Hooray for the forum! But a consequent request ...
Could (David?) someone please add the additional instructions for setting up trace for the phone view as per http://www.tersus.com/#Id=5159 into the documentation at http://www.tersus.com/#Id=46
It would have saved me time when trace didn't work and then retrying a few times, installing another browser and so on ...
For best results, use the Firefox browser..