Telstra Smart Payphone

The Telstra Smart Payphone is the current standard public telephone used by Telstra in Australia. It replaced earlier Telecom Australia and Telstra public payphone types and is the model most commonly encountered by Payphonetag players.

Telstra describes the Smart Payphone as its latest public payphone. Published features include SMS sending to Australian mobiles, a large back-lit display showing the number dialled and remaining credit, visual or audible low-credit and end-of-call warnings, a hearing-aid coupler, four-step volume control, and redial.

Although still generally called a payphone, ordinary domestic use of Telstra public phones is now free. Telstra states that standard national and mobile calls are free from all Telstra payphones, and that from 8 October 2021 payphones stopped accepting coins. Calls to international and other charged destinations require a Telstra Phonecard or other third-party calling card.

History

Public telephones have been part of the Australian telephone network since the 1880s. The Telstra Smart Payphone belongs to the late-1990s generation of electronic public telephones designed around smartcard payment, display-based prompting, programmable tariffs and automatic fault reporting.

Contemporary press coverage in The Sydney Morning Herald shows Telstra's smart-card public telephone technology was being covered publicly during the late-1990s rollout period.

Collector sources identify the Australian Smart Payphone as part of the Amper-developed MPP or Multi Purpose Payphone platform, with early units made in Spain and adapted for Australian weather and vandal-resistance. The model is commonly said to have been introduced in 1997 to replace the CT3 series, with early deployments in Adelaide, Perth, Brisbane and Sydney. The current manufacturer appears to be Infopyme Comunicaciones, a Spanish public-telephony manufacturer that describes itself as designing, manufacturing, assembling and repairing public telephones and spare parts for operators around the world.

The Telstra Smart Payphone appears to be a Telstra-specific variant of Infopyme's TMI public-payphone platform, or of the same Amper/Siemens-Elasa/Infopyme product lineage. This identification is based on manufacturer lineage and visual/collector comparison rather than a Telstra-published model sheet, so it should be treated as probable rather than formally confirmed.

Early units were reportedly modified or retrofitted after problems with durability, weather exposure and vandalism. Later Australian examples have heavier stainless-steel casing and improved coin-security hardware on coin-capable variants.

At some point in the mid-2000s, the Smart Payphone firmware and/or service platform was updated to allow SMS sending. Telstra's current payphone terms state that some public payphones can send SMS messages to compatible Australian mobile and fixed services, although payphones cannot receive SMS replies.

In 2019 Telstra enabled incoming calls on many public payphones. Telstra later stated that publicly accessible payphones could receive incoming telephone calls, and Telstra's current public-payphone terms state that some payphones allow incoming calls at no charge.

In August 2021 Telstra made local calls, national calls to standard fixed-line numbers and calls to standard Australian mobiles free from public payphones. Coin acceptance ended from 8 October 2021.

With the rollout of the NBN and the progressive decommissioning of copper-based POTS services, many Smart Payphones in metropolitan areas have been converted to use Telstra's cellular network rather than a traditional copper telephone line. In the field, these can often be identified by the telephone number shown on the payphone's [[cabinet]] label: cellular-connected payphones commonly have numbers beginning with 04 rather than a fixed-line area code.

From 2022, Telstra began converting enabled payphones into free Wi-Fi hotspots. Telstra stated that free Wi-Fi became available at selected enabled payphones from 25 August 2022, and that around 3,000 Wi-Fi-enabled payphones had been upgraded by 2023.

Variants

Phonecard-only Smart Payphone

A less common version is the Phonecard-only or card-only Smart Payphone. These units do not have a usable coin mechanism and rely on the Telstra Phonecard or a compatible calling card for charged destinations. Standard Australian fixed-line and mobile calls are free.

Coin and Phonecard Smart Payphone

The most common Smart Payphone variant still encountered in the field is the coin and Phonecard model. These units were originally fitted with both a coin mechanism and a Telstra Phonecard slot. Collector sources state that coin-capable units accepted Australian 5c, 10c, 20c, 50c, $1 and $2 coins.

After Telstra made standard Australian national and mobile calls free in 2021, coin acceptance was later disabled across Telstra public payphones. Telstra states that payphones stopped accepting coins from 8 October 2021. As a result, many coin/Phonecard Smart Payphones still physically have a coin slot, coin return and related hardware, but the coin mechanism should be treated as disabled rather than usable. The Phonecard slot may still be usable for charged destinations and Phonecard-specific functions.

TTY Smart Payphone

Some Telstra payphones were modified with a TTY or teletypewriter facility for people who are deaf or have a communication impairment. Telstra states that around 100 payphones have been modified to include a TTY facility. TTY-equipped payphones can be found through Telstra's Payphone Locator by searching for the Teletypewriter (TTY) feature.

