Ineresting if you got it working.
I have allways thought of the sip product and the webtelephone as two technically different products (I think/thaught they allmost do the same but technically work different.)
For my incomming numbers (acounts) I can do this:
1. Log into the running asterisk server: asterisk -vvvr
2. Se which incomming numbers or accounts that is registered at external service vendors: sip show registry
There is no registry entrys for Voipbuster, is it (??)
As I have sat up my Voipbuster account I think it will only work for outgoing calls. (Is there other ways to do it ?)
Note: I use a standard manually configured Asterisk distro so things might be slightly different.
I wouldn't believe that this setup would support incomming calls, but hopefully I'm wrong ..
http://www.voipbuster.com/en/sipp.html