[asterisk-users] Call Completion

[bakko]

Hello,

I'm trying the Call Completion system. All work fine.

I still don't undesrtand how Asterisk work.

Does Asterisk use sip signaling or other protocol to send notifications?

On the Asterisk Wiki seems that the system is based on 
draft-ietf-bliss-call-completion-04 but this draft talk about SUBSCRIBE and 
NOTIFY.

I see nothing in sip capture.

Can you help me with this question?

Thank's

Regards