ins/321771539294?hash=item4aeb140b5e&enc=AQADAAAC8FjVrDbVsZ8oH%2F8PNHtt9VX4%2Fw7FZcmMuqsX8uaFEduVCh0wTUxYcFDFDxAUfx%2Fka5iXUD%2BtnbCFi6NAM0Gpy2DNb9IY%2BEmnqrwb1vx56GE%2FOhT2dUqcqVPZWDPJCJ6%2Fbh3Dj3MpV3n9bG%2Bxz1rtkrBiT4G%2B1g59AOp3FeADZN0hK34RS2sx%2F5oZC6oHvGwL%2BEAbHhzeFHTkd5LW2N01oQjqT2Y6rG3iIA2g%2B%2FV55sIweqASrLrrM%2BYn6QFc4Hbxs2AKHMfKo2l1Sr1LXkCqR5VYEUI8TXD%2Fb1BE%2F7eKxU1xEWn6E%2F2QYuvWweRhCR21HqduZtObG5haKIumPDI4mr6coW7OUIdCaJ1dzSgwGsx%2FihEry4QIF2mFrOIM9MLt5QGX%2BQcW41JSlwKGZKINSFdqWlCfyG7qxMjhR53HEKsi9qiGDLJE6O79ASSiqfaJw0t%2BcPgtGyMsnWUrcqgKm3iVNSwe2gJaLur3Eyd0%2FGUakxzAkhxKuy8jCd31hBBQ0NfQjeJFj0CrlizWV9GJLGD0hZfzRkhYq3yi3Ascx4Liiup0lyhiVcEjsD2HHPUH4lDy9zW3XbqAuUsKq4K29QjkI%2BwtirplNv333sQruCNFGND1pZdgPWnxp52ThQ7WuBOIx5Ih6rFHFoLmhnqnIkvXsfrlrGZ19iWCK2LzmUI8Oj%2FuKkuqIG%2FXitLkDxr6GyMoIMsr9%2BuCYdygMxN3sHAVEZBtZD3VWO3QS6MJ0YJuAL7jD3SQpG1O3VRjrkyQtxhyKLf%2FvoH7v%2B%2BpGhoR6UJ%2FPdySGIKCmn5wktaWT%2Bt0xQCt4BHWTgufu0tqUBDq7xcI7hTkT2%2F5ahCnd4wOu2cKjGeR00Fe9frkn7ll72zlAeCaZLSwavy7Bxd8sdOC3gQx7AFrJAQF0UjutpvZdjFMYuHCSirBBHWjoVP2IUh2EyolukdbDvv%2BrVf45urAmmvhEPQZGDRZ9QOVw%2FshSfdENpxJndqdAlM4FcJ%2FC0bN&checksum=3217715392943b07e35cc4d44851b3d8d42943344d71) and
  * mk3 SSFP frontplate (https://www.ebay.co.uk/itm/Genuine-BT-Openreach-VDSL-Faceplate-MK3-For-NTE5a-Master-Socket-BNIB/333259985433?hash=item4d97d7d219:g:A2sAAOSwwCJdIglE)

and there are lots more alike too. These aren’t necessarily the best deals available and I haven’t checked the sellers out, so usual caveat