Hi I have developed a softphone using PJSUA 2.11 on macOS and Windows. The transport used for SIP is TCP and SRTP is mandatory. When I call the macOS version the call is accepted, but the Windows version rejects the call with PJMEDIA_SDPNEG_ENOMEDIA. Both UA have PCMA and PCMU codecs enabled. What could be wrong with Windows version ? thank you Bogdan