P-CSCF Discovery (Proxy-CSCF Discovery)

P-CSCF Discovery in context

The radio access network is where mobile devices attach to the operator's infrastructure. Attacks in this layer include IMSI catching, rogue base stations and downgrade attacks; defenses rest on mutual authentication, integrity-protected signaling and Open RAN supply-chain hygiene.

Signaling protocols carry the control-plane messages that set up calls, register subscribers and route SMS. SS7, Diameter, GTP-C and SIP are the four dominant families, and interconnect exposure of any of them is treated by GSMA as top-tier telecom risk.

To place P-CSCF Discovery in the wider telecom-security picture, review Lawful Interception Abuse Risk, Lawful Interception Architecture, Revenue Assurance, Telecom Penetration Testing, Chain of Custody and O-RAN Interfaces (A1, E2, O1, O2) — each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

• Lawful Interception Abuse Risk
• Lawful Interception Architecture
• Revenue Assurance
• Telecom Penetration Testing
• Chain of Custody
• O-RAN Interfaces (A1, E2, O1, O2)
• Bidding-Down Attack
• Lawful Intercept

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