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.
Denphone K.K. is Japan's leading provider of open PC based VOIP Telephone PBX systems. Our PBX and telephony solutions are based on the Asterisk open source telephony architecture, and provide advanced features such as voicemail and conferencing as standa
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