The Avaya Partner ACS Telephone System was one of the best selling system ever made. With over one million small businesses using the system over the past 15 years, it has proven to be a very reliable and affordable solution. Although it has been recently replaced by the Avaya IP Office, Communications Solutions continues to support the system and provide parts, programming and support for years to come. Need to upgrade your current Partner System? There is a simple migration that allows you to reuse your current Partner telephones with the newest Avaya IP Office system. Give us a call for more details.