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[Black Sheep]

Following a trial, self-install FTTC is moving forward. As engineers, we will only need to visit the PCP to perform the necessary wiring connections, and the rest will be done by the EU ... i.e.: using the old-style dongle filters.

There was mention in the communique about ISP's developing their own combined modem and router, I'm assuming to do away with the current ECI/Huawei modems ?? Not much info, I know, but I'm sure you get the gist. 

[ColinS]

Following a trial, self-install FTTC is moving forward. As engineers, we will only need to visit the PCP to perform the necessary wiring connections, and the rest will be done by the EU ... i.e.: using the old-style dongle filters.

There was mention in the communique about ISP's developing their own combined modem and router, I'm assuming to do away with the current ECI/Huawei modems ?? Not much info, I know, but I'm sure you get the gist. 

Yeah!!!  :clap2: Well BS I'm happy to be (in effect) one of the first guinea pigs - after all they did trial this up here in Glasgow!  I even saw in the latest revision of SIN498 that they describe this as the 'distributed filter' model for the EU's CPE.

I intend now to go ahead and remove my FTTC SSFP (i-plate) and revert to the dongle method.  I shall post the results here.  But at the moment my attainable (94/34) exceeds the IP Profile, so even if I did lose the odd Mb/s it would be no loss at all really.    Well not till profile30a or vectoring anyway, and in those cases we will probably need new modems or at least firmware as well. 

[ColinS]

Well, I've converted and now run my VDSL from the extension socket at the end of my extension wiring.  The additional 10m of good, but not brilliant, internal wiring, provided the following results:
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max:    Upstream rate = 30917 Kbps, Downstream rate = 91372 Kbps
Path:   0, Upstream rate = 20000 Kbps, Downstream rate = 79999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3959)
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3959)
       VDSL Port Details       Upstream        Downstream
Attainable Net Data Rate:      30917 kbps         91372 kbps
Actual Aggregate Tx Power:        1.1 dBm          12.5 dBm
============================================================================
  VDSL Band Status        U0      U1      U2      U3      D1      D2      D3
  Line Attenuation(dB):  2.6     14.4    22.4     N/A    8.0     18.7    29.1

Signal Attenuation(dB):   N/A    13.6    21.6     N/A    8.0     18.7    29.1

        SNR Margin(dB):   N/A    14.6    14.6     N/A    9.0     9.2     9.2

         TX Power(dBm): -128.0  -29.8    1.1      N/A    8.3     8.1     6.7

#

This represents a loss in attainable DS of ~1.8Mb/s and US of ~2.9Mb/s.  It has to be admitted that the QLN test shows more (in the D2 & D3 bands) and slightly stronger (in the D1 band) noise spikes from broadcast radio stations than when run from the SSFP at the master socket.  However, there have only been 148 CRC errors in the last 50mins or so, but as I am using B-E's long-term stats monitoring it will remain under close scrutiny from here on in.

Nevertheless, I've still got more than 10% headroom above my IP profile of 80/20, and overall the experience is now much better, as I am no longer reliant on longer wireless links to the master socket, with all the retries that occur there, even with a wireless repeater in use in between. 

So, from my own personal point of view, a success (at the moment).  Time will tell what the DSLAM makes of it.