How to Use the Web Portal or Mobile App for Calls

  1. 3CX Web Client & Mobile App 
    • Windows Desktop App can be found via Web Client > Apps > Windows App
    • Mobile Apps: Available on Google Play and App Store. Search for 3CX app. 
    • Login & Setup: 
      • Open your browser and navigate to your organization’s 3CX web address. 
      • Log in using extension credentials from your welcome email. 
      • From Web Client → Apps → click the Windows App icon to download and run the installer. 
      • Install the config file if applicable; your extension is auto-provisioned.
  2. GrandStream Wave – Desktop & Mobile app: Download, Login, and Call Setup
    • Install Wave and open the application from https://fw.gdms.cloud/wave/download/
    • On the login screen, enter: 
      • Server address (your UCM PBX address) 
      • Extension number 
      • User portal password 
      • Optionally select “Log in automatically” for future auto login. 
      • Use the Forgot Password flow to reset via email if needed

  3. Teams Calling 
    • Install Microsoft Teams from download site from https://www.microsoft.com/en-us/microsoft-teams/download-app or scan the QR code for the Teams mobile app. 
    • Launch the Teams app 
      • Sign in with work account 
      • Grant necessary permissions (camera, microphone, notifications) on first launch. 
      • Use the Calls tab to dial voice/video calls, internal or external.
      • You can also initiate calls from chats or contact cards using the call icons.

    4. Webex Calling 

    • Install mobile or desktop Webex app from https://www.webex.com/downloads.html 
    • Launch and SignIn using your Webex Calling credentials (provided by admin or service provider). 
    • Follow guided prompts; grant required permissions (mic, camera, etc.). 
    • Use search bar or contact list to call via Audio / Video icons. 

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Updated on: 08/06/2025 by Jerrod M