IVR menu
The IVR menu block in FlowBuilder enables you to create interactive voice response menus based on numeric input. If no valid input is received, the call will be ended.
TTS character limit
When using regular Text-To-Speech (TTS), the prompt is limited to 500 characters. If your prompt exceeds 500 characters, only the first 500 characters will be played. It's important to keep within this limit to ensure that your entire message is conveyed effectively during the call.
SSML character limit
When using SSML (Speech Synthesis Markup Language), there is a limit of 1000 characters. If your SSML prompt exceeds this limit, the prompt will not be played. This is because truncating the prompt to fit within the 1000-character limit could potentially break the SSML syntax and render the prompt unusable.
Voicemail limitation - Outbound
When voicemail has been detected and voicemail-response has been set to Restart, the call will end once the callflow arrive at this block, because this requires input from the callee which not possible when voicemail has been detected.
Properties
| Option | Description | Required |
|---|---|---|
| Introduction greeting | TTS (Text-to-Speech) or audio file played once when the block is activated. | No |
| Choices description | TTS or audio file that describes the menu choices available to the caller. This message is repeated when an invalid option is pressed or when the timeout occurs. | Yes |
| Invalid response sound | TTS or audio file played when an invalid option is pressed or when the timeout occurs. | No |
| Exit sound | TTS or audio file played when the maximum number of failures is reached. | No |
| Timeout in ms | Maximum time in milliseconds to wait for the caller to respond. | Yes |
| Maximum amount of failures | Maximum number of times the caller can enter an invalid value or reach the timeout before the call is ended. | Yes |
Options
| Option | Description | Required |
|---|---|---|
| DTMF Number | The DTMF (Dual-tone Multi-frequency) input required for the respective output. Valid inputs: 0-9, #, or *. | Yes |
| Description | Optional description of the output for visual purposes in the FlowBuilder app. | No |
Updated about 2 months ago