TTY units are visually distinct and are of particular interest to Payphonetag players. The TTY keyboard used with Telstra payphones is an Ultratec Pay Phone TDD keyboard. The keyboard slides out when TTY tones are detected over the phone line. Many units appear to have seen little regular use in recent years, so players should not assume that the TTY attachment is working unless tested.

TTY payphones that have been converted to use Telstra's 4G/cellular network, usually identifiable by an 04 number on the [[cabinet]] label, are currently reported not to work correctly with TTY. Telstra is aware of the issue and has stated that it is working on a solution.

Wi-Fi-enabled cabinets

Some Smart Payphones are installed in [[cabinet]]s or surrounds that also provide free Telstra Wi-Fi. Telstra says users can connect by selecting the Free Telstra Wi-Fi network and accepting the portal terms. Wi-Fi-enabled sites may have additional branding, antennas or [[cabinet]] modifications.

Field observations suggest that Telstra Air / Free Telstra Wi-Fi-enabled payphones often use conventional domestic-style Telstra Smart Modems installed within the booth's roof hat or inside a Telstra Air cube enclosure mounted above the booth roof.

Telstra Smart Phonecard

The Telstra Smart Phonecard is the stored-value contact smartcard used by the Telstra Smart Payphone. The modern Telstra Phonecard is sold as a pre-paid card for international, mobile satellite and other chargeable calls from Telstra payphones. Telstra lists current denominations of $5, $10 and $20, sold at selected Telstra Stores and retail outlets.

At launch, Telstra distinguished the new Smart Phonecard from the older Telstra Phonecard. A contemporary Telstra newspaper advertisement said the new card used Smart chip technology and was identified by a red arrow. The advertisement stated that Smart Phonecards would only operate in new Telstra Public Payphones displaying the same red arrow, while older green-arrow Phonecards would only operate in older Telstra payphones.

Technical details

The Telstra Smart Phonecard is not a PIN card and is not a general-purpose processor smartcard in the same sense as a SIM card or banking card. It is a synchronous contact memory/counter card. Telstra's current Phonecard information states that no PIN or access number is required, and that the card is used simply by inserting it into a Telstra payphone and dialling.

The chip used in the Telstra Smart Phonecard has been identified by hobbyist and collector testing as the Siemens/Infineon SLE 4436 family. The SLE 4436/36E was specifically designed for prepaid telephone-card applications. Manufacturer information describes it as containing 221 bits of EEPROM memory, 16 bits of ROM, a control/security unit, and a computing unit for chip authentication.

The SLE 4436 memory layout includes a counter, identification data such as serial number and expiry date, and data areas. This fits the practical behaviour of a Telstra Smart Phonecard: the payphone can read the card identity and remaining value, decrement the stored credit during chargeable calls, and also store small user-programmed data such as an autodial number.

This one-way memory behaviour also explains why the Telstra Smart Payphone warns that an autodial number can only be programmed into a Phonecard once. Programming the autodial field consumes the relevant writable bits on the card. Because the card cannot erase those bits back to their original state, the payphone cannot safely offer repeated attempts or later edits in the way a normal rewritable memory card could.

The card's value storage should be understood as a one-way electronic counter rather than a rewritable balance field. In normal card operation, memory is not erased before writing, so bits can only be programmed from binary 1 to binary 0. In practical terms, once a counter bit or value stage has been consumed, ordinary payphone operations cannot turn it back into unused credit. This is more technically accurate than saying the chip is literally blown like a fuse, but the effect is similar: the card is designed for controlled devaluation, not recharging or reuse.

The SLE 4436 also supports write modes intended for telephone-card counter operation, including write with carry and backup-protected write modes. The backup mechanism is intended to reduce value corruption if the card is removed during a counter update. Manufacturer information also describes a challenge-response authentication unit, used so the terminal can verify that the card is genuine rather than a simple unprotected memory device.

Telstra's Phonecard terms state that the card's stored value cannot be increased and that the card ends when the stored value reaches zero or when the end date shown on the card is reached. This matches the one-way counter design: a spent Smart Phonecard is not normally reset or topped up.

Expiry-date field note

Telstra's Phonecard terms state that Phonecards end on the date shown on the back of the card or when the stored value reaches zero, and that Telstra does not promise that a card will work after its end date.

Payphonetag players have observed that some recently issued Phonecards with a 2025 expiry date continue to function after the printed expiry date. Telstra Shop staff at Telstra's flagship Sydney store in Pitt Street Mall have also reportedly advised purchasers that these cards will continue to work after expiry. This should be treated as staff advice and field observation only, not a formal Telstra guarantee.

Anyone buying an expired or near-expired Phonecard should ask for a receipt and test the card as soon as practical after purchase. If the card does not work, the receipt will be useful when returning to the store or seeking assistance.

