Allows users tracking the condition of the other telephone or the subscriber, for example, there will appear a signal on the screen of the telephone device informing that the subscriber is on the line and is temporarily unavailable.
Guangzhou Gaoke Communications Technology Co.,Ltd
Established in 1993, Gaoke Communications is a leading manufacturer in telecom industry. Gaoke aims at“The First Mile Access Expert”and is dedicated to develop VoIP products over 10 years, including Enterprise Gateway, Residential Gateway, Media Gatew
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