---
title: "Changes to Dial a new conference participant"
method: POST
path: "/texml/Accounts/{account_sid}/Conferences/{conference_sid}/Participants"
---

# Changes to Dial a new conference participant

`POST /texml/Accounts/{account_sid}/Conferences/{conference_sid}/Participants`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 89 revisions.

- **2026-10-15** `a72569d69430`: 8 info

## Changes

- **2026-10-15** `a72569d69430`: 8 info
  - added the new optional request property `MachineDetectionBeepMaxFrequency`
  - added the new optional request property `MachineDetectionBeepMinFrequency`
  - added the new optional request property `MachineDetectionBeepMinToneDuration`
  - added the new optional request property `MachineDetectionBeepProfile`
  - added the new optional request property `MachineDetectionBeepSpectralConfirmation`
  - added the new optional request property `MachineDetectionBeepSpectralMinPurity`
  - added the new optional request property `MachineDetectionBeepSpectralRejectFaxCng`
  - added the new optional request property `MachineDetectionBeepSpectralWindow`

---

[Operation](https://skmtc.dev/team-telnyx/apis/telnyx-api/docs/texml/Accounts/:account_sid/Conferences/:conference_sid/Participants/post.md) - [API](https://skmtc.dev/team-telnyx/apis/telnyx-api.md) - [Page](https://skmtc.dev/team-telnyx/apis/telnyx-api/changes/texml/Accounts/:account_sid/Conferences/:conference_sid/Participants/post)