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This guide explains in detail each Dialplan application and provides practical examples and use cases.

Updated: September 2022January 2023

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How to use TTS in Dialplan:

• It is necessary to first set the language using “Set” application
• if required, you can change the default voice parameter for TTS message. Add "Set" application and use channel variable "TEXTTOSPEECH_VOICE" indicating the new voice parameter. Supported voices list can be found in WMS -> Sounds (secondary top menu)-> Text-to-speech page. Note, that the language of the voice parameter should match the language selected in "Set" application
• Write a text using “Play sound” / “Play sound and wait for digits” applications. In case you need to insert a pause between words/ phrases, use a variable <break time="1s"/>, where the value "1s" can be changed to any number of seconds
• To learn more about variables, read Smart Dialplan Guide - use of Custom Applications
• You can jump to another Dialplan procedure based on TTS result: use “Jump to if” application with Condition "${TTSSTATUS}"!="SUCCESS" ("UNDEFINED"/"FAILURE")

Note, that this message will not be saved on the PBX and will be generated dynamically upon the execution of this Dialplan application.

Example:

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Notes:

• The support starts from WMS Beta 6.01.20220929.2.
• Besides configuring Speech to Text in Dialplan, you can use a script that saves all recorded data  into one file and passes to a database. See the document for details: How to Set Up Wildix Speech to Text