Hi,
yes, i got it fully working with a lot of looking into the code and customizing. Dialing into a Jitsi conference and dialing out of a jitsi conference (invite a phone number) is working.
Jigasi registeres itself as "normal user" at sipxcom, so you have to create a user for jigasi and provide username, password, domain, etc. in the jigasi config.
To dial into a specific jitsi room (other than default siptest) you have to set an additional sip header in the SIP INVITE Message to Jigasi. The Header is: "Jitsi-Conference-Room=<jitsiRoomName>". Dialing into a empty Jitsi room is not possible yet due to a bug in jigasi v1.1. in case of an empty room, jigasi doesnt answer the call.
These are just approaches. There is many more magic behind the scenes, which is to complex to explain here.
In conculsion: jigasi isn't ready yet for working out of the box. You have to customize a lot on jigasi and sipx site.
Best
Max