HollowArrow: info about portable TTY devices, more technical details (frequency, baudrate), historical context

2026-05-04T05:43:54Z

info about portable TTY devices, more technical details (frequency, baudrate), historical context

← Older revision		Revision as of 05:43, 4 May 2026
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	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 ~~server’s~~ <code>#tty</code> channel.		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 their PIN		* Entering <code>*</code> after their 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.
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	== Technical details ==		== Technical details ==
	* Encoding: ITA2 (Baudot code)		* Encoding: ITA2 (Baudot code)
			* Baud rate: 50 baud
			* Mark frequency: 1410 Hz
			* Stop frequency: 1820 Hz
	* 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]]

Kevin: 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..."

2026-05-04T01:34:17Z

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..."

New page

'''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 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 <code>#tty</code> channel.

== Forcing TTY mode ==
Agents can also manually trigger TTY mode on most payphones by:
* Entering <code>*</code> after their PIN
* Playing a pre-encoded ITA2 audio file into the handset

This allows messages to be injected into the system without requiring a physical TTY keyboard.

== Technical details ==
* Encoding: ITA2 (Baudot code)
* 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.

== See also ==
* [[Payphone Tag Discord Server]]
* [[Telstra Smart Payphone]]
* [[Gameplay]]

TTY - Revision history

HollowArrow: info about portable TTY devices, more technical details (frequency, baudrate), historical context