“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.
Keen to stay in touch with business partners or clients from other countries? The first thing to do is to buy a virtual phone number from telgo. This way you will be able to expand your horizons and to boost your profits.