| Time | Source | Type | Length | Stream | Callsign | Detail |
|---|
This is a real-time view of raw D-STAR UDP packets arriving at the reflector on port 20001. A raw socket sniffer captures every inbound packet and classifies it by type. The table updates every 2 seconds with the most recent packets.
Packet types: header marks the start of a voice transmission and contains the callsign routing fields (MY, UR, RPT1, RPT2). voice+data frames carry 20ms of AMBE-encoded audio plus 3 bytes of slow data. control packets are end-of-stream markers. keepalive and poll are periodic heartbeats exchanged between clients and the reflector to maintain connections.
Stream ID: Each voice transmission has a unique 2-byte stream ID. All packets belonging to the same transmission share this ID, making it easy to follow a single QSO through the log.
When to use this: The packet monitor is a diagnostic tool for troubleshooting connection issues, verifying that traffic from bridges or gateways is arriving correctly, checking keepalive health, and investigating protocol-level problems. Use the filter to isolate a specific callsign, packet type, or source IP.