After about a month or so with of being active, our line has a weird issue that I can't work out.
The line has been stable up until now, SNR has been locked to 6db and sync speeds have been great..until last weekend.
I have contacted the ISP about this issue but I'd like to get some feedback from you guys who may have seen this issue before and know where to look/what to do.
What happens is the SNR will start off at 6db then suddenly either raise or drop. When it raises or drops, the sync speed will also drop to around 2500kbps rather than the 8500kbps+. Yesterday, the connection was fine from around 9am until 4.30am. Here are some graphs showing what's happening.
Things I've tried:
Changing RJ11 cable
Plugging directly into test socket
Changing plug sockets for the router
ISP increased target SNR to 9db (didn't help)
The master socket is the only socket we have wired up. Like I said, it's been stable until now and we haven't changed anything.
Any help with this would be great as it's driving me crazy!
Edit: Current stats:
ADSL Link Downstream Upstream
Connection Speed 2784 kbps 824 kbps
Line Attenuation 52.0 db 20.7 db
Noise Margin 7.7 db 7.0 db