RTT in EIA/TIA standards
EIA/TIA Accessibility specific Documents
| Standard | Full name of standard | Explanation | Type | Status |
|---|---|---|---|---|
| TIA/EIA 825a | A Frequency Shift Keyed Modem for use on the Public Switched Telephone Network | The standard for TTY signals, which permitted mainstream industry to design for compatibility with TTY as technologies moved to digital. | Modem transport | Approved |
| TIA 1001 | Standards for text over IP (TIA 1001) transit gateway | U.S. effort to develop standard methods for carrying Baudot over IP networks, using voice band data and gateway approaches. | Gateway | Approved |
| TIA- 504-A | Telecommunications-Telephone Terminal Equipment-Magnetic Field and Acoustic Gain Requirements for Headset Telephones Intended for Use by the Hard of Hearing | Requirement | Approved | |
| ANSI/TIA-968-A | Telecommunications - Telephone Terminal Equipment - Technical Requirements for Connection of Terminal Equipment to the Telephone Network | Requirement | Approved | |
|
TR 45
TSB-121 |
2.5 mm Audio Interface For Mobile Wireless Handsets - Text Telephones (TTY) | Connector standard for wireless telephones and TTYs | Physical | Approved |
|
C.63/ANSI
ANSI C.63.19 |
American National Standard for Methods of Measurement of Compatibility between Wireless Communication Devices and Hearing Aids | Measurements of wireless telephone emissions and hearing aid immunity, with predicted performance based on measures. (Now in use in an FCC order) | Interference | Approved |
| TIA IS-823 | TTY/TDD Extension to TIA/EIA 136-410 Enhanced Full Rate Speech Codec | Transport | Approved | |
| TIA -IS-840 | Minimum Performance Standards for Text Telephone Signal Detector and Text Telephone Signal Regenerator | Requirements | Approved | |
| TIA TSB-121 | 2.5 mm Audio Interface For Mobile Wireless Handsets - Text Telephones (TTY) | Physical | Approved |
EIA/TIA General documents with accessibility interest
| Standard | Full Name of Standard | Explanation | Type | Status |
|---|---|---|---|---|
| TIA IS-127-2 | Enhanced Variable Rate Codec, Speech Service Option 3 for Wideband Spread Spectrum Digital Systems - Addendum 2 | Speech codec | Approved | |
| TIA IS-707-A-2 | Data Services Options for Spread Spectrum Systems - Radio Link Protocol Type 3 - Addendum No. 2 | Approved | ||
| TIA IS-733-1 | High Rate Speech Service Option 17 for Wideband Spread Spectrum Communications Systems | Approved | ||
| TIA IS-789A | Electrical Specification for the Portable Phone to Vehicle Interface | Physical | Approved | |
| TIA/EIA-688 | DTE/DCE Interface For Digital Cellular Equipment | Physical | Approved | |
| T1.209-2003 | American National Standard for Operations Administration and Maintenance and Provisioning (OAM&) - Network Tones and Announcements | Provides and industry standard way for network routing messages to be conveyed in TTY in addition to voice. | Approved |