Network Reliability Framework for fixed voice services

Telstra prides itself on its level of service and this website presents the latest monthly data showing you the reliability of Telstra's fixed voice network (based upon Telstra fixed voice services that are subject to the Customer Service Guarantee) nationally and across 44 metropolitan and regional areas as set out in the table below. 

Two measures are included for each area:  

  1. The "Percentage of Customer Service Guarantee (CSG) Services* with no faults" in any given month.
    This measure describes the percentage of CSG Services that were fault-free in the month nationally and within each of the geographic areas. The table shows a very high percentage of services experiencing no faults on a monthly basis.

  2. The "Average Service Availability" in any given month.
    This measure means the percentage of time on average that CSG services were operational nationally and within each of the geographic areas, as a percentage of total time per month. 

Together, results for the two measures show that the vast majority of CSG services in any given month are fault-free and that where faults do occur, they are fixed promptly.

  • The Customer Service Guarantee (CSG) is a regulated performance standard that sets down maximum timeframes for the connection and rectification of fixed voice services for residential and small business customers.
 
 

September 2025 Network Reliability Information

Geographic Area Percentage of CSG Services with No Faults Average Service Availability
Adelaide - City 99.35 99.96
Adelaide - Suburbs 98.71 99.76
Brisbane - Inner Suburbs 99.84 99.97
Brisbane - City 100 100
Brisbane - Northern Suburbs 98.27 99.68
Brisbane - Southern Suburbs 98.74 99.63
Central Australia (NT Southern Region and SA Northern Region) 98.95 99.75
Melbourne - Bayside Suburbs 100 100
Melbourne - Inner Suburbs 100 100
Melbourne - City 100 100
Melbourne - Northern Suburbs 98.85 99.66
Melbourne - Southern Suburbs 98.77 99.76
Melbourne - Western Suburbs 98.8 99.83
NSW - Central Coast Region 94.82 98.31
NSW - North Western Region 98.2 99.68
NSW - Mid North Coast Region 94.78 98.22
NSW - New England Region 97.47 99.49
NSW - Greater Newcastle Region 98.12 99.29
NSW - Far North Coast Region 97.52 99.56
NSW - South Western Region 98.51 99.84
NSW - South Eastern Region 98.11 99.64
Northern Territory - Northern Region 97.92 99.55
Perth - Northern Suburbs 98.28 99.67
Perth - Southern Suburbs 98.95 99.85
Queensland - Central Region 98.86 99.67
Queensland - Far Northern Region 98.41 99.65
Queensland - Northern Region 98.46 99.5
Queensland - South Western Region 98.5 99.58
Queensland - Wide Bay Region 98.05 99.64
South Australia - South Eastern Region 98.83 99.83
Australian Capital Territory 100 100
Sydney - Inner Suburbs 99.94 99.96
Sydney - City 100 100
Sydney - Eastern Suburbs 99.83 99.91
Sydney - Northern Suburbs 99.75 99.88
Sydney - Southern Suburbs 99.36 99.78
Sydney - Western Suburbs 97.98 99.49
Tasmania 98.29 99.59
Victoria - Central Region 98.49 99.57
Victoria - South Eastern Region 98.53 99.74
Victoria - Western Region 97.96 99.72
West Australia - Midlands Region 98.6 99.46
West Australia - Northern Region 98.84 99.67
West Australia - South Western Region 97.85 99.59
National 98.22 99.60

Rather get in touch? Let's get you connected

Online help & support

Find answers to your frequently asked questions.

Get help

Sign in to the My Telstra app

View your services, pay your bill, troubleshoot tech issues, contact us via chat and much more.

My Telstra app

Multilingual support

Speak with us in your preferred language. We've got you covered.

Get multilingual support

Reach out to us

We're here to answer your questions.

Contact us