guardian edge, no angel

First thing that came to my mind was thank goodness guardian edge bites the dust - PGP far superior

We had some DREADFUL experiences with Guardian Edge - poor reliability and support.

Pitty Symantec have wasted 70m on that.

ADSL

I have used SIP devices with the Gradwell service over SDSL for some time now. It is great and easy to setup but there are occasional lost packets resulting in words missing from sentences. I don't see how this will ever be overcome if you're routing calls via the internet