SIP to SIP calls


Could anyone tell me if it is possible to make SIP to SIP calls with Asterisk?

Is it possible to dial something like this:

How would asterisk need to be configured to make and receive such calls (I believe you do not need a provider since the calls are all over the internet)


Yes, Asterisk may do this. I recommend having a look here:

hellow word
i have a digium TDM11B card, and I want to know how used it: all step of configuration to this card into linux red hat

Look here: