Hi Flavio
Flavio Tischhauser wrote:
Hi Thomas
On Thu, May 7, 2009 at 15:53, Thomas Kernen tkernen@deckpoint.ch wrote:
So for me there is no question the loop is functional and am trying to figure out how to get the loop retested. It is clear to me that in the VDSL modem Swisscom sets the profile to have a min of 10db margin and optimal is considered 12dB. So I strongly suspect the line could be retrained at a higher rate
The first thing you need to do is check the "technical bandwith" using the xDSL checker: http://xdsl.vadian.net/check.aspx?xdsl=xdsl%C2%AE=WSUB7EU7
This should give you a rough idea on the max profile that swisscom considers possible using some figures like line distance etc. If it is significantly higher than what you are seeing (based on your inital data, the final profile might be set down to 8000/1000), you can usually get the issue investigated. If the line has really gotten a lot better since the test started, you should be able to request a new "test phase" through support (you might have to argue that you have optimized your in-house cabling since the last test, that seemed to work well for others). You might have to wait for the current test to end (up to 2-3 weeks in total) before that.
The last step would be to open a speed ticket and get someone from swisscom to look at the DSLAM, switch you on a different cable etc. Of course this is only possible if the line checkers promise a lot higher speeds and you would get charged for the costs if the issue is in your in-house cabling. Best way to prevent this is to hook the modem directly to your HAK.
Thanks for the suggestions. So the link to the DSL checker is for ADSL only as far as I can tell. And yes the profile is higher via the Swisscom checker. And there has already been a case filed with Swisscom due to the dial tone outage, which they fixed (and that is when the line quality significantly improved in terms of dB margin and attenuation).
I guess I have no choice but to wait until the next automated test to be performed.
Anyway, thanks for the suggestions.
Thomas