“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.
Established in year 2000, C3Call Telecom Group hold licenses in Singapore, S Korea, Vietnam and Cambodia to provide telecommunications services to its partners. Today, we are interconnected to more than 100 telco partners worldwide.