Gsma Fs.38 'link' < INSTANT · TIPS >

The document categorizes SIP-related risks into three primary domains:

As the telecommunications industry transitions from legacy signaling protocols (like SS7) toward IP-based systems, SIP has become the backbone for voice and multimedia services, including and 5G Voice . FS.38 addresses the unique vulnerabilities introduced by this shift, offering a comprehensive guide to identifying and mitigating SIP-based threats. Key Focus Areas gsma fs.38

It describes specific technical controls to mitigate identified risks, such as packet filtering and protocol validation. gsma fs.38