HT-B200S USB telephone use the latest DSP special chip to make, it is widely applied in internet network environment which fit for skype protocol, such as MSN, Mediaring etc to voice communicate; for example LAN, city area network, telecom operate department, international internet entry user etc. the most feature of USB telephone is to transmit voice information at the data communicate network,P2P talk charge free, ensure good voice quality at the same time.

To use HT-B200S USB phone free instead of international & civil long-distance call which could reduce call cost greatly , the function & feature, main technology index and supported protocol is following：