To prescribe the rules for using communications equipment in the Network.
Communications equipment listed in the following table, or compatible with equipment listed in the table, may be used to establish spoken effective communication in the Network.
Before rail traffic travels in the Network, equipment fitted to communicate with Network Control must be working correctly.
If Network Control communications equipment is defective, the Network Controller must:
- tell Maintenance Representatives about the faulty equipment, and
- establish alternative communication methods.
If a train’s communications equipment becomes defective, Drivers must act in accordance with NTR 410 Defective equipment.
The following table lists the protocols to be used for each type of communications equipment.
In-cab Communication Equipment (ICE)
Discrete-channel if communicating with Train Control, or through a pre‑set or dialled‑in number.
Open‑channel if communicating with other trains or ground staff that are using portable handset.
Digital Train Radio System (DTRS)
Government Radio Network (GRN)
Open-channel and discrete‑channel
Treat as discrete‑channel