webwat: Sounds like they confirmed your congestion issue and fixed it, don't know why Telecom can't provision backhaul more proactively...

I've been down this road July 2009, Aug 2010, Nov 2010, Apr 2011. reporting to my ISP when the VOIP became unusable. On 3 of the 4 occasions Telecom upgraded the Backhaul.

What is the best tool and measurements to establish early that there is a problem?
The VOIP test at http://www.voipreview.org/voipspeedtester.aspx give a lot of info. Even though the test server is not in NZ I am getting good VOIP results since the backhaul upgrade.
ComCom regulate the provision of 45k per ADSL connection, are there regulations on Ping times and packet loss of any type?

Regards Allen.