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!!! Overview
[{$pagename}] ([SS7]) is a set of [Telecommunications] signaling [protocols] developed in [1975|Year 1975], which is used to set up and tear down most of the world's [Public Switched Telephone Network] ([PSTN]) telephone calls.
[{$pagename}] is part of the [common-channel signaling] (CCS)
[{$pagename}] also performs number translation, [Local number portability|Phone Number Portability], prepaid billing, [Short Message Service] ([SMS]), and other mass market services.
[Common Channel Signalling System 7] ([CCSS7]) is how [{$pagename}] is referred to in the [United States] and In the [United Kingdom], it is called C7 ([CCITT] number 7),
!! What does [{$pagename}] do?
[{$pagename}] is a set of [protocols] allowing phone networks to exchange the information needed for routing [data] between each other and to ensure correct billing.
[{$pagename}] also allows users on one network to roam on another, such as when travelling in a foreign country.
!! [{$pagename}] [Vulnerability]
[Edward Snowden]’s [2013|Year 2013] document dump revealed that the [National Security Agency] was using [{$pagename}] for [Surveillance] on [individuals].
There have been several [SS7 hacks].
!! More Information
There might be more information for this subject on one of the following:
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