Cloud Connector Edition (CCE) 503 Proxy Invite Failed
Had a very strange one the other day. A customer reporting not be able to receive some calls via a CCE. I do love good a CCE fault. As this was connected to an AudioCodes SBC, the first thing I did was open up Syslog Viewer and fire some calls in. Straight away I could see the calls were being rejected by mediation - “SIP/2.0 503 Proxy INVITE failed Error: Unable to establish a connection”. ...