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AT&T Phone / Voice

Collaborate and communicate with AT&T’s powerful voice and phone services.

AT&T Business offers basic and advanced phone services that fit your business needs:

AT&T Phone for Business

A hosted VoIP service that uses your existing phone lines and runs over the AT&T Business Internet network.

AT&T Phone for Business Advanced

A convenient service that replaced your entire traditional phone system with a multi-featured cloud solution.

AT&T SIP Trunking

Merges voice and data into a single integrated circuit. It uses your existing PBX hardware and supports local and international calling.

AT&T Cloud Voice for Microsoft Teams

This specialty solution works with your Microsoft Teams application and provides business-grade voice calling. Improve the reliability and overall performance of Teams with AT&T’s cloud-based voice service.

AT&T Office@Hand

A hosted, multi-featured, powerful voice and collaboration solution that includes eFax, and toll-free numbers, and it can also be customized to add essential features such as voice calling, video conferencing, and messaging.

AT&TIP Toll-Free

Make your business more accessible by letting customers reach out to you without incurring any call charges. This convenient VoIP service lets you offer a consistent customer experience that encourages direct interaction.


  • Speed and security you can count on!
  • 99%+ service reliability to keep your business up and running
  • 24/7 access to technical support engineer