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Click to call 704.395.0045 BUSINESS PHONE SYSTEMS & HOSTED VOICE DATA CABLING LOCAL PERSONALIZED SERVICE ONSITE HOSTED VOICE & COLO SERVICES 1 2 3 4 Phone Systems & Applications 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… Read more Cabling: Voice/Data/Paging Category 6 (Cat 6) & 5e cabling systems have been a core business for GTI fo