“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.
Greetings from ARTSCOM Limited. We are a VSP Licensed company authorized by BTRC(BANGLADESH TELECOM REGULATORY COMMISSION ). We are directly connected with IGW companies in Bangladesh .