2 entries are registered on port 5445. It is a registered port (1024–49151) — IANA records an assignee, but nothing stops other software from listening here, which is why the number carries more than one entry.
Cisco Unified Video Advantage is a Cisco-designed communication solution that integrates video into Cisco IP Phones, enhancing unified communications deployments. It primarily facilitates video conferencing and collaboration over enterprise networks by managing video streams across various endpoints. The service typically uses UDP on port 5445 to enable efficient, real-time media transfer with minimal latency and overhead.
The registry says what 5445 is registered to. What is listening on it right now is decided by the host, and only the host can be asked. Each of these prints the process behind the socket.
linux
ss -ltnp | grep ':5445\b'
macos
lsof -nP -iTCP:5445 -sTCP:LISTEN
windows
netstat -ano | findstr :5445
On Linux and Windows the process name comes back with the socket; on macOS lsof needs sudo to name a process that isn't yours. Match what it prints against the 2 entries above.
A port number is not a service. Anything may listen on 5445 — what you actually met is decided by the host, not the registry. If a service is missing here, it belongs in the registry.