This warning message can appear when running SoliCall Connect product. The warning message means that SoliCall Pro client is unable to get packets (SIP or RTCP) sent from the PBXMate server. This message will usually appear few seconds after the call starts. If you get this message, make sure no firewall in the network or on the client PC is blocking this communication. In addition, if your PBXMate server is on external IP and your clients are behind NAT, edit the configuration file of PBXMate and set UpdateRTCPIPPortFromIncomingRTCPIPPort=1