presence_b2b

This module acts as back to back user agent for presence events. In the future it will do subscriptions to reg events and presence with resource lists too.

It is accessible only using internal Querry Status API (QSA). Everywhere (in C code) you need subscriptions to presentity status, you only create an internal subscription to it and the rest is done by this module. It processes internal subscription and creates a SIP subscription (SUBSCRIBE-NOTIFY dialogi) to requested presentity. Every NOTIFY request produces new QSA message with status information into destination message queue.