Hello! If Zen is not a 'BT Wholesale' provider then I apologise for the wrong forum.
I've been struggling to get a stable line with Zen on a BT landline. Finally we had an approx. 7 day period when packet loss was low and no resyncs. So then what happens? The BT DSLAM 'decided' to drop my target SNR down to 3db to get better speed. [censored]!
A full day of horrid-ness ensued (see ping monitor here http://www.thinkbroadband.com/ping/share/eb6c00a5762...
- note, speed was probably not 7.7 at this time).
Some interference on my line clearly requires 6 to 9db of SNR on the downstream side and when I can maintain that (with a resulting sync rate in the 8000 range) things are not too bad.
So I email Zen to ask what the heck is going on and they say, paraphrasing, "BT's DLM saw that my line was stable for a while and decided to try 3db margins again!".
This is like having my line managed by a 10-year old boy who just wants a little more speed. We already requested a change from 3db target on downstream to 6db a month earlier.
Zen says that there is nothing they can do about it as the system is automated. This means my line will go from working fine to unbearable every couple of weeks I guess!
I really can't believe this is correct. Some lines need 6db, some need 9db, maybe some work fine at 3db -- not mine. It is ridiculous for DLM to keep trying 3db and wrecking my line. Any advice?