"This article explains some of the
common conventions used in defining Caller ID
signal levels. As different standards use different systems
of units..."
"When setting up Caller ID signal levels for various international standards, it is very important to understand what, if any, terminating impedance is specified..."
"The Telecommunications Industry Association, TIA, is a forum for manufactures, service providers, suppliers, and end-users to develop standards that guide..."
"In
1999, Chunghwa Telecom, the state owned telephone carrier in
Taiwan, had officially launched Caller ID service in Taiwan. By
offering Caller ID service as..."
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