Confused over face-plate needed

As of now I am an ADSL2+ connection, but my usual good speeds relative distance and attenuation are drifting down. Subject to making sure the cause is in my wiring, I am considering FTTC, as IPlayer et al streaming suffers buffering. Also whether I do proceed or not, I would like to tidy my wiring by removing dangly filters.
I read about filters and Service Specific face plates and become mor and more confused, as to what I’d need.
My layout has a standard two part master socket in the hall, and in the room directly above is a BT hard wired extension. My modem-router is connected to the extension, and nothing else is, the phone being a DECT slave. The principal phone (answer phone) is in the hall. There no room for further wires or clutter.
Am I correct in believing that the up to date plates will allow me to have a xDSL connection via the extension? If I am, kindly advise me, which one I must buy. Please! 

No, the usual use of an SSFP would see it on the existing master socket downstairs, and the router connected there.
You can run a dedicated 'data only' link from an SSFP but would need something a little better than the current extension wiring to do so.

What line stats do you see from the router in its current connection, and again if connected in the test jack of the NTE ? Maybe improvements can be made to your current service so as you won't need the upgrade ?

Thank you. Is that data cable same as Ethernet, and requiring the current extension socket to be replaced?

I'll let you see stats ASAP, but ATM I'm not that well with an important engagement tomorrow.

Is that data cable same as Ethernet,

High twist pairs is best, so a pair in CAT5 or 6 would be best.

I'll let you see stats ASAP, but ATM I'm not that well with an important engagement tomorrow.

Get well soon, it's too nice a day for feeling pants.

In reply to a post by diputs36:

There no room for further wires or clutter.
Am I correct in believing that the up to date plates will allow me to have a xDSL connection via the extension?

As Zarjaz correctly advises: a data only link from a filtered faceplate would be best, however if additional wiring is undesirable then you could try using your existing extension connected to the A-B terminals on the back of a filtered faceplate that is fitted to the master socket in the hall. Upstairs, at the other end, replace the extension phone socket with a rj11 socket - ensure that you are using a suitable pair of wires and obviously the bell wire will not be connected.

This set up should be an improvement on your current two dangle filter layout and at a later stage, if you think additional wiring will be needed to improve things further, you could replace the current extension with a CAT5 or 6 cable and retain the filtered faceplate in the hall and the rj11 socket upstairs. The filtered faceplate, CAT5 or 6 cable plus rj11 socket set up is the ideal "data only" extension and is certainly desirable for VDSL2 (FTTC) if a modem can not be located in very close proximity to the master socket.

Best of luck.

In reply to a post by Zarjaz:

No, the usual use of an SSFP would see it on the existing master socket downstairs, and the router connected there.
You can run a dedicated 'data only' link from an SSFP but would need something a little better than the current extension wiring to do so.

What line stats do you see from the router in its current connection, and again if connected in the test jack of the NTE ? Maybe improvements can be made to your current service so as you won't need the upgrade ?

Line stats as presently set up

adsl info --stats
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 8000
Last initialization procedure status: 0
Max: Upstream rate = 1092 Kbps, Downstream rate = 6664 Kbps
Bearer: 0, Upstream rate = 1069 Kbps, Downstream rate = 5745 Kbps

Link Power State: L0
Mode: ADSL2+ Annex A
TPS-TC: ATM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 4.9 6.3
Attn(dB): 47.0 25.5
Pwr(dBm): 0.0 12.6

ADSL2 framing
Bearer 0
MSGc: 59 10
B: 89 24
M: 1 8
T: 2 6
R: 14 8
S: 0.4985 5.9429
L: 1669 280
D: 64 4

Counters
Bearer 0
SF: 8304340 19703
SFErr: 25 150
RS: 1079563948 370623
RSCorr: 16429 3317
RSUnCorr: 410 0

Bearer 0
HEC: 238 227
OCD: 0 0
LCD: 0 0
Total Cells: 1823036654 338874057
Data Cells: 18609629 2503717
Drop Cells: 0
Bit Errors: 21736 21120

ES: 90 109
SES: 53 4
UAS: 709 664
AS: 134559

Bearer 0
INP: 2.00 0.00
INPRein: 0.00 0.00
delay: 8 6
PER: 16.20 17.82
OR: 32.09 7.17
AgR: 5754.82 1072.73

Bitswap: 12053/12053 429/429

Total time = 1 days 13 hours 40 min 8 sec
FEC: 39563 3619
CRC: 2466 414
ES: 90 109
SES: 53 4
UAS: 709 664
LOS: 6 0
LOF: 35 0
LOM: 0 0
Latest 15 minutes time = 10 min 8 sec
FEC: 217 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 186 0
CRC: 2 0
ES: 1 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 13 hours 40 min 8 sec
FEC: 6757 2053
CRC: 7 53
ES: 5 41
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 32806 1566
CRC: 2459 361
ES: 85 68
SES: 53 4
UAS: 709 664
LOS: 6 0
LOF: 35 0
LOM: 0 0
Since Link time = 1 days 13 hours 22 min 49 sec
FEC: 16429 3317
CRC: 25 150
ES: 18 98
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
>

Less than a month ago sync was 7500kbps or more @ 3dB SNRM. That was v.good for distance and attenuation, I know.

I'll get round to running from test socket, but in meantime thought above might be useful in case something stands out

Meanwhile I have found my connection had been banded. Now banding has been removed.

Automatically or by an engineer?

That's puzzling. I don't see anything in your stats to suggest banding was in place. What are the stats like now, and what speeds were you seeing before the problem?

Also you say your attenuation has been drifting down. That would be extremely odd.

Are you with Plusnet by any chance, and you were told this by their support, on chat or twitter or wherever?