GTI has been serving the Carolinas for 25 years and is an authorized North Carolina (Charlotte based) and South Carolina Avaya business partner.  GTI specializes in Avaya IP Office (IP500), Partner ACS, VoIP, and legacy systems such as Merlin Magix/Merlin Legend. We have also been servicing Nortel phone systems such as MICS and CICS for 20 plus years. GTI is an Authorized Adtran & Cisco Partner for Data Equipment specializing in routers, switches, firewalls, wireless access points and peripheral equipment. Quality Voice over IP (VoIP) has been a priority and specialty for GTI for over a decade with our Business Partners and Customers.