Provide wholesale international callback service in China for voip service providers and call shops. We offer competitive price and billing system to our wholeseller. We are using SS7 PSTN line and no connection fee to customers.
DBL Technology Ltd. is a leading company in developing and manufacturing advanced voice over IP (VoIP) solutions for the worldwide market. We are dedicated in the development of the latest VoIP technologies, and more than 10 years in developing a wide ra
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