U.S. Patent 1,424,065: "Signaling System"

The use of robbed-bit signaling in North America has decreased significantly as a result of Signaling System No 7 (SS7) on inter-office dial trunks.

He has spent billions of dollars on digital switches and other technology like Signaling System No. 7, which makes possible caller-identification and dozens of other phone services.

That was made possible by new computer programs like Signaling System No. 7.

These digital lines make possible the use of what is known as Signaling System No. 7.

Known as Signaling System No. 7, or SS7, the protocol makes possible the widespread use of services like caller identification and voice mail.

There are two types of mobile messaging operators, aggregators and SS7 (Signaling System 7) providers.

Crucial components of Signaling System 7 are computers known as signal transfer points, which control the path that the growing variety of telephone transmissions take through the labyrinthine phone network.

By the end of this year 50 percent of the long-distance calls handled by the regional phone companies will be controlled by Signaling System 7 computers.

In civilian and many military use, this channel will carry messages in Signaling System 7 protocols.