internet keeps dropping

Jul 9, 2018
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hello everyone !

this problem has been happening for more than a month, but 2 days ago it started happening way too many times that i cant have a stable connection for 3 mins .

i`ve upgraded my adsl to 2 m/s 3 month ago , was 120 kb/s for years
what i noticed that it drops when i use more than like 200~300 kb/s , even for less than a minute
crc builds up and the internet drops seconds after , two days ago it kept on dropping even if wasnt using any internet , so i have reset the router power then try to manage my internet usage to prevent this from happening .
i`ve tried connecting the router to all the sockets at home , hard reset few times , changed the cable , but nothing worked
i called my isp and they said they will look into it !
here is my router info :

tplink td-8810

ADSL Firmware Version : FwVer:3.20.17.0_TC3087 HwVer:T14.F7_11.2
Line State: Showtime
Modulation : ADSL2 PLUS
Annex Mode: ANNEX_M

SNR Margin: 6.7 13.5 db
Line Attenuation: 20.0 14.3 db
Data Rate: 15359 2045 kbps
Max Rate: 20852 2499 kbps
CRC: 2 0


crc usually goes from hundreds to thousands then the connection drops, i`ve also noticed that the snr goes down to 0.1
this is from system log :

1/1/2000 3:46:22> netMakeChannDial: err=-3000 rn_p=80544b08
1/1/2000 3:46:31> Last errorlog repeat 25 Times
1/1/2000 3:46:55> netMakeChannDial: err=-3000 rn_p=80544b08
1/1/2000 3:47:4> Last errorlog repeat 11 Times
1/1/2000 3:47:5> netMakeChannDial: err=-3000 rn_p=80544b08
1/1/2000 3:47:14> Last errorlog repeat 6 Times
1/1/2000 3:47:29> netMakeChannDial: err=-3000 rn_p=80544b08
1/1/2000 3:47:30> Last errorlog repeat 8 Times
1/1/2000 3:47:49> netMakeChannDial: err=-3000 rn_p=80544b08

this is always the same error when this problem happens

isp said they will check things on their end ,but they usually take alot of time and i need the internet for work, so should i just go ahead and buy a new router anyway ?