Level 2: Localised area performance
The purpose of Level 2 of the Network Reliability Framework is to improve the operation of poorly performing parts of the Telstra telephone network, particularly in regional and rural Australia.
Under the Level 2 NRF arrangements, cable runs (a set of 10 or 100 copper wire pairs within a physical cable sheath) are the focus of performance monitoring and remediation. A cable run is defined in the NRF licence conditions as a set of Telstra facilities, located between an exchange and the network boundary, which includes at least one set of 10 or 100 copper wire pairs within a physical cable sheath. Telstra is required to identify the 40 lowest performing cable runs each month, based on a fault rate measure known as the 'Average Network Event Volume (ANEV)'. This measure provides a broad indication of performance (and a good guide to fault performance) and are easily captured in current IT systems within Telstra.
The NRF licence conditions provide a greater focus on regional Australia by mandating minimum remediation quotas for cable runs from smaller Exchange Service Areas (ESAs) - an ESA refers to a grouping of services which are generally associated by a single telephone exchange. Each month, Telstra is required to select at least:
- 5 cable runs with 1-100 operational CSG services (60 per annum);
- 15 cable runs with 101-1000 operational CSG services (180 per annum);
- 10 cable runs with 1001 - 10,000 operational CSG services (120 per annum); and
- 10 further cable runs (120 per annum) identified as poorly performing regardless of the number of services.
Following remediation, these cable runs will be assessed for a 90% decrease in ANEV over a 6 month period compared with the reported level prior to cable run remediation. Failure to achieve a 90% reduction will result in further remediation and assessment unless ACMA agrees that no further action is required.
Telstra reported that as at 30 June 2016, it had completed remediation and monitoring of 473 cable runs (in the 2015–16 financial year) some of which had been identified in the previous reporting period. It also chose to remediate an additional 385 cable runs for operational reasons. Telstra estimated that remediation work undertaken at Level 2 of the NRF in 2015–16 improved the reliability of 24,743 services in operation.
Further information on Telstra's obligations under the NRF is available from ACMA's Networks Section.