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  1. Functional Accessibility Requirements
  2. 6. ICT with two way voice communication
  3. 6.2: Real-Time Text (RTT) functionality
  4. 6.2.2. Display of Real-time Text
  5. 6.2.2.2. Programmatically determinable send and receive direction

6.2.2.2. Programmatically determinable send and receive direction

Where ICT has RTT send and receive capabilities, the send/receive direction of transmitted text shall be programmatically determinable, unless the RTT has closed functionality.

Notes

The intent of clause 6.2.2.2 is to enable screen readers to be able to distinguish between incoming text and outgoing text when used with RTT functionality.

Testing methods

Type of compliance Inspection
Pre-conditions
  1. The ICT under test has RTT send and receive capabilities.
  2. The RTT is not a closed functionality
  3. A "reference" RTT-capable terminal using mechanisms supported by the ICT network is connected at the other end of an ICT network to the ICT under test.
Procedure
  1. The ICT under test is connected to the ICT network terminated by the "reference" terminal.
  2. The different elements of the ICT are in an operational status (the connection is active and the terminals are in the relevant RTT mode) and the two terminals are communicating to each other.
  3. A Short text sequence is sent by the ICT terminal under test.
  4. A Short text sequence is sent by the "reference" terminal.
  5. Check that the send/receive direction of transmitted text is programmatically determinable.
Result  Pass: Check 5 is true
 Fail: Check 5 is false

NOTE:   A "reference" terminal is a terminal having RTT send and receive capabilities that uses the RTT mechanisms supported by the ICT network. This "reference" terminal is the responsibility of the test laboratory.

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