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Keylink IT Knowledge Base

Step-by-step guides for the phones, apps and systems we support — 3CX, Microsoft 365, Outlook, security cameras and more.

Phones

3CX PWA Guide

How to install the 3CX web client as a Progressive Web App (PWA) with the Chrome extension, then make calls, manage status, voicemail and call history.

7 min read
Microsoft 365

Updating to Windows 11

How to check whether your PC can run Windows 11 and install the upgrade safely, step by step.

4 min read
Phones

3CX V20 Admin Guide

An administrator guide for 3CX V20: managing users and extensions, reviewing call logs and setting office and holiday hours.

3 min read
Phones

3CX Quick Start Guide

Get up and running with your new 3CX phone system: logging in, setting up voicemail greetings, making calls and managing your status.

7 min read
Phones

3CX User Guide Videos

Short video walkthroughs covering 3CX setup, the 3CX mobile app and in-call features such as hold, transfer and conferencing.

1 min read
Phones

How to Use Yealink T29G Phone

A quick reference for the Yealink T29G desk phone: what each key does and how to handle everyday calling tasks.

4 min read
Phones

How to Use 3CX Soft Phone

A complete guide to the 3CX softphone: logging in, installing the web client and Windows app, making and transferring calls, voicemail, status, chat and video meetings.

12 min read
Phones

How to Use Yealink Handset Phones

A guide to Yealink desk phones: key layout, placing and transferring calls, conference calls, voicemail and common settings.

7 min read
Microsoft 365

How to Create Auto-Response for Outlook M365

Step-by-step instructions for setting up an automatic reply (out-of-office message) in Outlook for Microsoft 365, including how to schedule it and turn it off.

2 min read
Networking

Synology VPN User Guide

How to install and connect to your company network with Synology VPN Plus so you can reach office files and systems securely from anywhere.

2 min read
Phones

How to Use Fanvil Handset Phones

A guide to using Fanvil desk phones: what each key does, how to make, transfer and hold calls, and how to use voicemail and the phone menu.

3 min read
Microsoft 365

How to Use SharePoint on Desktop

An introduction to using SharePoint on the desktop: finding your sites, working with document libraries and syncing files to your computer.

2 min read

Still stuck?

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