Contact oxidation

Because Phonecard slots have seen little use for many years, the contacts in the reader may be dirty or oxidised. If a known-good Phonecard is not read immediately, gently insert and remove the card several times. Do not force the card, insert foreign objects, spray cleaners into the slot, or damage the phone.

Telstra also promoted the Smart Phonecard as a possible stored-value payment system beyond payphones, stating that Smart Phonecards would soon be accepted in vending machines for snacks and drinks. The extent of any later vending-machine rollout is unclear.

Call charges and tariffs

For ordinary Payphonetag use, standard Australian fixed-line and mobile calls should be treated as free, consistent with Telstra's current consumer advice. Since Telstra stopped accepting coins in 2021, remaining chargeable calls require a Telstra Phonecard or other supported calling card.

The current practical charging position is:

Call type	Current status
Standard Australian fixed-line calls, including local and national landline calls	Free
Standard Australian mobile calls	Free
Domestic satellite and special mobile satellite services	Chargeable; Phonecard or supported calling card required
International calls	Chargeable; Phonecard or supported calling card required
Domestic SMS from a public payphone, where supported	Free

Telstra's public-payphone customer terms still publish tariff details for chargeable services, including domestic satellite calls and international calls. International calls are charged by destination in seconds per 50c. Examples from Telstra's current table include 600 seconds per 50c to the United States, Canada, Malaysia, Singapore, Hong Kong, India, Thailand, Bangladesh and South Korea; 120 seconds per 50c to the United Kingdom, France, Greece, Japan, Indonesia and the Philippines; and 60 seconds per 50c to New Zealand, Germany, Italy and Ireland.

Telstra's terms also state that some public payphones can send an SMS of up to 136 characters to a compatible Australian mobile or fixed service, but that payphones cannot receive or reply to SMS, cannot send SMS to 13x, 13xx, 180x or international services, and that SMS from a payphone is not suitable for emergencies.

Payphonetag tips

Reporting faults

The official Telstra payphone fault line is 180 22 44. Telstra states that this is a free call from Telstra payphones and operates 24/7. Useful details include the location, the payphone number or [[cabinet]] ID, a description of the fault, and details of any physical damage.

In practice, Payphonetag players have found that the quickest way to submit ordinary non-urgent fault reports is usually Snap Send Solve. Telstra's damaged-equipment page directs non-urgent damage reports through Snap Send Solve, and Snap Send Solve says it can send Telstra equipment reports directly to Telstra.

As of current Payphonetag field reports, the best Snap Send Solve category to use is usually Telstra – Phonebox Graffiti, even if the problem is not graffiti. This appears to route the report to a Telstra staff member or Telstra workflow where the appropriate payphone fault can be logged. Include a clear description such as handset missing, no dial tone, screen blank, keypad not responding, card reader not reading cards, TTY not working, or line noisy.

For faults that create an immediate safety risk, such as exposed wiring, overhead cable damage, injury or damage to property, follow Telstra's urgent-damage advice instead: call 13 22 03 and say report damages.

Incoming calls and caller ID

Almost all Telstra Smart Payphones can receive incoming calls. The payphone will usually ring and can be answered by lifting the handset. Payphones also normally display outgoing caller ID when making a call, which is useful for confirming the number assigned to a payphone and matching it to its cabinet label.

There are exceptions at sensitive locations, such as mental health crisis wards, prisons, rehabilitation facilities and similar controlled environments. At these sites, outgoing caller ID may be blocked and appear as a private number. Incoming calls may still wake the phone, but the display may not show an incoming-call message. If the handset is lifted, the phone may display SERVICE NOT AVAILABLE - HANG UP rather than connecting the incoming call.

A notable exception is outgoing SMS. Even where outgoing voice caller ID appears to be blocked, outgoing SMS messages may still display the payphone's caller ID.

Follow On button

The Follow On button was originally used to allow remaining coin credit to be used for an additional call without the user having to insert more coins. Since coins are no longer accepted and standard Australian calls are free, the button has little practical purpose for payment. It can still be useful for quickly starting another call without waiting for the payphone to go through its full reset cycle.

Using a TTY payphone with Payphonetag

A TTY-equipped Telstra Smart Payphone can be triggered by calling the Payphonetag number. After entering the required PIN, Payphonetag sends the modem/TTY tones needed to activate the Ultratec Pay Phone TDD keyboard. Once the keyboard slides out, type a message using the TTY keyboard. The message will be decoded and displayed in the #tty channel of the Payphonetag Discord.

This is useful for testing whether the TTY attachment is still functional. If the keyboard does not slide out, the TTY unit, phone line, handset path, detection circuit or Payphonetag-side call path may be faulty. If the payphone has an 04 number on its [[cabinet]] label, it may be one of the 4G-converted TTY payphones currently affected by Telstra's known TTY issue.

