---
title: "CT Cloud Voice Yealink - Factory Reset Phones"
slug: "ct-cloud-voice-yealink-factory-reset-phones"
tags: ["calltower", "public"]
updated: 2026-09-18T16:27:52Z
published: 2026-09-18T16:27:52Z
canonical: "learn.calltower.com/ct-cloud-voice-yealink-factory-reset-phones"
---

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

# CT Cloud Voice Yealink - Factory Reset Phones

For Older Models (T48S, Etc.)

1. Hold down the OK button for about 7 to 10 seconds.
2. It will ask you if you want to reset.
3. Hit Yes.

For Newer Models (MP56, TP58, Etc.)

Long press the pound key (#) and the star key ( * ) for about 6 seconds when the phone is idle.