SS7 Insights | Sumble

What is SS7?

SS7 (Signaling System No. 7) is a signaling protocol used in telecommunications to set up and tear down phone calls, manage mobile services like SMS, and provide other network services. It is a set of signaling protocols which allows phone networks to exchange information. Although critical for basic telecom operations, SS7's vulnerabilities have been exploited for surveillance and fraud.

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What other technologies are related to SS7?

SS7 Competitor Technologies

Diameter

Diameter is an authentication, authorization, and accounting (AAA) protocol that can replace RADIUS and is used in IP Multimedia Subsystem (IMS) and evolved packet core (EPC) networks, competing with SS7-based signaling.

mentioned alongside SS7 in 36% (1.2k) of relevant job posts

SIP

SIP is a signaling protocol used for voice and video calls over IP networks. It is a direct competitor to SS7, especially in modern VoIP networks.

mentioned alongside SS7 in 5% (1.4k) of relevant job posts

VoLTE

VoLTE (Voice over LTE) uses IP Multimedia Subsystem (IMS) and SIP for voice calls, representing a move away from traditional circuit-switched networks that rely on SS7.

mentioned alongside SS7 in 8% (315) of relevant job posts

SS7 Complementary Technologies

SIGTRAN

SIGTRAN is a suite of protocols used to transport SS7 signaling messages over IP networks, providing a transport mechanism for SS7. It is a complement.

mentioned alongside SS7 in 71% (602) of relevant job posts

ISUP

ISUP is the ISDN User Part, a protocol used within SS7 networks to manage call setup and teardown for circuit-switched calls. It is part of SS7.

mentioned alongside SS7 in 58% (370) of relevant job posts

TCAP

TCAP is the Transaction Capabilities Application Part, a protocol used within SS7 to support transaction-based applications like SMS and prepaid billing. It is part of the SS7 protocol suite.

mentioned alongside SS7 in 81% (221) of relevant job posts