“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.
Amanees VOIP provider
Amanees is a new generation telecom operator using the latest technologies based on the World Wide Web Voice over internet protocol.
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