“Extension” - is the extension of the telephone line (PBX) or the Centrex system. It works as an association and allows calling to certain telephone sets without the necessity of dialing the telephone number, but only by dialing a short combination of digits, reaching the desired subscriber.
GSI was funded in 2003, to meet the growing demand of corporative telecom services between the world and Dominican Republic, provides dedicated origination and termination,as intermediaries in ALL areas in the Dominican Republic and USA, with more areas b
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