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Signaling System 7 - SS7

Signaling System 7 - SS7 Book
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Wink Wink
(1-control signal) A telephone line signal that is a single supervisory pulse. When caused by the passive end of a subscriber loop, it is usually transmitted as an off-hook signal followed by an on-hook signal where the off-hook signal is of a very short specified duration compared to the on-hook signal. When caused by the powered end of a subscriber loop, it is usually transmitted as a short removal of central office battery voltage from the loop wires. When used with robbed bit or associated bit signaling on a digital multiplexed channel, the robbed bit or associated bit changes binary value for a short time interval. The duration of any form of a wink signal is typically 200 milliseconds. (2-indicator light) A rapid flashing cadence of an indicator light, typically used to indicate which line is ringing with an incoming call on a multi-line telephone set. Winking cadence is typically 5 winks per second, faster than flashing cadence.
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Signaling System 7 - SS7 Book
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Signaling System 7 - SS7
This book explains the operation of the Signaling System 7, and how it controls and interacts with public telephone networks and VoIP systems. SS7 is the standard communication system that is used to control public telephone networks. In addition to voice control, SS7 technology now offers advanced intelligent network features.

$34.99 Printed, $29.99 eBook
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