Also see Wally's Excellent Tutorial
Use the menu "SIP options" and add or edit the entry by clcking on "properties" button
I'm going to add the entry randulo, use the talkshoe ip for the domain,
and make sure "register with domain..." is NOT
checked.
You need a username and password from talkshoe for this part.
IMPORTANT: make sure that under the "topology" section you are using STUN
and enter the server: stun.counterpath.net
Enable ICE seems to work here.

I'm going to add "Talkshoe" as a contact

I double clicked on Talkshoe in contacts and get a successful call.
