Business Phone Systems


If you are looking for a new or replacement phone system for your business or home office, GBT is your one-stop shop. We specialize in ESI brand business systems but we can get almost any brand if necessary. ESI systems include all the latest advancements and we design them according to your specifications. We have a number of technicians trained in programming and repair, plus we keep a complete selection of parts on the shelf to give you rapid service in case it is needed.

We are happy to prepare a no-obligation bid for your next system. For  more information or to schedule your consultation today call 1-800-372-4236.

ESI Certified reseller
ESI Phones
ESI Phones

Contact Business Technology Services

Fill out my online form.