| Criteria | Conformance Level | Remarks and Explanations |
|---|---|---|
| not include two-way voice communication. | ||
| 6.2 Real-time text (RTT) functionality | Heading cell – no response required | Heading cell – no response required |
| 6.2.1.1 RTT communication | Not applicable | None |
| 6.2.1.2 Concurrent voice and text | Not applicable | None |
| 6.2.2.1 Visually distinguishable display | Not applicable | None |
| 6.2.2.2 Programmatically determinable send and receive direction | Not applicable | None |
| 6.2.2.3 Speaker identification | Not applicable | None |
| 6.2.2.4 Visual indicator of Audio with RTT | Not applicable | None |
| 6.2.3 Interoperability | Not applicable | None |
| 6.2.4 RTT responsiveness | Not applicable | None |
| 6.3 Caller ID | Not applicable | None |
| 6.4 Alternatives to voice-based services | Not applicable | None |
| 6.5 Video communication | Heading cell – no response required | Heading cell – no response required |
| 6.5.1 General (informative) | Heading cell – no response required | Heading cell – no response required |
| 6.5.2 Resolution | Not applicable | None |