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Signalling System No. 7

Signalling System No. 7 (SS7) is a set of telephony signaling protocols developed in the 1970s that is used to setup and teardown telephone calls on most parts of the global public switched telephone network (PSTN). The protocol also performs number translation, local number portability, prepaid billing, Short Message Service (SMS), and other services.

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Committee
Study Group XI, WTSC
Domain
telephony
Latest version
(03/93) March 1993
Organization
ITU-T
Related standards
Q.701, Q.711
Status
In force

Topics to explore

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Overview

History

Functionality

Physical network

SS7 protocol suite

Protocol security vulnerabilities

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Map overview Semantic statistics

Signalling System No. 7

Nodes109
Edges108
Triples18
Avg. degree1.98
Density0.018349
Components1

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Signalling System No. 7

Top relations

Committee · 1
Signalling System No. 7 → Study Group XI, WTSC
Domain · 1
Signalling System No. 7 → telephony
Latest version · 1
Signalling System No. 7 → (03/93) March 1993
Organization · 1
Signalling System No. 7 → ITU-T
Related standards · 1
Signalling System No. 7 → Q.701, Q.711
Status · 1
Signalling System No. 7 → In force
Website · 1
Signalling System No. 7 → https://www.itu.int/rec/T-REC-Q.700
Year started · 1
Signalling System No. 7 → 1984

Important terminology Word statistics

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Important terminology

signaling ss7 network protocol telephone system used call part channel links also protocols information mobile calls service services control called

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Signalling System No. 7CommitteeStudy Group XI, WTSC1.00infobox
Signalling System No. 7Domaintelephony1.00infobox
Signalling System No. 7Latest version(03/93) March 19931.00infobox
Signalling System No. 7OrganizationITU-T1.00infobox
Signalling System No. 7Related standardsQ.701, Q.7111.00infobox
Signalling System No. 7StatusIn force1.00infobox
Signalling System No. 7Websitehttps://www.itu.int/rec/T-REC-Q.7001.00infobox
Signalling System No. 7Year started19841.00infobox
the blue boxinstance ofthey can be exploited with devices0.80text
which can replicate the tones used by the network for call controlinstance ofthey can be exploited with devices0.80text
routinginstance ofthey can be exploited with devices0.80text
service subscriptioninstance ofNFAS is signaling that is not directly associated with the path that a conversation will traverse and may concern other information located at a centralized database0.80text

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