Regarding Justvoip...Wht is strange is that, using my asterisk to register it and using sip.justvoip.com seems fine...It registers through my trixbox but i get a busy tone when using Justvoip as trunk.
So the question is: How can something which is not sip can register well through the PBX with a sip registrar?
Strange...Come on guys,we can find a solution for this!