I got a request to test Kamailio and MS Teams side by side at the same customer.
IT department would like to use Kamailio with Blink SIP client and the HR and Management department would like to use MS Teams.
 
Makeing VIOP calls are not the problem. But how to exchange the present status and exchange chat messages? 
In Kamailio we use SIP SIMPEL / XCAP. 
 
Does someone knows a solution? As fare as I know Microsoft has removed the Xmpp Gateway function in the solution.
 
kind regards
Hans-Jürgen Brand