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DiscoDave1
Aspiring Contributor
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Message 1 of 1

FTTC Band Dropped to 0

I'm in an unusual situation where my sync speed is more than my attainable. However recently I've noticed that one of my downstream band SNR has dropped to 0 does anyone know what would cause this?

I've done a noise test on the line - no issues

DSL stats below

Screenshot from 2021-01-07 15-12-18.pngScreenshot from 2021-01-07 15-11-58.pngScreenshot from 2021-01-07 15-11-47.png

 

Stats summary

Stats recorded 07 Jan 2021 15:38:04

DSLAM type / SW version:	BDCM:0xa4a1 (164.161) / v0xa4a1
Modem/router firmware:  	AnnexA version - A2pv6C038m.d24j
DSL mode:               	VDSL2 Profile 17a
Status:                 	Showtime
Uptime:                 	1 day 3 hours 0 min 48 sec
Resyncs:                	5 (since 25 Nov 2020 17:20:02)
			
				Downstream	Upstream
Line attenuation (dB):  	22.1		0.0
Signal attenuation (dB):	Not monitored		
Connection speed (kbps):	39545		9047
SNR margin (dB):        	3.1		5.9
Power (dBm):            	13.3		6.3
Interleave depth:       	4		1
INP:                    	52.00		0
G.INP:                  	Enabled		Not enabled
Vectoring status:       	5 (VECT_UNCONFIGURED)		

RSCorr/RS (%):          	1.0730		1.6974
RSUnCorr/RS (%):        	0.0000		0.0000
ES/hour:                	3.07		1.79

Connection stats

xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:	1
Last initialization procedure status:	0
Max:	Upstream rate = 9039 Kbps, Downstream rate = 32128 Kbps
Bearer:	0, Upstream rate = 9047 Kbps, Downstream rate = 39545 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):	 3.1		 5.9
Attn(dB):	 22.1		 0.0
Pwr(dBm):	 13.3		 6.3
			VDSL2 framing
			Bearer 0
MSGc:		-6		26
B:		227		237
M:		1		1
T:		0		37
R:		10		16
S:		0.1834		0.8355
L:		10383		2432
D:		4		1
I:		238		127
N:		238		254
Q:		4		0
V:		0		0
RxQueue:		96		0
TxQueue:		24		0
G.INP Framing:		18		0
G.INP lookback:		24		0
RRC bits:		0		24
			Bearer 1
MSGc:		90		-6
B:		0		0
M:		2		0
T:		2		0
R:		16		0
S:		10.6667		0.0000
L:		24		0
D:		1		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		1729223
OHFErr:		266		394
RS:		2112975640		1665064
RSCorr:		22673085		28263
RSUnCorr:	0		0
			Bearer 1
OHF:		6054287		0
OHFErr:		0		0
RS:		36325354		0
RSCorr:		50		0
RSUnCorr:	0		0

			Retransmit Counters
rtx_tx:		957452901		0
rtx_c:		37433180		0
rtx_uc:		261017		0

			G.INP Counters
LEFTRS:		1879		0
minEFTR:	39549		0
errFreeBits:	2580081265		0

			Bearer 0
HEC:		0		0
OCD:		0		0
LCD:		0		0
Total Cells:	3072979931		0
Data Cells:	733656840		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:		1440		1739
SES:		140		131
UAS:		205		104
AS:		97248

			Bearer 0
INP:		52.00		0.00
INPRein:	1.00		0.00
delay:		0		0
PER:		0.00		7.75
OR:		0.01		32.99
AgR:		39632.14	9079.74

			Bearer 1
INP:		2.50		0.00
INPRein:	2.50		0.00
delay:		0		0
PER:		16.06		0.01
OR:		47.81		0.01
AgR:		47.81	0.01

Bitswap:	55642/55643		879/884

Total time = 1 days 15 min 4 sec
FEC:		409285087		383382
CRC:		5780		10429
ES:		1440		1739
SES:		140		131
UAS:		205		104
LOS:		3		0
LOF:		28		0
LOM:		1		0
Latest 15 minutes time = 4 sec
FEC:		2		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:		1000		0
CRC:		0		0
ES:		0		0
SES:		0		0
UAS:		0		0
LOS:		0		0
LOF:		0		0
LOM:		0		0
Latest 1 day time = 15 min 4 sec
FEC:		1002		0
CRC:		0		0
ES:		0		0
SES:		0		0
UAS:		0		0
LOS:		0		0
LOF:		0		0
LOM:		0		0
Previous 1 day time = 24 hours 0 sec
FEC:		20528164		27328
CRC:		256		381
ES:		91		84
SES:		2		7
UAS:		0		0
LOS:		0		0
LOF:		0		0
LOM:		1		0
Since Link time = 1 days 3 hours 47 sec
FEC:		22673085		28263
CRC:		266		394
ES:		98		89
SES:		2		7
UAS:		0		0
LOS:		0		0
LOF:		0		0
LOM:		1		0
# 

 

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