---
title: "Changes to Dial"
method: POST
path: "/calls"
---

# Changes to Dial

`POST /calls`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 8 of 47 revisions.

- **2026-06-16** `e990c478a58a` — 2 info
- **2026-06-05** `8a8c40f458c5` — 1 breaking, 1 info
- **2026-05-27** `996660490005` — 1 info
- **2026-05-22** `622f9e7b1730` — 1 info
- **2026-05-18** `c260e29f1496` — 3 info
- **2026-05-14** `50870cc05614` — 1 breaking, 4 info
- **2026-05-14** `a144ff96b4ac` — 1 breaking, 1 info
- **2026-05-08** `30cb1ddce91b` — 1 breaking, 16 info

## Changes

- **2026-06-16** `e990c478a58a` — 2 info
  - added the new optional request property `conversation_relay_config/languages/items/voice_settings/oneOf[subschema #8: Inworld Voice Settings]/delivery_mode`
  - added the new optional request property `conversation_relay_config/voice_settings/oneOf[subschema #8: Inworld Voice Settings]/delivery_mode`
- **2026-06-05** `8a8c40f458c5` — 1 breaking, 1 info
  - removed `subschema #1: targets_list` from the `assistant/tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` request property `oneOf` list
  - added `subschema #1` to the `assistant/tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` request property `oneOf` list
- **2026-05-27** `996660490005` — 1 info
  - added the new optional request property `conversation_relay_config`
- **2026-05-22** `622f9e7b1730` — 1 info
  - added the new optional request property `send_digits_on_answer`
- **2026-05-18** `c260e29f1496` — 3 info
  - added `Soniox` discriminator mapping keys to the `transcription_config/transcription_engine_config` request property
  - added the new `Soniox` enum value to the request property `transcription_config/transcription_engine`
  - added `#/components/schemas/TranscriptionEngineSonioxConfig` to the `transcription_config/transcription_engine_config` request property `oneOf` list
- **2026-05-14** `50870cc05614` — 1 breaking, 4 info
  - removed `subschema #1` from the `assistant/tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` request property `oneOf` list
  - added `Speechmatics` discriminator mapping keys to the `transcription_config/transcription_engine_config` request property
  - added the new `Speechmatics` enum value to the request property `transcription_config/transcription_engine`
  - added `#/components/schemas/TranscriptionEngineSpeechmaticsConfig` to the `transcription_config/transcription_engine_config` request property `oneOf` list
  - added `subschema #1: targets_list` to the `assistant/tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` request property `oneOf` list
- **2026-05-14** `a144ff96b4ac` — 1 breaking, 1 info
  - removed `subschema #1: targets_list` from the `assistant/tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` request property `oneOf` list
  - added `subschema #1` to the `assistant/tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` request property `oneOf` list
- **2026-05-08** `30cb1ddce91b` — 1 breaking, 16 info
  - removed `subschema #1, subschema #2` from the `to` request property `oneOf` list
  - added the new optional request property `assistant/external_llm/authentication_method`
  - added the new optional request property `assistant/external_llm/base_url`
  - added the new optional request property `assistant/external_llm/certificate_ref`
  - added the new optional request property `assistant/external_llm/forward_metadata`
  - added the new optional request property `assistant/external_llm/llm_api_key_ref`
  - added the new optional request property `assistant/external_llm/model`
  - added the new optional request property `assistant/external_llm/token_retrieval_url`
  - added the new optional request property `assistant/fallback_config/external_llm`
  - added the new optional request property `assistant/fallback_config/llm_api_key_ref`
  - added the new optional request property `assistant/fallback_config/model`
  - added `xAI, AssemblyAI` discriminator mapping keys to the `transcription_config/transcription_engine_config` request property
  - added the new `AssemblyAI` enum value to the request property `transcription_config/transcription_engine`
  - added the new `xAI` enum value to the request property `transcription_config/transcription_engine`
  - request property `assistant/tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` list-of-types was widened by adding types `string` to media type `application/json`
  - added `#/components/schemas/TranscriptionEngineXaiConfig, #/components/schemas/TranscriptionEngineAssemblyaiConfig` to the `transcription_config/transcription_engine_config` request property `oneOf` list
  - added `subschema #1, subschema #2` to the `to` request property `oneOf` list

---

[Operation](https://skmtc.dev/team-telnyx/apis/telnyx-api/docs/calls/post.md) · [API](https://skmtc.dev/team-telnyx/apis/telnyx-api.md) · [Page](https://skmtc.dev/team-telnyx/apis/telnyx-api/changes/calls/post)