Due to the signaling requirements of the Passenger Rail agency of South Africa (PRASA) OTN was chosen as the preferred backbone for their network in the Gauteng region.
The OTN N50/ N70 range of equipment is currently being installed by Siemens Ltd in the Gauteng 1 (Witwatersrand) region. OTN for the Gauteng 2 (Pretoria) region will be the next to be deployed.