Skip to main content
Enter your keywords
MENU
CLOSE
Main menu
home
Search the menu
Consumer advice
Help for telco customers
Help if you can’t pay your phone or internet bill
Help with phone or internet disconnection
Help for people experiencing domestic, family and sexual violence
Choosing a telco
Phone numbers: Choosing, keeping, moving and making them private
Contracts, bills and charges
NBN: connections and help
Telco complaints and problems
Reduce telemarketing: Do Not Call Register
EME and 5G
3G network switch off
Payphones
Resources for advocates and consumer groups
TV and radio
Complain about something on TV or radio
TV and radio reception and interference
Satellite TV
Gambling
Online gambling services
Rules for gambling ads
How we enforce rules for gambling services
Scams, Spam and telemarketing
Online misinformation
Safety and emergencies
Cabling and infrastructure
Phone towers and base stations
Electrical products and devices
Licensing and registrations
Telecommunications licences
Carrier licences and carriage service providers
Submarine cables
Apply to install a network facility
Broadcasting
Radiocommunications licences
How to become a cabler
Accredited persons
News media bargaining code
Rules and regulations
Infrastructure
Network facilities
Rules for operating around submarine cables
Statutory Infrastructure Provider (SIP) register
Cablers and technicians
Work as a registered cabler
Steps for antenna installers to fix TV reception
Spectrum and frequency assignment
How we plan and manage spectrum
Frequency assignment and coordination
Business operating procedures for spectrum
Telecommunications providers
TV and radio broadcasters
Subscription video on demand services
Telemarketing and e-marketing
Follow our rules to supply your electrical product
Interactive wagering providers
About the ACMA
Who we are
Engagement
Investigations and compliance
Research
Payments
Planning, reporting and policies
News and publications
Contact us
Careers
Sending SMS with your business/org name? You must
register your sender ID
now to avoid disruption by 1 July 2026.
Home
About the ACMA
News, speeches and publications
Publications
Investigation report: Optus May 2021
Investigation report: Optus May 2021
DOCX
793.54 KB
Investigation report: Optus May 2021
[DOCX, 793.54 KB]
Online Enquiry
Back to top
