3G systems use various services for sending video, audio, IR, serial, and USB communication. Active services can be viewed by running netstat -aun. The output of that command - in the Foreign Address column - will show a list of Multicast IP addresses along with port numbers (the number after the colon). The port number indicates the service.
| Category | Type | Port | Notes |
|---|---|---|---|
| Heartbeat/Unicast/UDP | video | 59002 | |
| audio | 59003 | ||
| ir | 59004 | ||
| serial | 59005 | ||
| gpio | 59006 | ||
| usb | 59007 | ||
| cec | 59008 | ||
| audio return path | 59009 | ||
| VideoIP Host encode | video | 59200 output (TX) 59201 or 59204 input (RX) |
|
| AudioIP Host encode | audio | 59300 | |
| IRoIP Host encode | IR | 59400 | |
| Serial over IP Passive | serial | 6752 | |
| Serial over IP Direct | serial | 6752 | |
| Serial over IP API | serial | 59500 | |
| KMoIP | usb | 59702 (TX) 59703 (RX) |
UDP |
| USBoIP | usb | 59700 | Always uses TCP |
| HW-USBoIP (data) | usb | 59202 | UDP, always the VideoIP port +2 |
| CEC | cec | 59800 (stream) 59801 (topology) |
UDP |
Receiver Output
Transmitter Output