| Name | Description |
|---|---|
| AudioFormat | Audio format for recordings. |
| Channel | Channel values for use with Call, Message, etc. |
| Date | Date formats for Tropo TTS readback. |
| Duration | Duration formats for Tropo TTS readback. |
| Event | Event names for use with Tropo On object. |
| Method | HTTP methods for posting recordings. |
| Network | Network values for use with Call, Message, etc. |
| SayAs | Say as format for Tropo TTS readback. |
| Voice | TTS voice options. |