Quote Originally Posted by usa2k View Post
Skype does not use SIP.

A test number that echos back anything you say could be a way to test.
sip:echo@iptel.org
I have outbound routing 456 set to "ring" it.
It does not actually ring but works right away after I dial 456#

There may not be many, especially since FreeWorldDialup lost its free aspect. There are other VoIP companies that permit SIP calling. None that I currently use.

Too bad VOIPo does not have test numbers ...

Suggestions:
sip:echo@in.voipo.com
sip:time@in.voipo.com

Would that include a Google Voice as a sip forward?