[AusNOG] LSS ADSL vs ULL ADSL - which is more reliable?

[Radek Tkaczyk]

Hi Guys,

I have always preferred a LSS (Line Sharing Service) ADSL service compared to a ULL (Unconditioned Local Loop) ADSL service (i.e. naked).

This is because with a ULL service, you don't have a dial tone to be able to troubleshoot with, and I hear that the Telstra techs in the field sometimes get lazy, and if they don't hear dial tone on a line, they assume its vacant and pinch that line for another customer, instead of properly checking for voltage on the pair. This may not be the case anymore given how prevalent naked services are, but it's still a valid point I suppose. Then there is the problem of ADSL codes constantly getting dropped from the line. If a user updates PSTN records like changing a company name, decides to move PSTN providers, or a myriad of other events, the ADSL codes get stripped from the line.

However, these days we are starting to run into so many problems with ADSL filters, devices interfering with the ADSL line, etc that I'm starting to think maybe my logic here is flawed.

One of the big problems with using an LSS ADSL service, is that when there is a PSTN fault on the line, the end user has to battle with Telstra to get the PSTN fault repaired, and we are helpless to assist because we don't own the PSTN line, and the customer has to run the gauntlet with Telstra on the issue. Really they just want us to handle it, and we can't.

At least with a ULL service, we can get our ULL + ADSL supplier (Be it Telstra Wholesale, AAPT, Vocus, etc) to handle the fault, end to end, and ADSL codes can't get stripped from the line.

What are other people's though on this subject? The Ethernet over Copper style services that use ULLs just work, and we don't have to revisit them once they are installed, but the constant attention an LSS ADSL service needs really makes me wonder if there is a better way?

Regards,

Radek Tkaczyk
Ph: 0413 383 231

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