Australian Communications and Media Authority v TPG Internet Pty Ltd
[2014] FCA 382
At a glance
Source factsCourt
Federal Court of Australia
Decision date
2014-04-16
Before
Bromberg J
Source
Original judgment source is linked above.
Judgment (7 paragraphs)
BACKGROUND 7 From October 2010, TPG offered a home phone service product that was a landline telephone service for end users to make voice telephone calls, including calls to the emergency call service (the TPG home phone service or the service). The service was a pre-paid service. In 2011, the terms of supply for the service included a requirement in the following terms: At the time of registration, we debit $20 that is kept as a Security Deposit and used to pay for all home phone call usage charges. Once your deposit goes below $5, we will debit a sufficient amount from your bank account/credit card to top it back up again to $20. If your usage is high, this can occur more than once per month and more than $20 might need to be debited. You authorise to [sic] make such debits to your account/credit card. Your service will become inactive if our attempts to debit credit card/bank account to top up your deposit are unsuccessful. Any unused Security Deposit will be refunded back to you once you cancel the service. 8 The systems operating the TPG "controlled network" and "controlled facilities" for the TPG home phone service (the TPG systems) were originally designed so that for the period of time a customer failed to maintain an appropriate credit balance, calls made from that customer's TPG home phone service would not be connected, other than for calls to the emergency call service which would always be connected. Customers with a credit balance below $5 were given one week's notice before calls other than calls to the emergency call service were "barred" from their service. When the customer's credit balance was restored to at least $5, the barring of calls would cease. 9 The term "barred" means that the service will not carry calls of the specific barred type. Other than barring all calls apart from calls to the emergency call service, types of calls that are commonly barred from a service include calls to mobile phones, long distance calls and international calls. The status of a TPG home phone service is referred to as a "service category". "Barred All" refers to the service category for which all outgoing calls are barred other than calls to the emergency call service. TPG also refers to services in that category as being 'suspended' or 'inactive'. 10 The TPG home phone service combines voice over internet protocol or 'VOIP' technology with features of ordinary analogue phone services, such as ordinary handsets and phone numbers. For end users, the service operates in the same way as an ordinary telephone service. However, a complex hardware and software system sits behind the consumer interface to enable voice to be converted from a normal sound wave into digital form for transmission over an internet protocol or 'IP' network. That software also keeps track of the status of a customer's service to determine whether any, and if so what type of calls, have been barred from that customer's service. 11 When a phone call is made from a TPG home phone service, the call is transmitted to a group of computers, known as a server cluster, where software programmed by TPG directs the call to be processed in accordance with the status of the account. Mr John Vernon, a voice network engineer and architect for TPG, was entirely responsible for the design and creation of this software. 12 Prior to the launch of the TPG home phone service product in October 2010, Mr Vernon tested the software he had written to ensure that calls were properly processed. Mr Vernon was aware of the requirements for calls to the emergency call service to be carried and he conducted tests to ensure that 000 calls would be carried from all TPG home phone services, including those that were regarded by TPG as 'suspended' or 'inactive'. Those tests were all successful. 13 From its inception, the TPG home phone service product was popular and growth in customer numbers required rapid expansion of the TPG systems. 14 In March 2011, TPG took steps to increase the capacity of its systems. This was done, in part, by splaying outbound voice call traffic through two different pathways to the server cluster. In order to make the splay work, Mr Vernon amended the software code so that an additional number was automatically added to the destination number of each outbound call made from a TPG home phone service which directed the call through one of the two pathways. The new software code had to be incorporated individually for each service category. However, because of an oversight, Mr Vernon did not think to make the amendment to the service category described as "barred all". The result of this oversight was that calls from services in the "barred all" category made to the emergency call service simply failed. The evidence indicates that an end user making such a call would have heard a voice message saying, "calls to that number are not available" or words to that effect. 15 After making changes to the software code, Mr Vernon conducted tests to ensure the TPG systems were operating correctly. However, Mr Vernon failed to conduct tests in relation to 'suspended' or 'inactive' services. Despite knowing that it was TPG's intention that calls to the emergency call service be connected even if a service was 'suspended' or 'inactive', Mr Vernon failed to program the software in such a way or to check whether outbound calls to the emergency call service could be made from a 'suspended' or 'inactive' service. 16 TPG did not become aware of the error in the system upgrade until 20 September 2011. Complaints from end users who had difficulties calling a number were ordinarily passed on to Mr Vernon. Prior to 20 September 2011, Mr Vernon was not told about any complaints that calls made by end users to the emergency call service were not being carried. 17 The software programming error was discovered by TPG on 20 September 2011 in what were extremely unfortunate circumstances. 18 TPG had supplied a home phone service to a married couple (who need not be named) from 28 January 2011. In accordance with the terms of supply set out earlier at [7], it was a term of the supply of the service that the couple maintain a credit balance of at least $5. On 12 September 2011, TPG sent an email to the husband informing him that TPG had attempted to debit his credit card and that the debit had been declined by his bank. A further email was sent the following day indicating the account was $5 in arrears. The couple were overseas at the time and did not read the emails until they returned. Their credit card had been suspended by their bank due to suspected fraudulent activity. 19 On 19 September 2011 at 4:09 pm, TPG 'suspended' the home phone service of the couple. The result was that any calls made from the couple's TPG home phone service would not be connected. 20 On the morning of 20 September 2011, the husband called TPG from his mobile phone to discuss the couple's inability to make calls from their TPG home phone service. Due to poor reception on the mobile phone, the TPG representative called the husband on the couple's TPG home phone service. Shortly thereafter, the husband became very unwell. His wife attempted to call the emergency call service from the TPG home phone service and heard a recorded message saying that the call could not be connected. She then tried to call the emergency call service from her mobile phone but due to a lack of mobile service coverage inside the house, the call was unsuccessful. The wife then moved outside and approximately a minute after she had initially dialled 000 from the TPG home phone service, she was connected to the emergency call service from her mobile phone and an ambulance was dispatched, although not as a priority. Shortly thereafter, the husband suffered a heart attack. 21 The wife's sister, who was also at the couple's home at the time, made a further call to the emergency call service about five minutes after the first successful mobile call was made. This call too had to be made from outside the house due to a lack of mobile service coverage inside the house. 22 The inability to make calls from inside the couple's house caused a number of difficulties, namely: information about the husband's condition could not be relayed to the emergency call service call-taker; information and instructions from the call-taker could not be relayed to those persons who were with the husband; and the wife's sister, who was some distance away from the house when she called the emergency call service, did not know the street address of the house. 23 An ambulance arrived 27 minutes after the first successful call to 000 was made and the husband was taken to the hospital. On 24 September 2011, he passed away. 24 After becoming aware on 20 September 2011 of its failure to provide access to the emergency call service, TPG immediately took steps to rectify the failure and corrective action was progressively rolled out and tested across the TPG systems beginning on the same day. 25 It is agreed between the parties that between 15 March and 21 September 2011, the customers of 5,979 TPG home phone services failed to maintain an appropriate credit balance and, as a result of the error in the TPG systems upgrade, the end users of these services did not have access to the 000 emergency call service during the periods for which their service was 'suspended' until the required credit balance was restored. 26 In addition, during that same period, 193 calls were made to the emergency call service from 100 of the 5,979 'suspended' TPG home phone services. None of those calls were connected.