Hi guys,
You are right with Asus routers but DSL-AX82U is using broadcom chipset so this should not be issue anymore. Also read some good reviews on this particular model.
I've got it already and I've noticed some strange things, maybe you could explain because I'm clueless.
So I've connected ASUS, connection was a breeze, everything worked as it should. Synced at fixed rate as old Zyxel did, I guess it's banded connection at 45mbits (confirmed ISP set this speed). SRN about 10db. First several hours no errors minimum FECS. Everything perfect. I've noticed (and it was same with Zyxel) that always after couple of hours SRN start very slowly dropping. Does not matter if day or night, no matter of interference, whatever, simply slowly it is dropping. At the beginning FEC were slowly increasing (100/s), few CRCs as well. With time progression this tempo is increasing and after 24h FEC error rate increased to 1000/s - now I have 40794150 FEC and also 6900 CRC with 2000 ES. SNR is now ~6.9db. Now if I disconnect the cable and reconnect, I'm pretty sure it would again connect at the same speed with SNR up to 10db. This is what I don't understand, I would expect that if the sync speed is the same SNR margin and error rate would be same as before disconnection. But no, everything works great. To me it looks like DLM is decreasing SNR slowly just to test the line ? I don't know but I don't have any other explanation.
Can someone explain this behavior why the line is slowly deteriorating which probably could end with modem resync ? I really don't understand that at the beginning the connection is rock stable and after 1 day I can see ton of errors. It still works pretty fine despite of these errors I just wonder what could be the problem and how to prevent. I would prefer stability of the connection.
Concerning tweaking the SNR offset - I don't think it works at all. Because if I change the offset modem always sync at the same speed and SNR as it was before. The only thing which is impacted is the Max Rate but it's probably because it is computed by router based on SNR attenuation. If I increase offset (+) it is lower and vice versa with negative offset (-) it is higher. SNR margin is the same so I don't understand this neither
Thanks.