Sinch Voice API: Choosing between v1 and v2
For all new projects, please use Voice API v2. This is especially important for projects involving:

- AI capabilities like Streams and Voice Relay
- Voice campaigns like Batch calling


You should only use the older Voice API v1 if one of the following is a strict requirement:

- The project must be in General Availability (GA).
- The project requires In-App voice or Conferencing (until these features are available in v2).


# Release Notes for Voice API

See how the Sinch Voice API is evolving and find out about new features and bug fixes.

## 2022-10-06

- Added Malay (Malaysia) to the supported text-to-speech voices.


## 2022-09-28

- Added the ability to use [DTMF signals](/docs/voice/api-reference/conference-dtmf) with conferences.


## 2022-09-16

- Added the following languages and locales to the supported text-to-speech voices:
  - Chinese (Cantonese, Traditional)
  - Filipino (Philippines)
  - Indonesian (Indonesia)
  - Thai (Thailand)
  - Uzbek (Uzbekistan)
  - Vietnamese (Vietnam)