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Created page with "'''TTY''' ('''Teletypewriter''') is a communication system used in Payphone Tag that allows text to be transmitted over telephone lines using encoded audio signals. In the context of Payphone Tag, TTY is primarily used through certain Telstra Smart Payphone units that include a physical slide-out keyboard. == Usage in Payphone Tag == When a TTY-capable payphone is captured, the Operator may initiate TTY mode after the login sequence. If the payphone support..." |
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In the context of Payphone Tag, TTY is primarily used through certain [[Telstra Smart Payphone]] units that include a physical slide-out keyboard. | In the context of Payphone Tag, TTY is primarily used through certain [[Telstra Smart Payphone]] units that include a physical slide-out keyboard. | ||
A full list of all TTY capable payphones according to Telstra can be found at [[:Category:TTY-equipped payphones]]. | |||
== Usage in Payphone Tag == | == Usage in Payphone Tag == | ||
When a TTY-capable payphone is captured, the [[Operator]] may initiate TTY mode after the login sequence. If the payphone supports it, the TTY keyboard can slide out, allowing the agent to type a message. | When a TTY-capable payphone is captured, the [[Operator]] may initiate TTY mode after the login sequence. If the payphone supports it, the TTY keyboard can slide out, allowing the agent to type a message. | ||
The typed message is transmitted as an '''ITA2 (Baudot) encoded signal''' over the phone line. The game backend decodes this signal and posts the message in real time to the Discord | The typed message is transmitted as an '''ITA2 (Baudot) encoded signal''' over the phone line. The game backend decodes this signal and posts the message in real time to the [[Discord Server]]’s <code>#tty</code> channel. | ||
== Forcing TTY mode == | == Forcing TTY mode == | ||
Agents can also manually trigger TTY mode on most payphones by: | Agents can also manually trigger TTY mode on most payphones by: | ||
* Entering <code>*</code> after | * Entering <code>*</code> after login is complete (the operator does not currently support entering it immediately after the PIN.) | ||
* Playing a pre-encoded ITA2 audio file into the handset | * Playing a pre-encoded ITA2 audio file into the handset or using a portable TTY device to generate encoded signals live. | ||
This allows messages to be injected into the system without requiring a physical TTY keyboard. | This allows messages to be injected into the system without requiring a physical TTY keyboard. | ||
| Line 17: | Line 19: | ||
== Technical details == | == Technical details == | ||
* Encoding: ITA2 (Baudot code) | * Encoding: ITA2 (Baudot code) | ||
* Baud rate: 50 baud | |||
* Mark frequency: 1410 Hz | |||
* Stop frequency: 1820 Hz | |||
* Stop bits: 1.5 | |||
* Transmission: Audio tones over phone line | * Transmission: Audio tones over phone line | ||
* Output: Decoded and displayed in Discord | * Output: Decoded and displayed in Discord | ||
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== Real-world context == | == Real-world context == | ||
TTY systems were historically used to assist deaf or hard-of-hearing users in communicating via telephone networks. | TTY systems were historically used to assist deaf or hard-of-hearing users in communicating via telephone networks, among other uses. | ||
== See also == | == See also == | ||
* [[Payphone Tag Discord Server]] | * [[Discord Server|Payphone Tag Discord Server]] | ||
* [[Telstra Smart Payphone]] | * [[Telstra Smart Payphone]] | ||
* [[Gameplay]] | * [[Gameplay]] | ||
Latest revision as of 05:20, 4 June 2026
TTY (Teletypewriter) is a communication system used in Payphone Tag that allows text to be transmitted over telephone lines using encoded audio signals.
In the context of Payphone Tag, TTY is primarily used through certain Telstra Smart Payphone units that include a physical slide-out keyboard.
A full list of all TTY capable payphones according to Telstra can be found at Category:TTY-equipped payphones.
Usage in Payphone Tag
When a TTY-capable payphone is captured, the Operator may initiate TTY mode after the login sequence. If the payphone supports it, the TTY keyboard can slide out, allowing the agent to type a message.
The typed message is transmitted as an ITA2 (Baudot) encoded signal over the phone line. The game backend decodes this signal and posts the message in real time to the Discord Server’s #tty channel.
Forcing TTY mode
Agents can also manually trigger TTY mode on most payphones by:
- Entering
*after login is complete (the operator does not currently support entering it immediately after the PIN.) - Playing a pre-encoded ITA2 audio file into the handset or using a portable TTY device to generate encoded signals live.
This allows messages to be injected into the system without requiring a physical TTY keyboard.
Technical details
- Encoding: ITA2 (Baudot code)
- Baud rate: 50 baud
- Mark frequency: 1410 Hz
- Stop frequency: 1820 Hz
- Stop bits: 1.5
- Transmission: Audio tones over phone line
- Output: Decoded and displayed in Discord
Limitations
Not all TTY-enabled payphones function correctly. Many units connected via cellular (4G) networks have been reported to fail when attempting TTY communication.
Real-world context
TTY systems were historically used to assist deaf or hard-of-hearing users in communicating via telephone networks, among other uses.