I have a call establishement problem, the call flow is like this:
Lync client ---- Lync Server ---- SIP TRUNK ---- CCM8.6 ---- Voice gateway
After the client calls outside number the calling party can hear the called party but the called one cannot hear anything. And at this time lync still says calling after 40-50 seconds lync says call is established and the called one start hearing the calling one. What can cause this delay?