AT&T Office@Hand

Learn how to use features from AT&T Office@Hand. Access our self-help options to set up and use this application to communicate with customers.

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Office@Hand: System Requirements  
Article #8260

What are the minimum system requirements for the following Office@Hand services: Online Account, Mobile App, Desktop App, Meetings, Digital Line, and Fax?

The following are the minimum system requirements for your AT&T Office@Hand service.

  • Router with internet connection
  • IP Phone
  • Online Account
  • Mobile App
  • Desktop App
  • Softphone
  • Digital Line
  • Fax

Online Account

Supported Browsers

  • Google Chrome: Chrome 83.0
  • Microsoft IE version 11 or higher
  • MS Edge 18
  • Mozilla Firefox version 77 or higher
  • Safari version 13.x.x

Supported Operating Systems

  • Windows 10
  • Windows 8 (32 and 64-bit)
  • Windows 7 (32 and 64-bit)
  • Mac OS X with Mac OS 10.4.3/(Lion) or later

Office@Hand Mobile App

  • iOS: iOS 8.0 or later (iOS 11, iPhone X supported)
  • Android: Android OS 4.4 and up (Android O supported) 

Note: For Android M or later, you will need to turn on required App Permissions:

  • Contacts (view local contacts)
  • Phone (RingOut)
  • Microphone (VoIP call)
  • Storage (store fax/voicemail/documents/photo)

IMPORTANT: BlackBerry devices running on Blackberry OS will not be able to download and install the AT&T Office@Hand Mobile App.

Office@Hand for Desktop App


  • Windows 7 and 8
  • 1 GHz (32-bit) or 2 GHz (64-bit) processor
  • Minimum of 512 MB of memory
  • 200 MB of hard drive space


  • Mac OS X 10.7 Lion or above
  • Intel processor
  • Minimum of 512 MB of memory
  • 100 MB of hard drive space

Meetings App

Meetings for Desktop

  • Internet Connection: 600kbps or higher
  • Peripherals: Webcam, speakers, microphone
  • Windows: Windows 7 or later version
  • Mac: Mac OS X with MacOS 10.7 (Snow Lion) or later version

Meetings for Mobile

  • Android: Android version 4.4 and up
  • iOS: iOS 8.0 or later

Digital Line

  • High-speed Cable, DSL or Fiber Optic Internet service
  • 90Kbps per digital line for Non-Polycom devices
  • 128Kbps bandwidth per digital line for Polycom devices


For E-mail to Fax/FaxOut:

  • Active email account

Faxing with a traditional fax machine:

  • High-speed Cable, DSL or Fiber Optic Internet service
  • ATA & Digital Line
  • Fax Machine

Note:  This information may change without prior notice from AT&T Office@Hand.

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