AT&T Phone for Business – Advanced

Convert your analog phone and specialty data lines, including voice, fax, point-of-sale terminals, and more, to the cloud.

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What is AT&T Phone for Business - Advanced?

AT&T Phone for Business – Advanced is a cloud-based solution that converts traditional analog landline signals to Internet Protocol (IP), delivering Voice over IP (VoIP) internet connections.  The solution supports basic voice and specialty data lines such as fax, alarm lines, elevators, point-of-sale terminals, and more. Instead of having multiple dedicated lines that are connected to a traditional telephone network, your analog voice and specialty data lines are connected into a device, which converts the analog signal to a digital one.

Learn how AT&T Phones for Business – Advanced can convert your analog phone and specialty data lines to the cloud.

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Enjoy these business benefits

A cloud-based replacement for Plain Old Telephone Service (POTS)

  • Utilize your existing investment

    Bring your analog equipment to the cloud and connect in a highly secure environment

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  • Scale easily

    Add lines and equipment as your business needs grow

  • Reduce costs

    Consolidate from many to one service provider to help reduce expenses and simplify management.

  • Work more productively

    Eliminate downtime associated with hard-to-service POTS lines

  • Get peace of mind

    Stay up and running with a 24-hour internal battery and access to a wireless network

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  • Installs easily

    Get started quickly with professional installation

Consolidate your analog voice and specialty lines

Explore features for Phone for Business - Advanced

Features Details
Supports specialty data lines Connects security and fire alarms, elevators, emergency boxes, faxes
Wireless capable Automatic LTE Failover, dual sim slots
Internal battery 24-hour battery backup
Long distance calling Unlimited domestic local/long distance calling including calls to Canada and Puerto Rico
Phone features Basic calling features including auto attendant, voicemail, music on hold, Fixed Call Forwarding with calling hours, and more 


  • Hosted voice using your analog equipment and an internet connection
  • Equipment with 24-hour battery with optional LTE failover
  • Professional installation
  • 24x7x365 monitoring

You can choose to purchase the Phone for Business – Advanced device with a 1-year warranty or have AT&T own the equipment as part of the service.  

AT&T Phone for Business – Advanced uses your existing public internet connectivity, either wireless or wireline. You are not required to use AT&T internet.

AT&T Phone for Business – Advanced meets or exceeds the Managed Facility Voice Network (MFVN) definitions and uses highly secure TLS encryption. There is peace of mind with remote monitoring of connections, hardware, performance, and service continuity with up to 24 hours internal standby battery for use during local power outages. Optional LTE back up with automatic failover is also available.  The device is listed as UL 60950-1 and designated for use as telecommunication terminal equipment and telecommunication network with a specific reference to fire detection systems approved for use with the standard. It conforms to ANSI and UL60950-1 and UL 
.62368-1. Phone for Business -
Advanced complies with the standard of NFPA 72.  

Yes, you can use your existing analog phones, which will connect into the AT&T Phone for Business – Advanced device.

The service is available in all 50 states.


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