Dialling when the keypad is not working properly

If the numeric keypad is damaged but the card key and card reader still work, a Telstra Phonecard can sometimes be used to autodial a stored number.

1. Find another Smart Payphone with a working keypad and working Phonecard reader.
2. Insert the Telstra Phonecard.
3. Press OK to enter the menu.
4. Select Option 3 for the Phonecard autodial/programming function.
5. Program the target number into the Phonecard.
6. At the payphone with the damaged keypad, insert the programmed Phonecard.
7. Press the card key to autodial the stored number. The card key is the first key from the top on the left-most row of the keypad.

This is useful where the keypad has failed or certain digits do not register. It will not help if the hookswitch, handset, line, display, card reader or card key is faulty.

Entering a Payphonetag PIN with a tone dialling app

If the payphone keypad is partly or completely broken, it may still be possible to call Payphonetag and enter a PIN using DTMF tones generated by a mobile phone.

First, place the call to 07 LOADTALK — 07 5623 8255 — using a Phonecard autodial entry, or by dialling normally if the broken key is not needed for the Payphonetag number. Once the call is connected, use a tone dialling app on a mobile phone to play the PIN digits into the payphone handset microphone.

The mobile phone volume must be adjusted carefully. If it is too loud, the tones may distort and fail to decode; if it is too quiet, the payphone microphone may not pick them up reliably. Hold the mobile phone speaker near the payphone mouthpiece and listen through the payphone earpiece while adjusting the volume to find the cleanest level.

Finding a Telstra Phonecard

Telstra Shop staff may not know what a Telstra Phonecard is, especially because they are now rarely requested. When asking for one, avoid only saying calling card, as staff may think of mobile recharge vouchers, international PIN cards or discontinued products.

Useful wording:

I’m after a Telstra Phonecard calling card for use in Telstra payphones. Telstra’s website lists it under Calling cards and says it is available in $5, $10 and $20 denominations at selected Telstra Stores and retail outlets.

It may help to show staff Telstra's Calling cards page, which states that Telstra Phonecards are used for international, mobile satellite and other chargeable calls from Telstra payphones. Ask whether the store can check old stock, the accessories drawer, or internal product listings.

Testing the Phonecard slot

A working Phonecard should cause the payphone to display the remaining stored value when inserted. If it does not:

• check that the card is inserted the correct way around;
• try several gentle insertion/removal cycles;
• try the same card in another payphone;
• try another known-good Phonecard if available;
• remember that the card slot, card reader or payphone line may be faulty.

Related payphones in other countries

The Telstra Smart Payphone was not a completely unique Australian concept. Similar or related Amper/Siemens-Elasa/Infopyme public telephones appeared in several other countries, sometimes with different housings, tariffing and operator-specific software.

Germany

Germany had TELE-RUF Smart Payphones, a privately operated late-1990s/early-2000s smart-payphone system. Collector documentation identifies the TELE-RUF units as using hardware based on the Amper-developed MPP platform also used in Australia's Telstra CT-10/Smart Payphone.

These German phones advertised cheap calls and mobile-era digital services such as SMS, ringtone downloads and digital content delivery.

Croatia

Croatia has used public payphones operated by Hrvatski Telekom. Some older Croatian card payphones have been visually identified by collectors as being part of the same or a closely related Siemens/Amper platform family, but this should be treated cautiously unless supported by a manufacturer plate or primary source.

Hrvatski Telekom later modernised some public payphone sites into digital smart-phone booths. In 2017 Hrvatski Telekom and Vendotel installed ten smart payphones in Zadar with free Wi-Fi, ticketing, voucher sales and other services. In 2018 Hrvatski Telekom and Go2Digital announced the replacement of existing public payphones with digital payphones offering Wi-Fi, wireless charging, sensors, navigation information, digital advertising and an SOS key.

Cuba

Cuba's ETECSA public telephone network has used several public telephone technologies, including Siemens-Elasa and Amper/Siemens-Elasa equipment. Cuban service-quality material has listed public-telephone technologies including Siemens Elasa and Amper coin and card telephone equipment.

Cuban public phones remained important well into the smartphone era because public-phone calls were much cheaper than mobile calls. A 2017 report stated that Cuba had 59,818 public phones at the end of the previous year, including 8,588 coin-operated phones.

Russia

Russia, particularly Moscow's MGTS public-payphone network, used Amper and Siemens-Elasa equipment during the transition from token-operated phones to card and coin-card public phones. Russian metrology-register material lists Amper-Siemens-Elasa card-payphone tariff equipment, including TPM-PC/S and TPM-MM/P models, manufactured in Spain.

Moscow also trialled Siemens Elasa internet payphones in 2003, with reports stating that MGTS planned to install a small trial batch able to provide voice calls, internet access, email, text messages and multimedia messages.