I haven't tried this with Asterisk, but by chance just answered What are the XMPP/Jabber connection settings (domain/port) for HipChat Cloud? - I would assume the required settings are the same, so you might want to check into my resp. answer for details, plus Paul's additional remarks regarding conference usage.
...have mention name FirstnameLastname. Fe.: @MaartenCautreels This certainly helps to know who is being mentioned in a conversation. Imagine your colleague sends the following message...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs
We're bringing product updates and pro tips on teamwork to ten cities around the world.Save your spot