---
title: "December 22 - 26, 2025"
slug: "december-22-26-2025"
updated: 2026-01-30T11:57:00Z
published: 2026-01-30T11:57:00Z
canonical: "docs.voiso.com/december-22-26-2025"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.voiso.com/llms.txt
> Use this file to discover all available pages before exploring further.

# December 22 - 26, 2025

## New in this release

Refer to the latest [documentation changelog](/v1/docs/changelog) for additional information.

### Flow Builder

#### Text-to-speech preview

The [Play Audio](/v1/docs/flow-builder-play-audio) and [Collect digits](/v1/docs/collect-digits) nodes now include a built-in [text-to-speech](/v1/docs/tts-overview) (TTS) preview. This enhancement allows you to listen to your TTS messages directly from the configuration panel or by hovering over the node in the flow editor, making it easier to fine-tune automated audio prompts.

### Dialer campaigns

#### Post Call Rating for Dialer calls

The [Post Call Rating](/v1/docs/use-case-post-call-rating) feature is now supported for Dialer campaign calls. You can enable this feature during campaign setup on the [Add campaign](/v1/docs/outbound-dialer-adding-a-new-campaign) page or by specifying the `survey_enabled` parameter when creating or updating campaigns via the API.

Related API documentation:

- [Create campaign description](https://developers.voiso.com/reference/create-campaign-description)
- [List campaigns description](https://developers.voiso.com/reference/list-campaigns-overview)
- [Get campaign description](https://developers.voiso.com/reference/get-campaign-description)
- [Update campaign description](https://developers.voiso.com/reference/update-campaign-description)

#### Virtual agent lead metadata delivery

The Campaigns Contacts API now supports a `contextHeader` parameter in the **POST** and **PUT** methods. This parameter allows you to pass lead metadata, such as lead ID or source, to [Virtual agents](/v1/docs/virtual-agents) via SIP headers, enabling bots to use contextually relevant information during campaign calls.

Related API documentation:

- [Add campaign contacts description](https://developers.voiso.com/reference/add-contacts-overview)
- [Update campaign contacts description](https://developers.voiso.com/reference/update-contacts-overview)

### Do Not Call Registry

#### Integration with Etisalat Safecall

A new integration with the **Etisalat Safecall** service is now available to support [UAE DNCR](/v1/docs/do-not-call-registry) compliance. When this feature is enabled, outbound calls to UAE numbers (+971) are automatically checked in real time against the Etisalat DNCR. Calls to registered numbers are blocked, and all calls are blocked by default if the DNCR verification service is unavailable. Admins receive on-screen alerts when service interruptions occur.