SS7 and Diameter Signaling

Deployed for the past 35 years, SS7 provides signaling that enables mobile and fixed network operators to setup/teardown calls, to route text (SMS) messages, support inter-network connectivity and transparent roaming, and to provide per-session information such as caller ID. Today SS7 is a critical part of the global telecommunications infrastructure. Because SS7 networks were originally designed to work within an operator’s trusted domain or to interwork between trusted operators, security was not a top design consideration nor were potential SS7 vulnerabilities adequately addressed. 

Ribbon has partnered with Cellusys to provide a multi-layer security solution that leverages existing STP gateway screening capabilities and incrementally adds Signaling Firewall capabilities needed for context-sensitive assessment on SS7 messages.

Features & Benefits of SS7 Signaling

  • By combining Ribbon’s Signaling Transfer Points (STP) and Cellusys’ Signaling Firewall, operators can provide network protection for subscribers from illegal tracking, call intercept, fraud and Denial of Service (DoS) attacks.
  • The Ribbon-Cellusys solution supports SS7 and Diameter protocols, providing network operators with investment protection during the lengthy migration to Diameter.
  • Diameter signaling is the lynchpin for successful 4G/LTE interconnection and roaming. Mobile operators must have the utmost confidence in their deployment decisions for DEA functionality in order to absolutely know their Diameter message exchange is secure at both the transport and application level


Dummies Guide

Diameter Signaling for Dummies


DSC and SS7 Signaling Solutions

Solution Brief

Addressing SS7 Security Exposures


Secure SS7 & Diameter Solutions

White Paper

Controlling the Diameter Edge Ensures Network Viability

White Paper

DRA or DSC (Diameter Network Elements)

White Paper

SS7 Evolution: Virtualization and SS7 Signaling Transfer Points

White Paper

Using the Cloud to Transform SS7

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