“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.
BoipTel Nihon Tsushin System, Inc
BoipTel is a VoIP Service Provider that lets you use your Internet connection to make and receive phone calls using our VoIP network. We offer Pay-as-you-go Calling, Unlimited Monthly Plans, and Free in-network Internet Calling along with high quality Int
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