International Call Blocking
This function blocks all telephone calls going out of the country, thus, insuring in a case of undesirable international calls.
General tips on implementation of VoIP phones for home and VoIP communications as a main method.
C. F. Tec. Co., Ltd
C.F. Tec provides provides VoIP Hardware Solutions for SME''s. More info at www.voip-thailand.com
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