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.
KeyWest Communicaitons
KeyWest Communications Inc, is a private company incorporated under the laws of the British Virgin Islands with wholly owned subsidiaries in the United States, Canada, Malaysia, Hong Kong and affiliates in South Korea.With offices in the United States, Ca
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