Is one of message forms via the Internet; you only have to press the icon or button on the site and the connection with the operator will follow immediately. This function is often used on the websites for a quick connection.
Hanoi Telecom is one of the earliest licensed VoIP providers in Vietnam and has best increased VoIP traffic. We have interconnections to all fixed and mobile network operators in Vietnam via a stable technical infrastructure. In addition, we build a flexi
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