The service allows you finding out who has called you, when the telephone line was busy, switched off or was outside the zone of coverage. By doing so, it ensures that an important call will not be missed.
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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