SS7 Solution

SS7 (Signaling System 7) is an international telecommunication protocol standard that defines how the network elements in public switched telephone network (PSTN) exchange information and control signals. Nodes in an SS7 networks are called signaling points.

SS7 software represents a set of protocols allowing phone networks to exchange the information needed for passing calls and text messages between each other and to ensure correct billing. SS7 protocol performs common mass-market solutions, including call waiting, short message service (SMS), prepaid billing, number translation, call forwarding, local number portability, and conference calling, and other services. It also allows users on one network to roam on another, such as when traveling in a foreign country.

How Mobius SS7 is deployed in telecommunications?

The signaling transport (SIGTRAN) protocols provide interoperability of SS7 signaling to operate over IP-based networks. This enables PSTN service to operate over legacy, analog plain old telephone service systems and modern IP networking equipment. SIGTRAN uses its own Stream Control Transmission Protocol.

SS7 Protocols

Bullet list of protocols: M3UA, SCCP, TCAP, CAMEL, MAP, ISUP

SS7 FAQ

Why is SS7 classified as a common channel signaling protocol?

The additional data channel offered by the SS7 made many of today's telephony conveniences possible. This makes SS7 a form of common channel signaling that provides network intelligence, transmits a large amount of call and user related information, and allows calls to be set up and disconnected faster, saving time and money.

What is SS7 vs SIGTRAN difference?

When using the SS7 protocol, a special channel is used to send signaling information that is common to multiple calls. SIGTRAN (Signaling Transport Working Group) handles the same call control applications and features as SS7. However, SIGTRAN uses IP (Internet Protocol) and SCTP (flow control protocol) transport instead of TCP or UDP, mainly due to security concerns.

What is SS7 vs Diameter difference?

SS7 was designed to handle the call management and signaling requirements of digital networks based on full duplex channels. The Diameter protocol is based on the Remote User Authentication Service (RADIUS) protocol with a number of enhancements.

Diameter is widely used in recent versions of 3GPP for Authentication, Authorization, and Accounting (AAA) services, while SS7 was originally used with PSTN and GSM networks for digital signaling between different nodes. The Diameter protocol works on an IP network, while SS7 can be used on digital links, such as E1-based Time Division Multiplexing (TDM) networks.

Is an SS7 attack possible?

SS7 attacks are mobile cyber attacks that break into and intercept voice and SMS messages on cellular networks by exploiting security flaws in the SS7 protocol. SS7 attacks target mobile phones.

How to prevent SS7 attack?

In the operation of mobile networks, priority should be given to education and awareness. Customers can protect their phones with increased consumer focus on security controls that include: multi-factor authentication, event monitoring and analysis, ongoing updates.