11Telecommunications requirements#

11.1Principal's telecommunications network#

The components of the Principal's telecommunications network to be provided by the Contractor shall comply with MRTS245 ITS Telecommunications Network (ITS TN).

The Principal Telecommunications Network shall provide:

1. a)a telecommunications port to each piece of field equipment as per the requirements specified in the respective MRTS documents
2. b)connectivity from all field equipment telecommunications ports (as stated in (a)) via the Layer 3 OSI Routing switch(es) to the Traffic Management Centre, including any redundant links required, and
3. c)all telecommunications between a) and b).

11.2Public telecommunication services#

Where necessary, the Contractor shall act as the Principal's agent in arranging for connection of a public telecommunications service to the Site in the name of the Principal. Within 14 days of a written request, the Principal will provide relevant details to enable the Contractor to complete the forms required by the public telecommunications service provider.

Temporary connections to a public telecommunications service shall be in the name of the Contractor.

Provision for telecommunications lines shall be provided in accordance with the requirements of AS/NZS 3085.1, AS/CA S008 and AS/CA S009.

11.3Telecommunication cables#

Telecommunication cables provided by the Contractor shall comply with the requirements of MRTS234 Communications Cables.

11.4Data speeds#

All ITS devices shall support communication at industry-standard bit rates appropriate to their function and application. For serial communication interfaces (e.g., RS232, RS485), devices shall operate at bit rates ranging from 9.6 kbps to 115.2 kbps, or higher if required. For modern Ethernet-based systems, devices shall support a minimum of 100 Mbps, with 1 Gbps or higher recommended for bandwidth-intensive applications. Wireless communication protocols, where applicable, shall comply with industry standards such as Bluetooth (1-2 Mbps), Wi-Fi (54 Mbps to 9.6 Gbps), or 5G (up to 10 Gbps). The selected bit rate must ensure reliable, low-latency data transfer and be compatible with the overall system architecture, while adhering to recognised industry standards for interoperability and performance.

11.5Network Devices#

Layer 2 and Layer 3 Network devices, such as switches and routers shall comply with the requirements of MRTS245 ITS Telecommunications Network (ITS TN).

11.5.1Network Termination Units (NTUs)#

All ITS devices requiring connectivity to the telecommunications network via a telecommunications provider network, shall interface through a Network Termination Unit (NTU). The NTU shall provide a reliable and secure connection to the telecommunications provider's infrastructure and comply with all relevant industry standards and regulatory requirements.