From: A novel network architecture for train-to-wayside communication with quality of service over heterogeneous wireless networks
Priority
Services
1 (low)
Passenger internet
2
Crew intranet
3
Diagnostics
4
Application update
Content update
TCMS event
5
CCTV security
6
Intercom (VoIP)
CCTV safety
TCMS cyclic
7
Public address
PIS data
8 (high)
Configuration traffic