If your organization is in need of reliable phone systems from industry leader Avaya, you can rely on Mesquite Business Phone Systems. We are proud to offer sales and support for all Avaya partner systems. Our staff includes certified technicians with extensive experience and the knowledge to provide prompt, professional service for existing systems. Whether you’re looking for a replacement handset or an entirely new phone system, we have the solutions you need on hand. Contact us today to learn more about our services and get an expert’s help in finding the right Avaya IP Office 500 or Avaya Definity system for your business.