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.
Vcentrix, Inc.
Founded in early 2002 vCentrix provides a full suite of back office services, hardware, services and calling products for wholesale carriers, CLECs, MSO and ISPs to easily and quickly become VoIP service providers. vCentrix offers a world class VoIP netwo
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