SS7 Network

What is an SS7 network?

Signalling System 7 (SS7) is the way most of the world’s mobile networks communicate with each other. It’s a set of telephony protocols enabling the transmission of voice, data, control and session management information, and of course, SMS.  

Want more technical specs? Keep reading! 

The SS7 protocol has layers based on the OSI (Open Systems Interchange) model. The MAP (Mobile Application Part) layer provides the functionality required for SMS transmission. The SMSC, HLR, VLR, and MSC communicate together over the SS7 network using MAP commands. 


How does Sinch work with SS7? 

Sinch’s Signaling Firewall is an innovative operator solution that helps MNOs protect their network and subscribers from hijacks and fraud. Our experts can also conduct SS7 vulnerability assessments and help you find the right anti-fraud and security products for your needs. 


What are the benefits of Sinch’s SS7 network protection solutions? 

We’ve got tons of experience working with operators and signaling security - and our Signaling Firewall exceeds GSMA recommendations. In other words, you’re in good hands with Sinch! 

Want to find out more about SS7? Get in touch!

Illustration of a girl talking in a handset