Broadband Related > Telephony Wiring + Equipment
FTTC DSLAM
adslmax:
Finally for the first time since 2014. Openreach engineer accepted and let me take a photo of the dslam of the fibre cabinet (pcp 8) as I asked what he was doing as he just connected new line card for the customer. Also I asked him when will g.fast become available, he say around in this July for my g.fast to go live.
Thanks OR for taking my time of this photo.
adslmax:
Went home and checked my connection stats after new card installed at the cabinet
--- Code: ---xDSL
Mode VDSL2
Traffic Type PTM
Status Up
Link Power State L0
Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 4.1 7.0
Attenuation (dB) 11.5 0.0
Output Power (dBm) 12.4 -0.3
Attainable Rate (Kbps) 78035 24751
Rate (Kbps) 79999 19999
B (# of bytes in Mux Data Frame) 130 237
M (# of Mux Data Frames in an RS codeword) 1 1
T (# of Mux Data Frames in an OH sub-frame) 0 42
R (# of redundancy bytes in the RS codeword) 8 16
S (# of data symbols over which the RS code word spans) 0.0518 0.3781
L (# of bits transmitted in each data symbol) 21468 5374
D (interleaver depth) 16 1
I (interleaver block size in bytes) 139 127
N (RS codeword size) 139 254
Delay (msec) 0 0
INP (DMT symbol) 48.00 0.00
--- End code ---
adslmax:
Overall disappointed with FTTC got worse errored second on downstream clocking up 283 today since the new line card installed for other customer
--- Code: ---adsl info --stats
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 27304 Kbps, Downstream rate = 83273 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79999 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 5.9 9.7
Attn(dB): 11.5 0.0
Pwr(dBm): 12.4 -0.3
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 130 237
M: 1 1
T: 0 42
R: 8 16
S: 0.0518 0.3781
L: 21468 5374
D: 16 1
I: 139 127
N: 139 254
Q: 16 0
V: 14 0
RxQueue: 60 0
TxQueue: 20 0
G.INP Framing: 18 0
G.INP lookback: 20 0
RRC bits: 0 24
Bearer 1
MSGc: 186 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 5.3333 0.0000
L: 48 0
D: 3 0
I: 32 0
N: 32 0
Q: 0 0
V: 0 0
RxQueue: 0 0
TxQueue: 0 0
G.INP Framing: 0 0
G.INP lookback: 0 0
RRC bits: 0 0
Counters
Bearer 0
OHF: 0 1693887
OHFErr: 4015 1727
RS: 4094112000 3868739
RSCorr: 44729076 438175
RSUnCorr: 0 0
Bearer 1
OHF: 79787891 0
OHFErr: 0 0
RS: 957454693 0
RSCorr: 76 0
RSUnCorr: 0 0
Retransmit Counters
rtx_tx: 2495484 0
rtx_c: 227402 0
rtx_uc: 21275 0
G.INP Counters
LEFTRS: 853 0
minEFTR: 79982 0
errFreeBits: 1563622929 0
Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 3879476186 0
Data Cells: 3425797207 0
Drop Cells: 0
Bit Errors: 0 0
Bearer 1
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 0 0
Data Cells: 0 0
Drop Cells: 0
Bit Errors: 0 0
ES: 283 552
SES: 86 5
UAS: 0 0
AS: 1281791
Bearer 0
INP: 48.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 3.98
OR: 0.01 64.22
AgR: 80614.82 20063.54
Bearer 1
INP: 4.00 0.00
INPRein: 4.00 0.00
delay: 3 0
PER: 16.06 0.01
OR: 95.62 0.01
AgR: 95.62 0.01
Bitswap: 60221/60221 31589/31604
Total time = 14 days 20 hours 3 min 11 sec
FEC: 44729076 438175
CRC: 4015 1727
ES: 283 552
SES: 86 5
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 3 min 11 sec
FEC: 11334 326
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: 45419 2716
CRC: 0 1
ES: 0 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 20 hours 3 min 11 sec
FEC: 41846954 258179
CRC: 3806 769
ES: 271 111
SES: 81 5
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 887279 13113
CRC: 209 317
ES: 12 56
SES: 5 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 14 days 20 hours 3 min 11 sec
FEC: 44729076 438175
CRC: 4015 1727
ES: 283 552
SES: 86 5
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
>
--- End code ---
Look like DLM might act tonight?
[attachment deleted by admin]
burakkucat:
I feel I should correct a few facts.
* An Openreach technician (or engineer, it you wish) does not have access to the cabinet equipped with the electronics (i.e. the DSLAM). It would have been a member of the BT Operate division or a contractor working on BT Operate's behalf.
* A new line card is not installed for an end-user (i.e. you or me). A line-card has either been swapped out (perhaps due to defective ports) or a new line card has been added to the system, to provide further ports (i.e. a system upgrade). However the statement "he just connected new line card for the customer" could well be correct as the "customer" would be Openreach (i.e. Openreach is the "customer" of BT Operate).What we see in the above image is a Huawei SmartAX MA5603T MSAN, with all six line card slots fully occupied.
michty_me:
Pretty sure it's well over 1000 ES a day before DLM will make any action.
I would leave it alone. Probably nothing you can do about it either if it's from another customer being added.
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