Sinoco Information Technology Co.,ltd. is a high-tech enterprise committing itself to the manufacture of the VOIP terminal units
Sinoco Information Technology Co.,ltd. is a high-tech enterprise committing itself to the manufacture of the VOIP terminal units
SIP is the latest technology allowing voice call to be made over the internet. VoiceFlex uses SIP to provide low cost, ISDN replacement lines that provides the best possible call quality, inexpensively, sometimes at no cost, with the flexibility that come
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