Sinos Technology (HK) Co., Hong Kong
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.
General office
Sinos Technology (HK) Co.,
139-141, Wai Street,.
Kwun Tong
Kowloon ,1001
Hong Kong
Phone: +852 23897726
Sinos Technology (HK) Co.,
139-141, Wai Street,.
Kwun Tong
Kowloon ,1001
Hong Kong
Phone: +852 23897726
- International VoIP Wholesale Provider
- Call Routing VoIP Solutions
- Cisco Systems
- Java Based own system
Some telephones, depending on the brand and model, have the intercom function, which allows to begin communication by sending the signal. When the signal comes, the telephone set rings a signal different from the standard ring tone call. After that the telephone temporarily switches off from the telephone line and works as an intercom.
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