Business Phone Systems
Business Phone Systems
Choose a phone system that fits your budget and the way your team works. From a single line to multiple offices, find the features you need to manage calls, support remote and mobile workers, and grow with your business.
For over 26 years, Tandem Data has helped businesses assess their needs, choose a phone system, and keep it working. We handle consultation, installation, and ongoing support. Not sure where to start? We'll help you work through the options.
Find the Right Phone System
Hosted VoIP Phone Systems
Business calling through a hosted service, with no on-site phone server to manage.
On-Premises Phone Systems
Keep your phone system on-site with Avaya IP Office, our primary on-premises platform.
Support for Older Phone Systems
Keep your existing Avaya or Nortel system working with support from Tandem Data.
Talk Through Your Options
Tell a Dallas-based engineer what your team needs. We’ll help you choose a phone system that fits.