I'm using SIP-Communicator with openser. When I make a call from A to B, and
B accept the call, openser failed with:
WARNING:sl:sl_send_reply: I won't send a reply for ACK!!
In consequence, B stays connecting and waiting the OK to start the call.
It only happen with openser and sip-communicator. In SER (Sip Express
Router) it works fine, and with other sip phones (like x-lite) it also works
I don't know what fail.